Given:
The resistance in the circuit is R = 16 ohm
The current in the circuit is I = 5 A.
To find the voltage in the circuit.
Explanation:
The voltage in the circuit can be calculated using Ohm's law,
[tex]\begin{gathered} V=5\times16 \\ =80\text{ V} \end{gathered}[/tex]Final Answer: The voltage in the circuit is 80 V.
Match the word with the correct definition. 1. racket A. as someone says or something shows 2. in fact B. completely different in direction or position 3. perpendicular C. a piece of sports equipment used to hit a ball 4. opposing D. not able to stretch or bend easily 5. inelastic E. forming a 90-degree angle 6. according to F. used to emphasize what is true
The words with their correct definition include the following below:
1. racket - C. a piece of sports equipment used to hit a ball.
2. in fact - F. used to emphasize what is true.
3. perpendicular - E. forming a 90-degree angle.
4. opposing - B. completely different in direction or position.
5. inelastic - D. not able to stretch or bend easily.
6. according to - A. as someone says or something shows.
What is Inelastic?This is a word which is is referred to as a variable not being sensitive to changes or other parameters and is also used to describe a substance which can't stretch or bend easily.
In other to emphasize something which is true or valid , in fact is used which is the correct choice.
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If you are dividing an objects distance traveled by its speed, you are calculating its
Time of travel
Displacement
Momentum
Acceleration
If you are dividing an objects distance traveled by its speed, you are calculating its Time of travel.
What is Time of travel?
Time travel is the idea of moving between certain moments in time, similar to moving between various points in space by a person or an object, usually with the use of a fictitious machine called a time machine. The idea of time travel is well known in philosophy and literature, especially science fiction. H. G. Wells' 1895 book The Time Machine popularised the concept of a time machine. It is unknown whether going back in time is physically possible, and if it is, there may be causality issues that arise. It has been widely seen and is generally understood within the context of special relativity and general relativity to be possible to move through time in the opposite direction from how we typically perceive it.
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CER (claim, evidence, reasoning)
Claim: Human powered generators are the best energy source for the rescure team.
Evidence: Human powered generators can be used to transfer enrgy any time somone is there to turn the crank.
Reasoning: ?
The reasoning that can be used to agree with the claim that has ben made is that the human powered generators are the best due to the fact that they would not have to require the long time and they would not have to consume resources.
What is a claim?This is the term that is used to refer to a statement or an assertion that has been made which has not yet been proven.
The human powered generators are the best due to the fact that they would not require the resources that are known to be more consuming. That is they are renewable and like fossils they would not have any forms of adverse effects on the environment that they are used.
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A camera has a lens diameter of 0.0444m. What wavelength of light INNANOMETERS must it use to resolvetwo objects 550 m away that are0.00718 m apart?[?] nm
Given:
• Diameter, D = 0.0444 m
,• Distance, x = 0.00718 m
,• d = 550 m
Let's find the wavelength in nanometers.
Apply the formula:
[tex]sin\theta=\frac{1.22\lambda}{D}[/tex]Where:
λ is the wavelength,
Also, we have the formula:
[tex]\begin{gathered} sin\theta=\frac{x}{d} \\ \\ sin\theta=\frac{0.00718}{550} \\ \\ sin\theta=1.30545\times10^{-5}\text{ m} \end{gathered}[/tex]Now, plug in 1.30545 x 10⁻⁵ m for sinθ in the first equation.
Where:
D = 0.0444
Thus, we have:
[tex]\begin{gathered} sin\theta=\frac{1.22\lambda}{D} \\ \\ 1.30545\times10^{-5}=\frac{1.22\lambda}{0.0444} \\ \\ \lambda=\frac{1.30545\times10^{-5}*0.0444}{1.22} \\ \\ \lambda=\frac{5.796\times10^{-7}}{1.22} \\ \\ \lambda=4.751\times10^{-7}m \end{gathered}[/tex]In nanometers, the wavelength will be:
[tex]\begin{gathered} \lambda=475.1\times10^{-9}m \\ \\ \lambda=475.1\text{ nm} \end{gathered}[/tex]Therefore, the wavelength in nanometers is 475.1 nm.
• ANSWER:
475.1 nm
A rocket-powered hockey puck has a thrust of 4.70 N and a total mass of 2.20 kg. It is released from rest on a frictionless table, 5.00 m from the edge of a 2.40 m drop. The front of the rocket is pointed directly toward the edge. How far does the puck land from the base of the table?
