explains why applying a force to a baseball with your arm can cause the baseball to accelerate from rest to the speed at which it leaves your hand.
When you apply a force to the baseball with your arm, it causes the baseball to accelerate.
What is accelerate?Accelerate is the process of increasing or speeding up the rate of speed or rate of change of something. It is a term used in various contexts and can refer to a variety of activities, from speeding up a car on a highway to boosting the growth rate of a company. In physics, acceleration is the rate of change of velocity over time, and is the second derivative of displacement with respect to time. Acceleration can be negative or positive, depending on whether the speed is decreasing or increasing. It is commonly measured in meters per second squared (m/s2).
This is because a force is a push or pull on an object that causes it to move or change speed or direction. The force you apply to the baseball causes it to accelerate from rest to the speed at which it leaves your hand. This is because when an unbalanced force is applied to an object, it causes the object to accelerate in the direction of the force. The greater the force you apply, the faster and farther the baseball will travel.
To learn more about accelerate
https://brainly.com/question/460763
#SPJ1
Io loses about a ton (1000 kilograms) of sulfur dioxide per second to Jupiter's magnetosphere.
a. At this rate, what fraction of its mass would Io lose in 4.5 billion years?
b. suppose sulfur dioxide currently makes up 1% of Io's mass. When will Io run out of this gas at the current loss rate?
Sulfur dioxide (SO2) is a chemical compound that is composed of one sulfur atom and two oxygen atoms. It is a colorless gas with a pungent odor, and is produced by both natural and anthropogenic sources.
Describe Sulphur Dioxide?
Natural sources of sulfur dioxide include volcanic eruptions, while anthropogenic sources include the burning of fossil fuels, such as coal and oil, and the smelting of ores containing sulfur. Sulfur dioxide is also used in the production of paper, wine, and other products.
a. To find the fraction of its mass that Io would lose in 4.5 billion years, we first need to find how much sulfur dioxide it would lose in that time.
One year has 31536000 seconds (60 seconds per minute × 60 minutes per hour × 24 hours per day × 365 days per year), so 4.5 billion years is:
4.5 billion years × 31536000 seconds per year = 1.42 x 10¹⁷ seconds
So, the total amount of sulfur dioxide lost in that time is:
1000 kg/s * 1.42 x 10¹⁷ s = 1.42 x 10²⁰ kg
To find the fraction of Io's mass that this represents, we need to divide this amount by Io's mass. According to NASA, Io's mass is about 8.9319 x 10²² kg.
Fraction of Io's mass lost = (1.42 x 10²⁰ kg) / (8.9319 x 10²² kg) = 0.00159
Therefore, Io would lose about 0.159% of its mass in 4.5 billion years at this rate.
b. If sulfur dioxide currently makes up 1% of Io's mass, we can use the same rate of loss to determine how long it would take for Io to run out of this gas.
Let's call the amount of sulfur dioxide currently on Io SD₀. Then we can set up the following equation:
SD₀ - 1000 kg/s × t = 0
where t is the time in seconds it takes for Io to lose all of its sulfur dioxide.
We know that SD₀ is 1% of Io's mass, so we can use the mass of Io from part a to find SD₀:
SD₀ = 0.01 × 8.9319 x 10²² kg = 8.9319 x 10²⁰ kg
Plugging this in, we get:
8.9319 x 10²⁰ kg - 1000 kg/s × t = 0
Solving for t, we get:
t = (8.9319 x 10²⁰ kg) / (1000 kg/s) = 8.9319 x 10¹⁷ seconds
Converting this to years, we get:
t = 8.9319 x 10¹⁷ s / 31536000 s per year = 2.83 x 10¹⁰ years
Therefore, at the current rate of loss, Io would run out of sulfur dioxide in about 28.3 billion years.
To know more about Sulfur dioxide visit:
https://brainly.com/question/7072447
#SPJ1
If a force of unknown magnitude acts on a 10 kg box resting on a frictionless horizontal surface and changes its speed to 40 m/s in 5 s, then the acceleration of the box will be
Answer:
The box has a magnitude of 80 N
Explanation:
The acceleration of the box can be calculated as follows:
a = (v_f - v_i) / t
where
v_f = 40 m/s (final velocity)
v_i = 0 m/s (initial velocity)
t = 5 s (time)
a = (40 - 0) / 5
a = 8 m/s^2
So, the acceleration of the box is 8 m/s^2. This acceleration can be caused by the force acting on the box, which can be found using the equation:
F = m * a
where
m = 10 kg (mass of the box)
F = 10 * 8
F = 80 N (Newton)
So, the force acting on the box has a magnitude of 80 N.
show answer no attempt 50% part (b) how much energy is lost to friction if the motorcycle only gains an altitude of 21 m before coming to rest?
