Ask question

Ask question

All categories

tensa zangetsu [6.8K]

2 years ago

10

63 J of heat are added to a closed system. The initial energy of the system is 58J, and the final internal energy is 93J. How mu

ch work is being done by the system?

1 answer:

Nesterboy [21]2 years ago

7 0

ΔU = Q + W

heat in, Q +
heat out, Q -
does work , W -
work in, W +

93-58 = 63 + W

35 = 63 + W

W = - 28 J (does work/being done by system)

You might be interested in

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits. How

Diano4ka-milaya [45]

Answer: The answer is 3

Explanation:

4 0

3 years ago

The si unit of measurement is a way for scientists to?

Vera_Pavlovna [14]

Have a universal record base. Everyone is able to understand the data compiled since the same measurement systems are being used around the world. This is just to simplify all of the information.

7 0

3 years ago

Two particles A and B start simultaneously from a Point P with velocities 20 m/s and 30 m/s respectively. A and B move with acce

zysi [14]

Answer:

<u>20 m/s</u>

Explanation:

<u>Given</u>

u(A) = 20 m/s
u(B) = 30 m/s
acceleration equal in magnitude but opposite in direction

<u>Solving</u>

Velocity of A at Q = 30 m/s
From, P to Q, <u>Δv(A) = 30 - 20 = +10 m/s</u>
Therefore, velocity of B at Q will be decreased by 10 as it is equal in magnitude but opposite in direction to A
Δv(B) = v(B at Q) - u(B at P)
-10 m/s = v(B at Q) - 30 m/s
v(B at Q) = 30 - 10 = <u>20 m/s</u>

6 0

3 years ago

A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point, which statement is true? (A)

11111nata11111 [884]

Answer:

C. Its velocity is perpendicular to its acceleration

Explanation:

Because acceleration is always perpendicular to the velocity when the velocity will change direction without change it's magnitude

5 0

3 years ago

During an earthquake, where is the greatest motion felt on the surface?

dalvyx [7]

That would be the epicenter.

5 0

3 years ago