Answer:
k = 2400 N/m
Explanation:
Given that,
Force acting on the spring, F = 12 N
The spring stretches 5 mm = 0.005 m
We need to find the force constant of the spring.
The force acting on the spring is given by Hooke's law as follows :
F = kx
Where k is force constant
[tex]k=\dfrac{F}{x}\\\\k=\dfrac{12\ N}{0.005\ m}\\\\=2400\ N/m[/tex]
So, the force constant of the spring is 2400 N/m.
........................ is The force affecting on an object during certain period of time *
A.Momentum
B.Impulse
C.Kinetic energy
D.None of above
Answer:
I think c is the answer but I have a little concern on d too
Planets A and B have the same size, mass, and direction of travel, but planet A is traveling through space at half the speed of planet B. Which statement correctly explains the weight you would experience on each planet?
Planet A is heavier than Planet B
Because Planet A is heavier than Planet B, Planet B will be easier to be moved by gravity causing it to move faster than Planet A.
Hope This Helped : )
Every person uses energy stored in the fat cells of their body. This stored energy is in the
form of A.Chemical energy B.mechanical energy C.heat energy D.Nuclear energy
Answer:A chemical energy MERRY CHRISTMAS
Explanation:
Answer:
A) Chemical Energy.
Explanation:
An Alternating voltage has peek value 14. 14 V its rms value is
Answer:
10 V
Explanation:
RMS Voltage (Root Mean Square Voltage) of a Waveform is the amount of AC power that produces the same heating effect equal to that of a DC.
The peak voltage is the highest value the voltage of any waveform can attain (that is it is the maximum voltage attained).
The RMS voltage is given as:
[tex]V_{rms}=\frac{V_p}{\sqrt{2} } \\\\Given\ V_p=14.14\ V,hence:\\\\V_{rms}=\frac{14.14}{\sqrt{2} } \\\\V_{rms}=10\ V[/tex]
A 10 kg cart is rolling across a parking lot with a velocity of .5 m/s. What is its momentum?
Hello!
[tex]\large\boxed{p = 5 \text{ } kgm/s}[/tex]
Use the equation for momentum:
[tex]p = mv[/tex]
Plug in the given mass and velocity into the equation:
[tex]p = 10 * 0.5[/tex]
[tex]p = 5 kgm/ s[/tex]
On Earth, the parallax angle measured for the star Vega is 0.129 arcseconds. If you were to measure Vega's parallax angle on Pluto, what would the parallax angle be?
Answer: 7.75pc
Explanation:
Given data:
p = 0.129arcseconds.
Solution:
D = 1/p
D = 1/0.129
D = 7.75pc
The Vega is 7.75parsecs from Pluto.
A dump truck contains a load of soil. Which action will INCREASE the dump
truck's inertia?
A. Increase the force applied by the engine.
B. Decrease the truck's speed.
C. Dump out some of the soil.
D. Add more soil,
HELP ME QUICK!
Answer:
D : Add more soil
Explanation:
A graph titled Distance as a Function of Time with horizontal axis time (seconds) and vertical axis distance (meters). A straight blue line labeled higher track starts at 0 seconds 0 meters and upward to 3 seconds 7 meters. A straight orange line labeled lower track starts at 0 seconds 0 meters and runs upward to 6 seconds 3 meters. Use the graph of distance versus time to complete the sentences. The cars on the higher track travel the cars on the lower track, in the same time. This means that the cars on the higher track have a average speed than those on the lower track. This is demonstrated by the of the higher track line being greater than the slope of the lower track line.
Answer
The cars on the higher track travel
✔ farther than
the cars on the lower track, in the same time.
This means that the cars on the higher track have a
✔ greater
average speed than those on the lower track.
This is demonstrated by the
✔ slope
of the higher track line being greater than the slope of the lower track line.
Explanation:
Answer:
farther than greater slope
Explanation:
have a nice day
A student heats a liquid on a burner. What happens to the portion of liquid that first begins to warm? It loses energy. It becomes less dense. It sinks downward. Its molecules get closer together.
PLEASE HURRY
Answer:
they get closer together
A student heats up a liquid on a burner. The portion of liquid which first begins to warm and becomes less dense. Thus, the correct option is B.
When the heat is supplied to the liquid solution through the burner then, a portion of the liquid at the bottom of the solution will start to heat first. This means that the molecules at the bottom of the container will start to gain kinetic energy and thus the intermolecular forces between them start to decrease and they start moving.
As a result of this, the molecules will start to move from their initial position in the solution. That is, the molecules per unit volume of the solution will decrease. Hence, the density of the solution will decrease and the liquid will rise upward.
Therefore, the correct option is B.