From the information provided, the energy lost to friction if the motorcycle only gains an altitude of 21 m before coming to rest is approximately 65,954.64 J.
To calculate the energy lost to friction, we need to first determine the initial total mechanical energy of the motorcycle and the final total mechanical energy of the motorcycle after it has climbed to a height of 21 meters and come to rest. The difference between the initial and final energies will give us the energy lost to friction.
The initial total mechanical energy of the motorcycle is given by:
Ei = (1/2)mv² + mgh + 2(1/2)Iw²
where m is the mass of the motorcycle, v is its initial speed, h is the height it climbs, g is the acceleration due to gravity, I is the moment of inertia of the wheels, and w is their initial angular velocity.
We need to calculate the moment of inertia of each wheel:
I = (1/2)mr²
where m is the mass of the wheel and r is its radius. Substituting the given values, we get:
I = (1/2)(12 kg)(0.33 m)² = 0.6534 kg m²
The initial angular velocity of each wheel is not given, so we can assume that it is initially at rest (i.e., w = 0).
Substituting the given values into the equation for E, we get:
Ei = (1/2)(180 kg)(25 m/s)² + (180 kg)(9.81 m/s²)(36 m) + 2(1/2)(0.6534 kg m²)(0)²
= 101,812.44 J
The final total mechanical energy of the motorcycle is given by:
Ef = mgh
where m, g, and h are as before, and the speed and rotational energy of the wheels are both zero.
Substituting the given values, we get:
Ef = (180 kg)(9.81 m/s²)(21 m) = 35,857.8 J
The energy lost to friction is the difference between the initial and final energies:
Energy lost = Ei - Ef = 101,812.44 J - 35,857.8 J = 65,954.64 J
Question - Suppose a 180 kg motorcycle is heading toward a hill at aspeed of 25 m/s. The two wheels weigh 12 kg each and are each annular rings with an inner radius of 0.280 m and an outer radius of 0.330 m. Randomized Variables m 180 kg ˇ-25 m/s h 36 m. how much energy is lost to friction if the motorcycle only gains an altitude of 21 m before coming to rest?
Learn more about energy here: brainly.com/question/25959744
#SPJ4
a bolt is dropped from a bridge under construction, falling 90 m to the valley below the bridge. (a) in how much time does it pass through the last 20% of its fall? what is its speed (b) when it begins that last 20% of its fall and (c) when it reaches the valley beneath the bridge?
a) The bolt 1.38 seconds to fall through the last 20% of its fall.
b) The bolt begins the last 20% of its fall 3.06 seconds after it is dropped.
c) The speed of the bolt just before it hits the ground is 42.43 m/s.
(a) The time it takes for the bolt to fall through the last 20% of its fall can be calculated using the kinematic equation:
[tex]y = vi*t + (1/2)at^2[/tex]
where y is the distance fallen, vi is the initial velocity (which is 0), a is the acceleration due to gravity ([tex]-9.8 m/s^2[/tex]), and t is the time taken.
Let's call the total distance fallen by the bolt "d". Then, the distance fallen in the last 20% of the fall is 0.2d, and the distance fallen before that is [tex]0.8d[/tex]. So we can write:
[tex]0.2d = (1/2)at^2[/tex]
Solving for t, we get:
[tex]t = sqrt((0.2d)/(0.5*a))[/tex]
Plugging in the values, we get:
[tex]t = sqrt((0.290)/(0.5(-9.8))) = 1.38 seconds[/tex]
To find the speed of the bolt at the end of this 20% fall, we can use the kinematic equation:
[tex]v = vi + a*t[/tex]
where v is the final velocity, vi is the initial velocity (which is 0), a is the acceleration due to gravity ([tex]-9.8 m/s^2[/tex]), and t is the time taken.
Plugging in the values, we get:
[tex]v = 0 + (-9.8)*1.38 = -13.524 m/s[/tex]
The negative sign indicates that the velocity is downward.