Scientists utilize empirical methods to examine the natural world, which means that they are founded on observations and experimentation rather than on personal beliefs or emotions.
Activities and procedures involving scientists' quest of knowledge are referred to as scientific inquiry.
The physical world is what?Physical science studies the inorganic cosmos. To put it another way, it doesn't study living things. Science that investigates life, or biology, studies those.
The four main subfields of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
The systematic study of the physical universe is known as science. The foundation of science is the observation of that reality. Science is both empirical and developing.
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Calculate the net force.
100 J of work are done by a pushing force in order to move an object 2 m. Use this information to calculate the size of the pushing force. Use the symbol equation below to help you.
W = F s
The size of the pushing force, given that 100 J of work was done through a distance of 2 m is 50 N
How to determine the size of the forceWork can be defined as the product of force and distance moved in the direction of the force.
Work done (Wd) = force (F) × distance (d)
Wd = fd
With the above formula, we can detertmine the force. Details below
From the question given above, the following data were obtained:
Workdone (Wd) = 100 JDistance (d) = 2 mForce (F) = ?Work done (Wd) = force (F) × distance (d)
100 = Force × 2
Divide both sides by 2
Force = 100 / 2
Force = 50 N
Thus, the pushing force is 50 N
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How much heat is necessary to change 460 g of ice at -18°C to water at 20°C? kcal
Given:
The mass of ice is,
[tex]m=460\text{ kg}[/tex]The initial temperature of ice is,
[tex]t_i=-18^{\circ}C[/tex]The heat for this ice to become 0 degree C ice is,
[tex]\begin{gathered} H_1=460\times0.5\times18 \\ =4.14\text{ kcal} \end{gathered}[/tex]The heat needed for 0 degree ice to 0 degree water is,
[tex]\begin{gathered} H_2=460\times80 \\ =36.8\text{ kcal} \end{gathered}[/tex]Now the heat for the final step to reach 20 degrees is,
[tex]\begin{gathered} H_3=460\times1\times(20-0) \\ =9.2\text{ kcal} \end{gathered}[/tex]The total heat is,
[tex]\begin{gathered} H=4.14+36.8+9.2 \\ =50.1\text{ kcal} \end{gathered}[/tex]Hence the total heat is 50.1 kcal.
For the following, determine the meaning of the bolded word by using
definition and example clues from the text.
The snake wound itself around its prey, entwining the
mouse within its body.
A. The state of being wrapped around something
OB. A force of nature
C. An injury to the body
D. The action of hurting someone
hello I am using kinematic equations to find the projectile motion of the ball. in a question I am given the range of flight dx= 1.02time of flight t=1.20s height if launch dy=1mI need help finding the time to the highest point and velocity of ball upon impact
Given
x = 1.02 m
t = 1.20s
y = 1m
Procedure
The time of flight of a projectile motion is the time from when the object is projected to the time it reaches the surface.
The maximum height is reached when vy = 0 Using this we can rearrange the velocity equation to find the time it will take for the object to reach maximum height
[tex]\begin{gathered} t=\frac{v_y}{g} \\ t=\frac{5.88\text{ m/s}}{9.81\text{ m/s}^2} \\ t=0.6s \end{gathered}[/tex]
I need help with this question how to solve it for Brass and Cooper
Take into account that density and relative density are given by:
[tex]\begin{gathered} \text{density}=\text{ mass/volume} \\ \text{relative density = density/density of water} \end{gathered}[/tex]Take into account that the volume associated to each of the given sustances in the table is determined by the Level Difference (because it is the change in the volume of the water of the recipient in which the substance is immersed).
The density of water in kg/m^3 is 1000 kg/m^3.
Due to the density must be given in kg/m^3, it is necessary to express the volumes of the table in m^3 and mass in kg, then, consider the following conversion factor:
1 m^3 = 1000000 ml
1 kg = 1000 g
Then, you obtain the following results:
Brass:
[tex]\begin{gathered} 53.2g\cdot\frac{1kg}{1000g}=0.0532kg \\ 6ml\cdot\frac{1m^3}{1000000ml}=0.000006m^3 \\ \text{density}=\frac{0.0532kg}{0.000006m^3}\approx8866.67\frac{kg}{m^3} \\ \text{relative density=}\frac{(\frac{8866.66kg}{m^3})}{(1000\frac{kg}{m^3})}\approx8.87 \end{gathered}[/tex]Cooper:
[tex]\begin{gathered} 57.4g=0.0574kg \\ 6ml=0.000006m^3 \\ \text{density}=\frac{0.0574kg}{0.000006m^3}\approx9566.67\frac{kg}{m^3} \\ \text{relative density=}\frac{\frac{9566.67kg}{m^3}}{1000kg}=9.57 \end{gathered}[/tex]A child is swinging on a playground swing. If she completes one full cycle (i.e. back and forth one time) in 5 seconds, What is the frequency of the swing? What is the period?
