If we wanted to increase the internal energy of the system by 10 J, we could...

Physics

1 answer:

bazaltina [42]2 years ago

5 0

Answer:

A. Add 30 J by heating the system and have the system do 20 J of work.

Explanation:

The equation for internal energy is $\Delta U=Q+W$ , where here <em>Q</em> is the heat added to the system (negative if removed from the system) and <em>W</em> is the work done on the system (negative if done by the system). From this is clear that if we add 30J of heat to the system and have it do 20J of work we will have $\Delta U=Q+W=(30J)+(-20J)=10J$ .

You might be interested in

2. Think about the energy that was needed to form the wave in the pool. Where did the energy come from?

patriot [66]

Wave energy is actually a concentrated form of solar power generated by the action of the wind blowing across the surface of the oceans water which can then be used as a renewable source of energy. As the suns rays strike the Earth's atmosphere, they warm it up.

6 0

2 years ago

Which of the following is an example of the Doppler effect?

Oliga [24]

b is your answers in this thread

3 0

2 years ago

How will this substance ease the pain?

erastova [34]

Answer:

There are two main types of OTC pain medicines: acetaminophen (Tylenol) and nonsteroidal anti-inflammatory drugs (NSAIDs). Aspirin, naproxen (Aleve), and ibuprofen (Advil, Motrin) are examples of OTC NSAIDs. If OTC medicines don't relieve your pain, your doctor may prescribe something stronger

7 0

2 years ago

A single loop of wire with an area of 0.0780 m2 is in a uniform magnetic field that has an initial value of 3.80 T, is perpendic

Katarina [22]

Answer:

The induced current is 26.7 mA

Explanation:

Given;

area of the loop, A = 0.078 m²

initial magnetic field, B₁ = 3.8 T

change in the magnetic field strength, dB/dt = 0.24 T/s

The induced emf is calculated as;