Answer: Idk I think I forgot
Explanation:
Answer:
100 years
Explanation:
10,000 divided by 100 equals 100
Answer:
b-energy is not exchanged
Explanation:
An isolated system is a thermodynamic system in which neither energy nor matter is exchanged with the surroundings.
As such the best statement that will fill the box under an isolated system is that energy is not exchanged.
- In an open system, both matter and energy are exchanged with the surrounding.
- A closed system is one in which energy transfer is permissible but matter is not exchanged.
- Energy cannot be created nor destroyed in any system. They are simply transformed.
What argument does Minow make in his speech?
A. Parents should demand better programs for their children to watch in the evenings.
B. People watch too much television, which leads to boredom and violence.
C. Television executives have a responsibility to provide better programming.
D. The nation's children depend on television to entertain and educate them.
Answer:
20,000 Ns
Explanation:
mass of exhaust gases, m = 50 kg
velocity of exhaust gases, v = 400 m/s
The momentum of a body is defined as the measurement of motion of body. mathematically, it is defined as the product of mass off the body an its velocity.
change in momentum of rocket = final momentum - initial momentum
= m x v - 0
= 50 x 400
= 20,000 Ns