Given:
The child completes one full cycle in,
[tex]t=5\text{ s}[/tex]To find:
Frequency and the period
Explanation:
The time for one complete oscillation is called the period of an oscillation.
So, the time period is,
[tex]T=5\text{ s}[/tex]The frequency is,
[tex]\begin{gathered} f=\frac{1}{T} \\ =\frac{1}{5} \\ =0.2\text{ Hz} \end{gathered}[/tex]Hence, the frequency is 0.2 Hz and the period is 5 s.
What is malleability and brittleness? How do they affect the physical changes in solid materials? 20 pts please!!!!!!!!!!!!!!!!!
Explanation:
malleability is the property of a material that has the ability to deform under compressive stress.
brittleness is when a material is subjected to stress and it fractures with little elastic deformation and without significant plastic deformation.
If it takes Ashley 4.5 seconds to run at an average speed of 5.5 meters per second, what is the distance (in meters) she covers in that time? Round your answer to one decimal place.
Given:
The average speed of Ashley is,
[tex]v=5.5\text{ m/s}[/tex]The time for which Ashley runs is,
[tex]t=4.5\text{ s}[/tex]The distance Ashley covers in this time are,
[tex]\begin{gathered} d=vt \\ =5.5\times4.5 \\ =24.7\text{ m} \end{gathered}[/tex]Hence, the distance is 24.7 m.
Which of the following is a strategy for encoding a message? (Select all that apply.)
The following is a strategy for encoding a message that is gesturing.
The communication process begins when a sender or sender selects words symbols images, etc. to represent the message to be conveyed to the recipient. This process known as encoding involves putting thoughts ideas, or information into symbolic form. Coding is the process of transforming thoughts into communication. Encoders use the medium to send messages phone calls emails text messages face-to-face meetings, or other means of communication.
There are varying levels of conscious thought in encoding messages. Encoding and decoding a message is the process of first converting the original text into a random meaningless text called ciphertext. This process is called encoding. Decryption is the process of converting this ciphertext back to the original text. This process is also called the encryption-decryption process. The process of converting a set of characters into a specific format for efficient transmission or storage.
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The length of the displacement vector represents how far an object
Answer:
The displacement vector from one point to another is an arrow with its tail at the first point and its tip at the second. The magnitude (or length) of the displacement vector is the distance between the points and is represented by the length of the arrow
why isnt senator naismiths argument convincing?
Senator Naismith's argument is not convincing because he committed a fallacy of hasty generalization.
What is an Argument?This is referred to as a form of disagreement between two or more parties and statements are usually used in this scenario so as to determine the truth about the subject topic. Arguments can be written or being spoken depending on the condition at that point in time.
In Senator Naismith argument, he mentioned that "everyone knows that poop does not contain anything healthy" which is fallacy of generalization and is not a valid claim due to it not being proved and was only used in that context.
This is therefore the reason why the Senator's argument was regarded as not being convincing and is therefore the reason why it was chosen as the correct choice.
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How do you find the energy transferred to water ? I had the temperature of water, highest water temp,increase in water temp, mass of metal block(iron), and decrease in metal block
Apply : ( for each element)
Q = m x c x ΔT
Where:
Q= heat
m= mass
c = specific heat capacity
ΔT = temperature change
All measurements are subject to some uncertainty. Is this true or false?
All measurements in the measured with some uncertainity which is regardless of the accuracy considered while measurements.
This uncertainity reflects the incomplete knowledge or the systematics errors due to the instruments used.
Hence, the given statement is true.
It takes a force of 150 newtons to move a 300 newton object up a ramp to a height of 3 meters. How could you reduce the amount of force needed to move an object?Select one:a. Make the ramp higher.b. Make the ramp longer.c. Make the ramp shorter.d. Lift the object without the ramp.