(b) The time at which the bolt begins the last 20% of its fall can be found by multiplying the total time taken to fall by 0.8 (since the first 80% of the fall takes 80% of the total time):
[tex]t_start = 0.8sqrt((2d)/g) = 0.8sqrt((2*90)/9.8) = 3.06 seconds[/tex]
(c) The speed of the bolt just before it hits the ground can be found using the kinematic equation:
[tex]v^2 = vi^2 + 2ay[/tex]
where v is the final velocity, vi is the initial velocity (which is 0), a is the acceleration due to gravity [tex](-9.8 m/s^2)[/tex], and y is the distance fallen.
Plugging in the values, we get:
[tex]v = sqrt(0 + 2*(-9.8)*90) = 42.43 m/s[/tex]
for such more question on bridge
https://brainly.com/question/11301461
#SPJ4
an organ pipe is 95 cm long and open on both ends. what frequency note does the pipe produce? take the speed of sound to be 343 m/s
The organ pipe produces a note with a frequency of approximately 181 Hz.
f = (nv)/(2L)
where:
f = frequency
n = the harmonic number (the first harmonic is 1, the second is 2, etc.)
v = the speed of sound (343 m/s)
L = the length of the pipe (95 cm = 0.95 m)
Since the pipe is open on both ends, it can produce all the odd harmonics (1st, 3rd, 5th, etc.). We'll find the frequency of the first harmonic (n=1):
f = (1343)/(20.95)
f = 181.05 Hz
Frequency is a term used in physics to describe the number of waves, vibrations, or cycles that occur in a given amount of time. It is measured in Hertz (Hz), which represents the number of cycles per second. For example, if a wave oscillates up and down 50 times in one second, its frequency is 50 Hz.
Frequency is a fundamental concept in many areas of physics, including sound, light, and radio waves. It is an important factor in determining the pitch of a sound, as well as the color of light.
In addition, frequency is closely related to the wavelength of a wave, which is the distance between two consecutive points of a wave with the same phase. The relationship between frequency and wavelength is given by the equation c = fλ, where c is the speed of light or sound, f is the frequency, and λ is the wavelength.
To learn more about Frequency visit here:
brainly.com/question/5102661
#SPJ4
now, each mass is pulled down by an additional 1 cm and released, so that it oscillates up and down. which of the oscillating systems has the highest frequency?
The frequency of System 1 is highest, followed by System 2, and finally System 3.
The equation: gives the frequency of an oscillating system.
f = (1 / 2π) * √(k / m)
When the mass is m, the spring constant is k, and the frequency is f.
Each mass is dragged down an additional 1 cm before being released, so the oscillation amplitude is the same for all of the masses.
The square root of the spring constant is directly proportional to an oscillating system's frequency, while the square root of the mass is inversely proportional.
As a result, the system with the greatest frequency also has the largest spring constant and lowest mass.
We shall compare the masses since, based on the available data, we are unable to tell which system has the largest spring constant.
m1 Equals 0.5 kg in System 1.
System 2: 0.8 kg/m2
System 3: 1.2 kg/m3
We can determine the frequencies of each system using the frequency formula:
f1 = (1 / 2)*(k / m1), f2*(k / m2)*(k / m3), and f3*(1 / 2)*(k / m3)
We can compare the frequencies by looking at the mass terms because the spring constant is the same for all three systems:
F1 = 1/M1 = 1/0.5 = 1.414 F2 = 1/M2 = 1/M8 = 1.118 F3 = 1/M3 = 1/M2 = 1/M3 = 0.912
System 1 therefore operates at the greatest frequency, followed by systems 2 and 3.
For Such more questions on Frequency
https://brainly.com/question/254161
#SPJ4
what sort of human activity do you think is contributing to increase carbon dioxide
The human activities that are contributing to increase carbon dioxide are said to be releasing chemicals into the atmosphere, deforestation, construction, burning fossil fuels, etc.
Burning the fossil fuels is done to produce coal, generation of electricity, in factory usage which results in the release of huge amounts of CO₂.
Smoke from the vehicles contribute to the increased CO₂ levels.
Deforestation is done to acquire land for agriculture and construction purposes. Urbanisation leads to increase in CO₂ levels with the increased construction.
Construction of high rise buildings leads to the usage of a lot of cement. Thus increasing CO₂ levels into the atmosphere.
Increased CO₂ levels in the atmosphere leads to the climate change by increasing the temperature of the earth.