Learn more about Liquids here:
https://brainly.com/question/20922015
#SPJ6
What does the slope of a position-time graph reveal about an object's motion?
The steeper the slope, the larger the velocity. In this case, the object is going faster.
The more shallow the slope, the smaller the velocity. So the object isn't going as fast as compared to steeper slopes.
If the slope is positive, then the object is moving in the positive direction; otherwise, if the slope is negative, then the object is moving in the negative direction.
If the slope is 0, then the object's velocity is 0 and the object is stationary. Horizontal lines always have a slope of zero.
A 60 kg mass is moving at 5 m/s and collides with a 2 kg mass. All the momentum of the first mass is transferred in the collision to the second mass. What will the velocity (in m/s) be for the 2 kg mass?
Answer:
v = 150 [m/s]
Explanation:
Linear momentum is defined as the product of mass by Velocity. In this way, by means of the following equation, we can calculate the momentum.
[tex]P=m*v\\[/tex]
where:
m = mass [kg]
v = velocity [m/s]
[tex]P =60*5\\P =300 [kg*m/s][/tex]
Since all momentum is transferred, we can say that this momentum is equal for the mass of 2 [kg]. In this way, we can determine the speed after the impact.
[tex]v = P/m\\v = 300/2\\\\v = 150 [m/s][/tex]
If a substance has an atomic mass of 20 and has an atomic number of 10, how many neutrons does this element have?
10
7
20
9
Explanation:
This element have 10 neutrons
What is the potential energy of a 5kg rock that is 7m high on a hill
Explanation:
Gravitational potential energy = mgh = (5)(9.81)(7) = 343.35J.
Summarize how you would determine the hardness of an unidentified mineral sample.
Answer:
To determine the hardness of an unknown sample, you can scratch the mineral against those on the Mohs hardness scale. The scale lists 10 minerals in order of increasing hardness
Explanation:
The size of a balloon increases when the pressure inside it increases. The balloon gets bigger when it is left in the heat from the Sun. Why does this happen?
Explanation:
This happens because the gas inside tend to expand because its temperature gets higher.
This is why the balloon that is put in a freezer for too long tend to gets smaller, because the gas temperature that is inside the balloon decreases.
(you can try it at home)
It is related to the temperature of the gas.
A patient is admitted to the hospital with shortness of breath, but after testing, is found to have a myocardial infarction. In this situation , the myocardial infarction is the
Answer: In this situation , the myocardial infarction is the medical diagnosis of the patient.
Explanation:
Medical diagnosis is the various steps that are being taken by a medical personnel to disease or condition of a patient with respect to the signs and symptoms observed. The steps taken by the medical personnel includes:
--> the Medical history of the patient,
--> physical examination is carried out on the patient.
--> diagnostic tests are equally performed..
Myocardial infarction which is also called heart attack is the medical diagnosis given when a blood clot blocks blood flow to the heart. In the physical examination of the patient, shortness of breath is a common signs of the condition. Hope this helps, thanks!
There is a 90 kg woman attached at the end of a bungee cord (k = 35 N/m) that is experiencing simple harmonic motion. How long does it take the woman to complete one cycle?
Answer:
The value is [tex]T =10.1 \ s[/tex]
Explanation:
From the question we are told that
The mass of the woman is [tex]m = 90 \ kg[/tex]
The spring constant of the bungee cord is [tex]k = 35 \ N/ m[/tex]
Generally the period of the oscillation (i,e time taken to complete on cycle ) is mathematically represented as
[tex]T = 2 \pi * \sqrt{ \frac{m}{k} }[/tex]
=> [tex]T = 2 * 3.142 * \sqrt{ \frac{90 }{ 35} }[/tex]
=> [tex]T =10.1 \ s[/tex]
A block of mass 4 kilograms is initially moving at 5m/s on a horizontal surface. There is friction between the block and the surface which causes the block to come to a complete stop. The coefficient of kinetic friction between the block and the surface is 0.5.
Calculate the distance the block slides while coming to a stop. Show all work.
• Net vertical force on the block:
∑ F = n - w = 0
(n = magnitude of normal force, w = weight)
n = w = m g
(m = mass, g = 9.8 m/s²)
n = (4 kg) (9.8 m/s²) = 39.2 N
• Net horizontal force:
∑ F = -f = m a
(f = mag. of friction, a = acceleration)
We have f = µ n = 0.5 (39.2 N) = 19.6 N, so
-19.6 N = (4 kg) a
a = -4.9 m/s²
With this acceleration, the block comes to a rest from an initial speed of 5 m/s, so that it travels a distance ∆x in this time such that
0² - (5 m/s)² = 2 (-4.9 m/s²) ∆x
∆x = (25 m²/s²) / (9.8 m/s²) ≈ 2.55 m ≈ 2.6 m
Which of these situations does not involve a transfer of energy? Group of answer choices A gas grill burns propane fuel. The Sun radiates light into space. A large crate is pushed up a ramp. A helium balloon on a string floats in place
Answer:
A helium balloon
Explanation:
not sure btw
In a motor the consistent turning of an electromagnetic in the same direction causes electrical energy to be transformed into mechanical energy. What part of the motor cause this motion?