Explanation
Step 1
Diagram:
Step 2
the work done by an object is defined as:
the product of the displacement of an object and the component of the applied force which is in the direction of the object's displacement:
[tex]Work=force*distance*cos(angle)[/tex]so,let
[tex]\begin{gathered} displacement\text{ =}3m \\ force=\text{ 150 N} \end{gathered}[/tex]therefore,l to reduce the amount of force needed , we need to affect the distnace or the angle
Step 3
let's check every option
A)Make the ramp higher.
as the distnace becomes greater the force must increase too, so this is not the rigth option,in other words , a higher distnace will neeed a stronger force
B)making the ramp longer will make the angle becomes smaller, and this makes the distance becomes greater,
C) when yuo make the ramp shorter ,you will need the same force because the displacementis vertical
when the angle becomes smaller, the work will be the same, but the distnace and force, change, cos
[tex]\begin{gathered} Work=force*distance*cos(angle) \\ cos\text{ \lparen angle}\Rightarrow0)=1 \\ so,\text{ } \end{gathered}[/tex]when the angle goes to 0° degrees the required force becomes smaller, so
the answer is
b. Make the ramp longer.
D)finally, if yuo lift the object witouth the ramp ( vertically) , the distnace becomes smaller, ( only 3 m),but the force is the total weigth of the object ( 300 N)
I hope this helps you
How much momentum does a 2500 kg mass moving at21. m/s have?kg*m/s (Round to 2 significant figures)
The momentum can be calculated with the following formula:
[tex]p=mv[/tex]Where m is the mass and v is the velocity.
So, for m = 2500 kg and v = 21 m/s, we have:
[tex]\begin{gathered} p=2500\cdot21 \\ p=52500 \end{gathered}[/tex]Rounding to 2 significant figures, we have a momentum of 53000 kg*m/s
2. Justin Beiber (mass 60kg) fell off a 108m cliff and
landed in the sea. How fast was he going when he hit
the water?
Justin Beiber (mass 60kg) fell off a 108m cliff and landed in the sea. The velocity of him when he was going when he hit the water is (V)=46.08 m/s.
What is velocity?Velocity is a term of physics that is used to decide the value of object's covered distance in a constant time. It can be measured in m/s and cm/s.
How can we calculate the velocity?To calculate the velocity we are using the formula here is, v²-u²=2gh
Here we are given,
u= The initial velocity of Justin Beiber = 0 m/s.
g= The acceleration due to gravity. = 9.8 m/s².
h= The height of the cliff. = 108m.
We have to calculate the final velocity of Justin Beiber = v.
Now we put the values in above equation, we get,
v²-u²=2gh
Or, v²-(0)²=2*9.8*108
Or, v²=2116.8
Or, v=46.008 m/s
From the above discussion we can say that, the velocity of him when he was going when he hit the water is (V)=46.08 m/s.
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2 The deposit cylinder of a teller drive-in window at a bank travels through the tube at a constant speed of 4 meters per second. If it takes 17 seconds to travel from the car to the teller. What is the length of the tube the cylinder travels through.
The length of the tube the cylinder travels through 68 m
Constant speed of Cylinder v = 4 m/s
acceleration of Cylinder a = 0 [tex]m/s^2[/tex]
time taken during travel t = 17 Seconds
Since acceleration is constant, hence as per the equation of motion
[tex]S = vt + \frac{1}{2}at^2[/tex]
[tex]S = 4\times17 + \frac{1}{2}(0)17^2[/tex]
S = 68 m
What is acceleration ?The acceleration is positive when the object is speeding up and negative when speeding down. According to Newton’s Second Law, the net unbalanced force which acts on the object causes this to happen. Thus, it can be said that acceleration is a vector quantity. It is so because it changes the time rate of change of velocity. Mainly, Uniform acceleration, non-uniform acceleration, and average acceleration are the three types of accelerated motions.
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What is the x component of a vector that is defined as 852 at 302^o
Answer:
451 m
Explanation:
The x component of a vector can be calculated by multiplying the magnitude of a vector by the cosine of the angle, so the x component of the vector of 852 m at 302° is
852cos(302) = 451.4 m
Therefore, the answer is 451 m
A man is changing a light bulb at the top of a 1500 foot tall radio tower and drops his screwdriver. Assuming no air resistance, how long will it take to hit the ground in seconds?