To know more about human activities:
https://brainly.com/question/30665396
#SPJ4
Humans can visibly perceive light from about ____ to ____ nanometers.
a. 400, 400
b. 700, 400
c. 400, 700
d. 700, 700
are there any non-zero values for fa or fb that would put this system into equilibrium as shown? in other words, if fa acts along the line of action shown, and fb acts along its line of action, are there any values of fa or fb (non-zero) that would put this system into equilibrium? fa and fb are parallel.
The correct option is B,No, it's not possible for this to be in equilibrium as shown, regardless of what we choose for For FA or FB.
For Equilibrium
Σfx = 0, Σfy =0, M = 0
Σfx = 0
FA cos [tex]\theta_1\\[/tex], - FB cos [tex]\theta_2[/tex] = 0
FA cos [tex]\theta_1\\[/tex], = FB cos [tex]\theta_2[/tex]
Σfy =0
Σfy = FA sin [tex]\theta_1\\[/tex], + FB sin [tex]\theta_2[/tex] =0
Equilibrium is a state in which opposing forces or influences are balanced, resulting in a stable and unchanging system. It is a concept that can be observed in many natural and artificial systems, from physical systems like a balance beam to chemical reactions and economic markets. In physics, equilibrium refers to a state where the net force acting on an object is zero, resulting in a constant velocity or no motion at all.
Chemical equilibrium is a state where the forward and reverse reactions of a chemical reaction occur at the same rate, leading to no net change in the concentration of the reactants and products. In economics, equilibrium refers to the balance between the supply and demand of a good or service, leading to a stable market price. In all cases, equilibrium is a state of balance, where the system is stable and unchanging until disturbed by an external force or influence.
To learn more about Equilibrium visit here:
brainly.com/question/30694482
#SPJ4
Complete Question: -
Are there any non-zero values for FA or Fg that would put this system into equilibrium as shown? In other words, if FA acts along the line of action shown, and FB acts along its line of action, are there any values of Faor Fe (non-zero) that would put this system into equilibrium? FA and FB don't necessarily need to have the same magnitude
A.Yes, it is possible to choose values of FA and FB that will put this into equilibrium
B. No, it's not possible for this to be in equilibrium as shown, regardless of what we choose for For FA or FB.
2. a student blows across the top of an empty bottle causing it to resonate at its fundamental frequency. the bottle has a height of .4m. the speed of sound is 340 m/s. what is the fundamental frequency? (4 pts)
The fundamental frequency of the resonating air column in the bottle is 212.5 Hz. When a tube or bottle with one closed end is excited, it can resonate at certain frequencies, with the lowest frequency being the fundamental frequency.
The fundamental frequency of a resonating air column in a tube with one closed end, like the bottle in this case, is given by:
f = v/4L
where f is the fundamental frequency, v is the speed of sound, and L is the length of the air column.
In this case, the length of the air column is equal to the height of the bottle, which is 0.4 meters. The speed of sound is 340 m/s. Substituting these values into the formula, we get:
f = (340 m/s)/(4 x 0.4 m) = 212.5 Hz
Therefore, the fundamental frequency of the resonating air column in the bottle is 212.5 Hz.
When a tube or bottle with one closed end is excited, it can resonate at certain frequencies, with the lowest frequency being the fundamental frequency. The length of the air column inside the tube determines the fundamental frequency of the resonating air column. The resonant frequencies of the tube are determined by the speed of sound in air, the length of the air column, and the properties of the tube, such as its shape and the position of the closed end.
The fundamental frequency of a resonating air column in a tube with one closed end can be determined using the formula:
f = v/4L
where f is the frequency, v is the speed of sound, and L is the length of the air column. This formula assumes that the air column is a simple tube with one closed end, and that the air inside the tube is at rest before the sound wave is introduced.
Learn more about frequency here:
https://brainly.com/question/9424813
#SPJ4
The density equation is
ρ = m/v
The density of water is 1gram per 1milliliter of water. Written as 1g/1ml.
Use the density of water and the density equation to calculate the mass of 334 ml of water.
A 334 grams of water
B 334 grams/ml of water
C .003 grams/ml of water
D .003 grams of water
Answer:
We can use the density equation to find the mass of 334 ml of water.