A.The loop of wire
B.The permanent magnets
C.The power source
D.The communicator
Help
Answer:
Explanation:
The communicator
2. A marble is rolling at a velocity of 1.5 m/s with a momentum of 3.0 kg×m/s. What is its mass?
Answer:
m= 2[kg]
Explanation:
Linear momentum can be calculated as the product of mass by Velocity.
[tex]P=m*v[/tex]
where:
P = linear momentum = 3 [kg*m/s]
v = velocity = 1.5 [m/s]
m = mass [kg]
[tex]m=P/v\\m=3/1.5\\m=2[kg][/tex]
Give an example of an object that has balanced forces acting on it.
Show your work! An 800kg cannon expels a cannonball. If, after the explosion, the cannon is moving to the LEFT with a velocity of 4 m/s, and cannon ball is fired at a rate of 30 m/s to the RIGHT. What is the mass of the cannon ball?
Answer:
106,67 kg
Explanation:
momentum before = momentum after
p before = p after
momentum = p = m v
m = mass
v = velocity
v = + = to the right
v = - = to the left
vo = the velocity of both cannon and cannon ball before fire
p before = p after
(mass cannon (mc) + mass cannon ball (mcb)) x vo = mc x vc + mcb x vcb
(800 + mcb) x 0 = 800 x (-4) + mcb x 30
0 = -3200 + 30mcb
3200 = 30 mcb
mcb = 3200/30 = 106,67 kg
Multi celled organisms have a ______ surface area to volume ratio than single celled organisms.
A. Larger
B. Comparable
C. The same
D. Smaller
correct answer first gets brainliest, and 20 points!
a. Which gear combination would you like to use when you want to pedal with as few strokes as possible and have your wheels turn as many times as possible?
b. Now you are going up a hill and want to maximize the force you deliver to the wheel. You aren’t concerned with how many strokes you are making, but you want to get as much force to the wheel as possible. Which gear combination would you use now, and why?
Answer:
A. I would Pedal a couple of times at a medium rate.
B.I would stand up and pedal as hard and fast as I could to make a strong force.
Explanation:
These things help with acceleration, force, etc.
what is the correct answer?
Answer:
D) 4
Explanation:
Roots of a polynomial must be factors of the last term.
In this case, the factors of 6 are +1, -1, +2, -2, +3, -3, +6, -6. The only factor that doesn't show up, given the options, is 4. This means that D is the correct answer.
An object is NOT accelerating. Is its motion changing?
Yes or No?
Answer:
Acceleration is 0. Acceleration is the change in velocity over time, so if acceleration is 0, the change in velocity is 0 no matter how much time passes. THIS DOES NOT MEAN VELOCITY IS 0. it only means that velocity is constant. In other words, the speed of motion will not change
Explanation:
A girl, standing 150m in front of a tall building, fires a shot using a starting pistol. A boy, standing
350 m from the girl
, hears two bangs 1s apart.
June 200
my
PATI
gid
boy
47
150 m
350 m
From this information, what is the speed of sound in air?
A 300 m/s
B 350 m/s
D 650 m/s
C 500 m/s
Answer:
I believe 650 or C
Explanation:
plz mark brainnlyist :)
If a team pulls with a combined force of 4 newtons on an airplace with a mass of 36 kilograms,what is the acceleration of the airplane
Heya!!
For calculate aceleration, lets applicate second law of Newton:
[tex]\boxed{F=ma}[/tex]
Δ Being Δ
F = Force = 4 N
m = mass = 36 kg
a = Aceleration = ?
⇒ Let's replace according the formula:
[tex]\boxed{4\ N = 36\ kg * \textbf{a}}[/tex]
⇒ Clear acceleration and resolve it:
[tex]\boxed{\textbf{a}=0,111\ m/s^{2}}}[/tex]
Result:
The aceleration is of 0,111 meters per second squared (m/s²)
Good Luck!!
Justin and Kenneth have been best friends for as long as they can remember. Kenneth loves to run, but Justin hates to exercise. Recently, they both went for an annual checkup at the doctor, and they are comparing their blood test results. Based on the information you know, which of the following is most likely true?
Answer: Justin will have higher level of hemoglobin.
Explanation: athletes have an increased total mass of red blood cells and hemoglobin in circulation.
Answer:
Justin will have higher level of hemoglobin.
Explanation:
