PHYSICS HIGH SCHOOL

(20 POINTS!) A piece of copper (c = 0.385 ) undergoing a temperature change from 150°C to 225°C absorbs 3,500 joules of energy. What is the mass of the piece of copper? Express the answer to the nearest whole number.

Answers

Answer 1
Answer:

The mass of the piece of copper is equal to 121.2 g when its specific heat capacity is 0.385 J/g°C.

What is the specific heat capacity?

The specific heat capacity can be described as the amount of heat required to raise the temperature in one kilogram of a substance by one-degree Celcius.

The temperature of the material will change whenever the heat is absorbed or lost by it.

Q = mCΔT

Given, the amount of energy transferred, Q = 3500 J

The change in the temperature = 225 - 150 = 75 °C

The specific heat capacity of the copper, C = 0.385 J/g°C

The mass of the piece of copper for the given change in temperatures can be calculated as:

3500 J = m × (0.385 J/g°C) × 75°C

m = 121.2 g

Therefore, the mass of the piece of copper is equal to 121.2 g.

Learn more about specific heat capacity, here:

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Answer 2
Answer:

Answer:

121 on edge 23

Explanation:

Related Questions

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5. An ion consist of 12 electrons and 11 proton. What is the chargeon the ion?
Which of the following is not accurate when describing solids? A. Solids are better conductors of heat than liquids B. The amount of pressure exerted by a solid is solely dependent on its mass. C. Solids with many air pockets are good insulators. D. Molecules in solids are closer together than molecules in liquids.
Which statement BEST describes why warm ocean currents are usually surface currents? A) Warm water is less dense than cold water. B) Ocean tides bring warm water to the surface. C) Warm water contains more salt than cold water. D) Ocean water loses heat to the air at the surface.
a 0.4 kg block rests on a desk. the coefficient of static friction is 0.2. You push the side of the block but do not have a spring scale to measure the force you use. the block does not move. which statement is true about the force of static friction?

Which of the following states of matter is always a good conductor of electricity? solid, liquid, gas, or plasma **:/ Thank you!

Answers

Plasma...I believe is always a good conductor of electricity. I was tempted to say a solid, but not all solids are the same in composition and that goes for liquid and gas as well.

Hopefully this helped and good luck.

A cow standing atop a building in Times Square recalled a funny joke and began to laugh. The uncontrollable laughter caused the cow to fall over the side of the building. He fell for a time period of 3.5 s and landed in a bed of bushes. How fast was the cow moo-ving when he reached the bushes?Which equation should be used to solve the problem?

Answers

Answer:

Vf = 34.3 m/s

1st equation of motion was used to solve.

Explanation:

In order to find the final speed of the cow, when it hits the bushes, we can use first equation of motion:

Vf = Vi + gt

where,

Vf = Final Velocity of Cow = ?

Vi = Initial Velocity of Cow = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = 3.5 s

Therefore,

Vf = 0 m/s + (9.8 m/s²)(3.5 s)

Vf = 34.3 m/s

1st equation of motion was used to solve.

Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall? A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W

Answers

I think it would be B. P.E.=mgh, the mass is 12g, gravitational force is 9.8, and the wall is 2 meters high, so multiply it all and get 235.2.
It would be 24J because there's no energy.

Your shopping cart has a mass of 65 kilograms. In order to accelerate the shopping cart down an aisle at 0.30 m/s2 What force would you need to use or apply to the cart. I don't know how to solve this

Answers

Justin ! Justin ! ! You're in high school Physics. You've done Newton's Laws until you saw them in your sleep. When the wind rustles through the trees, you almost hear it whispering to you "F = M A". Now is the time to use that ! M=65kg. A=0.3m/s^2. F = (65)(0.3)=19.5 newtons.

A ball is thrown upwards and it goes to the height 100 m and comes down 1) What is the net displacement?

Answers

Answer:

o m

Explanation:

The net displacement is 0 because it returns to its original position. The final position and initial position are the same, so displacement is 0.

A bowling ball with a mass of 4.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped at the end of the lane by the ball return. What additional information is required to determine the weight of the bowling ball?a. the speed at which the ball return captured the ball
b. the amount of friction from the bowling lane acting on the bowling ball
c. the acceleration due to gravity acting on the bowling ball
d. the force the bowler applied to the bowling ball

Answers


No additional information is required.  We can calculate,
or simply write down, each of those answers now.

A).  The weight of the ball:

    Weight = (mass) x (gravity) = (4.5 kg) x (9.8 m/s²) = 44.1 newtons

B).  Friction acting on the ball:

       You said that the ball travels with speed of 37 m/s for
       2.5 seconds.  Since the speed of the ball is constant,
       there can't be any friction acting on it.  If there were any,
       then it would lose kinetic energy, and its speed would be
       decreasing.

C).  The acceleration due to gravity is 9.8 m/s² ... IF this story is
        taking place on Earth.

D).  Welll, you caught me.  I can't answer this one without
more information.

The bowler applied force to the ball, and accelerated it from
no speed up to 37 m/s.  In order to figure out the acceleration,
I would need to know how long he spent doing it. 

But wait !  You know what ?  Now that I think of it, we would need
a WHOLE LOT of additional information to answer this part, and
we probably still could not answer it. 

The ball didn't get its entire speed of 37 m/s from the bowler pushing
on it.  We don't put bowling balls down on the floor and accelerate
them with constant force.  We swing them up behind us, and let
gravity accelerate them as they swing down like a pendulum. 
So a lot of the force that accelerates the ball comes from gravity,
the rest comes from the bowler, and the amount is different for
every bowler.

So I'm going to say that d). can't be answered at all, period.

And by the way ... one more comment:

37 m/s is just about 83 miles per hour !  I'm not sure the ball return
is going to stop that thing, and I'd want to get out of the way if I were
you or one of the pins !
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