Explanation:
Given that the density of water is 1 g/ml, we can substitute the values into the density equation:
ρ = m/v
ρ = 1 g/ml
v = 334 ml
So, m = ρ x v
m = 1 g/ml x 334 ml
m = 334 g
Therefore, the mass of 334 ml of water is 334 g, which is answer option A: 334 grams of water.
today the sun appears to be located in the middle of the constellation virgo. therefore, tomorrow the sun will be in the constellation today the sun appears to be located in the middle of the constellation virgo. therefore, tomorrow the sun will be in the constellation sagittarius. libra. leo. virgo.
If today the sun appears to be located in the middle of the constellation Virgo. therefore, tomorrow the sun will be in the constellation Virgo. Hence, option D is correct.
What is a constellation?An arrangement of stars is a constellation. Others have observed patterns in the stars that are used to classify the groups. A lion's form, for instance, appears to be traced by the stars of the constellation Leo.
The western zodiac consists of the 12 constellations Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces is one constellation tradition.
Thus, if today the sun appears to be located in the middle of the constellation Virgo. Then, tomorrow the sun will be in the constellation Virgo. Hence, option D is correct.
Learn more about the constellation, here:
https://brainly.com/question/13166871
#SPJ1
width of the wooden block
The width of the wooden block measured by the vernier caliper is 0.74 cm.
What is the width of the wooden block?
The width of the wooden block measured by the vernier caliper is calculated as follows;
Width of the wooden block = main scale reading + vernier scale reading
The main scale reading = 0.7 cm
The vernier scale reading ( point of alignment ) = ( 0.4 cm / 10 ) = 0.04 cm
The width of the wooden block measured by the vernier caliper is calculated as follows;
Width of the wooden block = 0.7 cm + 0.04 cm
Width of the wooden block = 0.74 cm
Learn more about vernier caliper here: https://brainly.com/question/24694454
#SPJ1
Identify the areas of physics involved in each of the following tests of lightweight metal alloy proposed for use in sailboat hulls.
a. Testing the effects of collision on the alloy
b. Testing the effects of extreme heat and cold on the alloy
c. Testing whether the alloy can affect a magnetic compass needle
The areas of physics involved in each of the following tests of lightweight metal alloy proposed for use in sailboat hulls are as follows:
a. Testing the effects of a collision on the alloy - The area of physics involved in this test is mechanics, specifically the study of forces and motion.
b. Testing the effects of extreme heat and cold on the alloy - The area of physics involved in this test is thermodynamics, specifically the study of heat and temperature and their relation to energy and work.
c. Testing whether the alloy can affect a magnetic compass needle - The area of physics involved in this test is electromagnetism, specifically the study of the relationship between electricity and magnetism.
You can learn more about physics at: brainly.com/question/28600368
#SPJ11
if the speed of a wave increases to 1.5 times its original speed while the frequency remains constant, how does the wavelength change?
Answer: The wavelength will also increase by a factor of 1.5
Explanation:
The relation between frequency, speed, and wavelength is
v=fλ where,v=speed
f=frequency
λ =wavelength
Substituting in the new speed and the original frequency, we get:
1.5v = fλ
Dividing both sides of the equation by f, we get:
1.5v/f = λ
So, the new wavelength is 1.5 times the original wavelength.
Read more about the relation between speed frequency and wavelength:
https://phys.libretexts.org/Bookshelves/College_Physics/Book%3A_College_Physics_1e_(OpenStax)/17%3A_Physics_of_Hearing/17.02%3A_Speed_of_Sound_Frequency_and_Wavelength
The difference between the new and old wavelengths is 1.5 times.
What is wavelength?In physics, wavelength is defined as the distance between two consecutive points in a wave that are in phase, or that are identical in their displacement from the equilibrium position. In other words, the wavelength is the distance traveled by one complete cycle of a wave.
Wavelength is typically represented by the symbol λ (lambda) and is measured in meters or other units of length. It is an important parameter of waves, including electromagnetic waves such as light and radio waves, as well as mechanical waves such as sound waves.
The wavelength of a wave is related to its frequency and speed through the equation λ = v/f, where λ is the wavelength, v is the speed of the wave, and f is the frequency. This equation demonstrates that for a given speed, an increase in frequency will result in a decrease in wavelength, while a decrease in frequency will result in an increase in wavelength.
Here in the Question,
If the speed of a wave increases while the frequency remains constant, then the wavelength must also change.
The relationship between speed, frequency, and wavelength is given by the formula:
v = fλ
where v is the speed of the wave, f is its frequency, and λ is its wavelength.
