Answer:
Newton's third law of motion
Explanation:
Newton's third law of motion: every action has an equal and opposite reaction. Nikolas is using the compressed carbon dioxide to push him on his skateboard. Once the gas is released, it applies force that'll push him in the opposite direction, forward.
Answer:
4.5 km / 450 m
Explanation:
1 hour = 9 km
or, 60 min = 9km
or, 60/2 min = 9/2 km
■ 30 min = 4.5 km
heart plzz and brainliest answer as well
The wire vibrates back and forth between the poles of the magnet.
The frequency of the vibration is the frequency of the AC supply.
Answer: The total rate of heat transfer from the container to its surroundings ignoring radiation is 332.67 W.
Explanation:
Given: Inner diameter = 0.9 m
q = 872 
Now, radii is calculated as follows.

Hence, the rate of heat transfer is as follows.

where,
V = volume of sphere = 
Substitute the values into above formula as follows.

Thus, we can conclude that the total rate of heat transfer from the container to its surroundings ignoring radiation is 332.67 W.