V = u + at where u is initial velocity (15 m/s), a is acceleration (2m/s^2) and t is time (15 seconds)
V = 15 + 2 X 15
V = 45 m/s
Answer:0 J
Explanation:
Given
For first step
change in internal Energy of the system is ![\Delta U_1=222 J](https://tex.z-dn.net/?f=%5CDelta%20U_1%3D222%20J)
Work done on the system ![W_1=-150 J](https://tex.z-dn.net/?f=W_1%3D-150%20J)
For second step
change in internal Energy of the system is ![\Delta U_2=123 J](https://tex.z-dn.net/?f=%5CDelta%20U_2%3D123%20J)
Work done on the system ![W_2=-195 J](https://tex.z-dn.net/?f=W_2%3D-195%20J)
Work done on the system is considered as Positive and vice-versa.
and from first law of thermodynamics
![Q=\Delta U+W](https://tex.z-dn.net/?f=Q%3D%5CDelta%20U%2BW)
for first step
![Q_1=222-150=72 J](https://tex.z-dn.net/?f=Q_1%3D222-150%3D72%20J)
![Q_2=123-195=-72 J](https://tex.z-dn.net/?f=Q_2%3D123-195%3D-72%20J)
overall heat added![=Q_1+Q_2](https://tex.z-dn.net/?f=%3DQ_1%2BQ_2)
For overall Process Heat added is 0 J
Answer:
3200°F
Explanation:
just add two zero's to the end
Answer:
c
Explanation:
Earth has a gravitational force which pulls objects towards the center of the earth.