If we assume the initial speed of the wave is v1 and the initial wavelength is λ1, then we can write:
v1 = fλ1
If the speed of the wave increases to 1.5 times its original speed, then the new speed v2 is given by:
v2 = 1.5 v1
Substituting this into the equation above, we get:
1.5 v1 = fλ2
where λ2 is the new wavelength.
Solving for λ2, we get:
λ2 = (1.5 v1)/f = (1.5 λ1)
Therefore, the new wavelength is 1.5 times the original wavelength.
To learn more about Frequency click:
brainly.com/question/1292129
#SPJ2
Two newspapers Graphic and Times. delivered to 40 houses in house receives at least news newspaper. In at all of Graphic and 24 com topic copies. 26 copies of of Times are are delivered. Find the number of who which receive Times only. houses in Adentan. Each one copy of
Why do people wear special ear protection for
a rocket launch?
Because the noises of a rocket launch are so low in pitch, individuals wear specific ear protection to enable them hear the sounds of the rocket better.
What decibel level is dangerous?
Your hearing may begin to be harmed if exposed to noise over 70 dB for an extended period of time. Your ears can suffer instant damage from loud noise above 120 dB.
You can even completely lose your hearing if a firecracker goes off next to your ear. Wear earplugs and stay a safe distance away from where the fireworks are being fired off to protect your ears. Rockets make a rumbling sound before takeoff, a roaring sound during flight, and then a whooshing sound that occurs long later.
To learn more about sound use link below:
https://brainly.com/question/16613286
#SPJ1
after the switch is closed, which plate of the capacitor eventually becomes positively charged? after the switch is closed, which plate of the capacitor eventually becomes positively charged? the top plate only the bottom plate only both plates neither plate because electrons are negatively charged
After the switch is closed, the top plate of the capacitor eventually becomes positively charged
When the switch is closed, what happens to the capacitor's charge?
It initially acts like a short-circuit because when the switch is first closed, the voltage across the capacitor, which we were assured was entirely discharged, is zero volts. The capacitor will eventually operate as an open circuit because the voltage of the capacitor will eventually equal the voltage of the battery.
An electrolytic capacitor with polarity will be labelled with the word "polarity" on it. A minus sign or a color stripe that runs the length of the capacitor is commonly used to indicate the capacitor's negative. The positive lead of the capacitor is longer than the negative lead.
To learn more about capacitor use :
https://brainly.com/question/21851402
#SPJ1
what is the acceleration two point on a velocity time graph which has coordinate (10sec,15ms)and (20sec,35ms)
The acceleration between two point on a velocity time graph which has coordinate (10sec,15ms)and (20sec,35ms) is 2.5m/s².
What is Acceleration?
This is referred to as the rate at which velocity changes with time, in terms of both speed and direction.
Acceleration = change in velocity/change in time
= 35m/s - 15m/s / 20s - 10s
= 25m/s / 10s = 2.5m/s²
Read more about Acceleration here https://brainly.com/question/460763
#SPJ1
a cold beer initially at 35of warms up to 40of in 3 min while sitting in a room of temperature 70of. how warm will the beer be if left out for 20 min?
The temperature of the beer if left out for 20 mins would be 53.1°F.
Newton's law of coolingWe can use Newton's law of cooling to estimate how warm the beer will be after 20 minutes. Newton's law of cooling states that the rate of change of the temperature of an object is proportional to the difference between the object's temperature and the temperature of its surroundings. In this case, the rate of change of the beer's temperature is:
d(T)/dt = k(T - T_s)
where T is the temperature of the beer, T_s is the temperature of the surroundings, and k is a constant of proportionality.
From the problem, we know that the initial temperature of the beer is T(0) = 35°F and that it warms up to T(3) = 40°F in 3 minutes. Therefore, we can use this information to find the value of k:
k = [T(3) - T(0)] / [(T(3) - T_s) * t] = [40 - 35] / [(40 - 70) * 3] = 1/30
Now we can use this value of k to estimate the temperature of the beer after 20 minutes:
T(20) - T_s = [T(0) - T_s] * exp(-kt) = (35 - 70) * exp(-(1/30)*20) = -35 * exp(-2/3) ≈ -16.9°F
Therefore, the temperature of the beer after 20 minutes will be approximately 70°F - 16.9°F = 53.1°F.
More on Newton's law of cooling can be found here: https://brainly.com/question/14643865
#SPJ1
which particles constantly move around the center of an atom
Answer:
electron is the correct answer
Explanation:
pls mark me as brainlist
Sarah rides her horse with a constant speed of 8 km/h. How far can she travel in 1 1/2 hours?
