Ask question

Ask question

All categories

3 years ago

13

A 32-ounce stack of paper is at a temperature of 65°F. Then the paper is divided into fourths. The amount of thermal energy in e

ach part is about the amount of thermal energy in the original 32-ounce stack of paper.
A. The Same As

B. Four Times

C. One-Fourth

1 answer:

Yakvenalex [24]3 years ago

8 0

C because the stack of paper was divided into 4

You might be interested in

In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocit

ivolga24 [154]

Answer:

$m_{receiver}=115Kg*3.1/(1.6)-115Kg=107.8Kg$

Explanation:

The football players collide in a completely inelastic collision, in other words they have the same velocity after the collision, this velocity has a magnitude V=1.6m/s.

We need to use the conservation of momentum Law, the total momentum is the same before and after the collision, at the initial point the receiver does not have any speed

$m_{tackler}*v_{tackler}=(m_{tackler}+m_{receiver})V$ (1)

We solve in order to find the receiver mass:

$m_{receiver}={m_{tackler}*v_{tackler}/V}-m_{tackler}$

$m_{receiver}=115Kg*3.1/(1.6)-115Kg=107.8Kg$

5 0

3 years ago

An ice skater is spinning at 6.00 rev/s with his moment of inertia being 0.400 kg/m2. Calculate his new moment of inertia if he

labwork [276]

Answer:

New moment of inertia will be $I=1.92kgm^2$

Explanation:

It is given initially angular velocity $\omega =6rev/sec=6\times 2\pi =37.68rad/sec$

Moment of inertia $I=0.4kgm^2$

Angular momentum is equal to $L=I\omega =37.68\times 0.4=15.072kgm^2/sec$

Now angular velocity is decreases to $\omega =1.25rev/sec=1.25\times 2\times 3.14=7.85rad/sec$

As we know that angular momentum is conserved

So $15.072=I\times 7.85$

$I=1.92kgm^2$

So new moment of inertia will be $I=1.92kgm^2$

4 0

3 years ago

How can you produce more power than an excavator?

alina1380 [7]

Just do energy spent divided by time to get your answer. With this we can say a human might be able to!

5 0

3 years ago

Read 2 more answers

Newton's _____ law explains why my hands hurt when I clap loudly

Basile [38]

Newtons third law (inertia) is to blame

3 0

3 years ago

Read 2 more answers

Please help me I am desperate this is due now

elena55 [62]

Answer:

Distance travelled is 7 meters and the displacement is 3 meters

7 0

3 years ago

Read 2 more answers