Answer:
9.68 seconds
Explanation:
To answer the question, we will use the following equation for the uniformly accelerated motion:
[tex]x=v_0t+\frac{1}{2}at^2[/tex]Where x is the distance travel by the object, v0 is the initial velocity, a is the acceleration and t is the time.
Since, the man drops his screwdriver, x = 1500 ft, v0 = 0 ft/s and a = -32 ft/s².
Then, replacing the values, we get:
[tex]\begin{gathered} -1500=0t+\frac{1}{2}(-32)t^2 \\ -1500=\frac{1}{2}(-32)t^2 \end{gathered}[/tex]Then, solving for t, we get:
[tex]\begin{gathered} -1500=-16t^2 \\ \frac{-1500}{-16}=\frac{-16t^2}{-16} \\ 93.75=t^2 \\ \sqrt[]{93.75}=t \\ 9.68\text{ s = t} \end{gathered}[/tex]Therefore, the screwdriver takes 9.68 seconds to hit the ground.
The table shows data for four planetary bodies. If your mass is 68.05 kg, howmuch gravitational force would you experience on the surface of Mercury?Newton's law of gravitation is F gravity=Gmma. The gravitational constantGis 6.67 × 10-11 N-m2/C?. (For the purposes of calculating the gravitationalforce between a planet and an object on its surface, the distance r is theradius of the planet.)
Answer:
about 251.6 N
Explanation:
You want the force due to gravity on the planet Mercury for a mass of 68.05 kg. Mercury has a mass of 3.30×10²³ kg, and a radius of 2.44×10⁶ meters.
ForceThe force due to gravity between masses M and m is given by the formula ...
F = GMm/r² . . . . . where G ≈ 6.67×10⁻¹¹
For the given masses, the force between them is ...
[tex]F=\dfrac{GMm}{r^2}=\dfrac{(6.67\times10^{-11})(3.30\times10^{23})(68.05)}{(2.44\times10^6)^2}\approx\boxed{251.6\quad\text{N}}[/tex]
You would experience a force of 251.6 newtons on the surface of Mercury.
How far away from a canyon wall are you if it takes 2.29 seconds to hear your echo. (Assume the speed of sound in air is 343.33 m/s).
Distance between canyon wall and the person who hear the echo after 2.29 seconds is 786.23 meter.
What is echo?An echo is a sound that is partially or completely repeated as a result of REFLECTION. REVERBERATION is a type of reflected sound, although in this instance, it is impossible to tell apart individual repetitions of the original sound. They are also used in SONAR (Sound navigation and ranging) and RADAR(Radio detection and ranging).
Given that in the question it takes 2.29 seconds to reach the person speed of sound in air is 343.33 m/s, so the distance between the person and the source of sound canyon is 786.23 m.
786.23 m far away from a canyon wall are if it takes 2.29 seconds to hear echo.
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A ball is falling at terminal velocity. Terminal velocity occurs when the ball is in equilibrium and the forces are balanced.
Which free body diagram shows the ball falling at terminal velocity?
Answer:
Terminal velocity occurs when the frictional force of air counteracts the gravitational force of gravity.
In Second image, Both forces are equal and therefore is the correct answer
A motorist driving a 1172-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.00 s. Ignoring friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.
The average mechanical power in watts that the engine must supply during this time interval is 58600 watts.
CALCULATION:-
The work done on an object by means of a net pressure equals the change in kinetic energy of the object:
W = KEf - KEi
W = 1/2m(vf² - vi²)
=1/2*1172*[30²-20²]
=293000 JOULE
Power is the rate at which work is performed. it's miles the paintings/time ratio. Mathematically, it's far computed the use of the following equation.
Power = Work/time
P = W / t
=293000/5
=58600 joule
Whilst pressure acts upon an object to cause a displacement of the object, it's miles said that work became accomplished upon the item. The kinetic energy of an object is the strength that it possesses due to its movement.
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What information is needed to calculate the gravitational force of an object? (1 point)
the mass of the two objects
O the distance between the two objects
the mass of the object and the planet's gravitational acceleration
O the mass of the object subtracted from the distance between the object and the planet's core
Answer:
C
Explanation:
the mass of the object and the planet’s gravitational acceleration
Answer:
1)the mass of the object and the planet’s gravitational acceleration
2)2.6 times less force
3)The Earth has a greater gravitational attraction than the Moon.
4)980 N
5)The force would need to be greater, so they would not perform as well.
I did it and have a 5/5 100%