Answer:
12 Kilometers
Explanation:
To find the distance Sarah travels in a given time, we can use the formula:
distance = speed * time
In this case, the speed of the horse is 8 km/h and the time Sarah travels is 1 1/2 hours.
distance = 8 km/h * 1 1/2 hours = 12 km
So, Sarah can travel 12 kilometers in 1 1/2 hours.
Gwen is baby-sitting for the Parker family. She takes 3-year old Allison to the
neighborhood park and places her in the seat of the children's swing. Gwen pulls the
1.8-m long chain back to make a 26° angle with the vertical and lets 14-kg Allison
(swing mass included) go. Assuming negligible friction and air resistance, determine
Allison's speed at the lowest point in the trajectory.
Allison's speed at the lowest point in the trajectory is 6.41 m/s.
What is trajectory?A mass-moving object's route through space as a function of time is known as its trajectory or flight path.
The potential energy at the highest point is given by:
PE = mgh = (14 kg)(9.8 [tex]m/s^2[/tex])(1.8 m)(cos 26°) = 237.5 J
Where h is the height above the lowest point.
At the lowest point, all of the potential energy is converted to kinetic energy, so:
KE = PE = 237.5 J
The kinetic energy is given by:
KE = (1/2)[tex]mv^2[/tex]
where v is the speed at the lowest point. Solving for v, we get:
v = sqrt(2KE/m) = sqrt(2(237.5 J)/(14 kg)) = 6.41 m/s
Thus, 6.41 m/s. Allison's speed at the lowest point in the trajectory.
For more details regarding trajectory, visit:
https://brainly.com/question/28874076
#SPJ9
why are x-rays used for crystallography? why not use some other, more accessible type of electromagnetic radiation such as ultraviolet light?
X-rays are used for crystallography because they have a much smaller wavelength than visible light or UV light, making them capable of diffracting off the regular array of atoms within a crystal lattice.
The regularity of the crystal lattice causes the X-rays to undergo constructive interference, creating a diffraction pattern that can be used to determine the structure of the crystal. X-rays are also highly energetic, allowing them to penetrate the surface of the crystal and interact with the atoms in the interior. While other types of electromagnetic radiation could be used, their longer wavelengths and lower energy levels would not be able to penetrate the surface of the crystal or diffract off the atoms in the lattice, making them less effective for crystallography. X-rays are used for crystallography because they have a much smaller wavelength than visible light or UV light, making them capable of diffracting off the regular array of atoms within a crystal lattice.
Learn more about X-rays :
https://brainly.com/question/23281551
#SPJ4
WHY is the answer B? Please give scientifically sound explanation. Will give brainliest.
The ball would stationary at the maximum height and accelerated greatly as it falls until it comes to rest on the ground. Option B
What is the velocity time graph for an object thrown up?The slope of the velocity-time graph represents the acceleration of the object. At the highest point of the object's trajectory, the acceleration is zero, as it is temporarily at rest. As the object starts to fall, its acceleration becomes negative, indicating that it is accelerating downwards due to the force of gravity.
The velocity-time graph is a useful tool for analyzing the motion of an object and understanding its velocity and acceleration at different points in time.
Learn more about velocity time graph:https://brainly.com/question/28357012
#SPJ1
Sort each of the five terrestrial bodies into the appropriate category based on the type of atmosphere it currently retains, if any. secondary atmosphere, no atmosphere - venus, - earth,- mars- mercury, - earths - moon
Secondary atmosphere- venus, earth, mars
No atmosphere- mercury, earth's moon
What is the atmosphere?
The atmosphere is the layer of gases that surrounds the Earth and is held in place by gravity. It is composed of several different gases, including nitrogen (78%), oxygen (21%), and trace amounts of other gases such as carbon dioxide, neon, helium, and hydrogen.The atmosphere plays a critical role in sustaining life on Earth. It protects the planet from harmful radiation from the sun, regulates the temperature, and provides the air that humans and other organisms breathe. It also serves as a medium for weather and climate patterns, including wind, precipitation, and atmospheric pressure.The atmosphere is divided into several layers based on temperature and composition, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has unique characteristics and plays a specific role in the Earth's atmosphere and climate.To know more about atmosphere, click the link given below:
https://brainly.com/question/26767532
#SPJ1
Venus: Venus has a surface temperature of about 737 K (464 °C, or 867 °F), and its atmosphere is composed of roughly 96 percent carbon dioxide. On Venus, clouds are composed of sulphuric acid (H2SO4) and move in an easterly direction at a speed of about 100 m/s (224 miles per hour).
Earth: The atmosphere of Earth has five layers and is made up of nitrogen, oxygen, water vapour, carbon dioxide, and other trace elements. The troposphere, stratosphere, mesosphere, thermosphere, and exosphere are among them. As one ascends higher into the atmosphere and moves away from the surface, air pressure and density generally decline.
Mars: The planet has a narrow atmosphere that is primarily made of diatomic nitrogen and contains about 95% carbon dioxide. There are also traces of water vapour.
Mercury: It is too hot and too small to retain an atmosphere . However, it does have a tenuous and variable exosphere that is made up of hydrogen, helium, oxygen, sodium, calcium, potassium and water vapour.
Earth’s Moon: Until recently, most everyone accepted the conventional wisdom that the moon has virtually no atmosphere.
What is the Atmosphere?
An Atmosphere is a layer of gas or layers of gas that surround a planet and are kept in place by the gravity of the planetary body. When the gravity is strong and the temperature of the atmosphere is low, a planet maintains its atmosphere. The outer region of a star, which contains the layers above the opaque photosphere, is known as the stellar atmosphere ; low-temperature stars may have outer atmospheres with compound molecules.
To learn more about Atmosphere from the given link
https://brainly.com/question/26767532
#SPJ1
a 2 coulomb charge is moved from a to b in the presence of an electric field created by other charges. the potential energy when the charge is at point b is 30 j higher then the potential energy when the charge was at a. the voltage (created by the other charges) at point a was 10 volts. what is the voltage at point b?
When the charge is at point b, the potential energy is 30 j, and the voltage produced at point b by the other charges is 25 volts.
We can use the formula for potential energy in an electric field to relate the change in potential energy to the difference in voltage between the two points:
ΔU = qΔV
here,
ΔU is change in potential energy,
q is charge, and
ΔV is difference in voltage.
We are given that
q = 2 C, and
That the change in potential energy
= ΔU = 30 J.
Therefore, we can solve for the difference in voltage between points a and b:
ΔV = ΔU / q
ΔV = 30 J / 2
ΔV = 15 V
This means that the voltage at point b is
10 V + 15 V = 25 V,
because the potential energy when the charge is at point b is 30 J higher than at point a.
Therefore, the voltage created by the other charges at point b is 25 volts.
To know more about potential please refer: https://brainly.com/question/24284560
#SPJ4
what parts are in a tv
The exterior or housing, the audio reception and speaker system, the picture tube, and a complicated mass of electronics including cable.
What are the principal sets of parts in TV?Antennae input and output devices, a built-in antenna in most sets, a remote control receiver, and computer chips, make up the four main sets of parts that make up a television.
Typically, in addition to coaxial cable, HDMI, and other audio-video connectors, smart TVs also enable Ethernet, WiFi, USB, Bluetooth, and flash memory cards from digital cameras.
Therefore, the TV consists of exterior, audio reception, speaker system, and picture tube.
Learn more about TV, here:
https://brainly.com/question/24030285
#SPJ9
What types of intermolecular forces are exhibited by each compound? 1. lon-lon 2.Hydrogen bonding 3.Dipole-Dipole 4.van der Waals forces OH N 'N
It's worth noting that most molecules can exhibit a variety of intermolecular forces. The types of intermolecular forces that exist are determined by the molecule's specific structure and composition.
OH: The OH molecule can exhibit hydrogen bonding, which is a type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom such as oxygen or nitrogen.
Nitrogen gas (N2) is a nonpolar molecule that does not form hydrogen bonds. It can, however, exhibit van der Waals forces, which are weak attractive forces that occur between all molecules, including nonpolar ones like N2.
'N': It is unclear what is meant by "'N," but assuming it refers to a nitrogen-containing molecule, the types of intermolecular forces it can exhibit vary depending on the molecule. Hydrogen bonding can occur when a hydrogen atom is bonded to a highly electronegative atom, such as oxygen or nitrogen. If the molecule is polar (has a separation of positive and negative charge across the molecule), dipole-dipole interactions can occur. Van der Waals forces can be observed in nonpolar molecules.
To Learn More About force click
https://brainly.com/question/26115859
#SPJ4
