Answer:
it can cause wear and tear and reduces efficiency as energy is lost.
Explanation:
The answer is distressing
1 hour = 3600 seconds.
Energy dissipated = I²Rt = 8²×20×3600 = 4608000 J
Answer:
b) Nothing will happen, the sea saw will still be balanced.
Explanation:
b) Nothing will happen, the sea saw will still be balanced.
Reason:-
When two kids are balanced, the sum of torques on the seesaw will be zero.
if each kid, reduces their distances by half, then the torque of each kid will be half and the sum of torque of each on the seesaw will be zero.
Therefore the seesaw is balanced
The statement that is true of cooling down after physical activity is that you should cool down for about 5 to 10 minutes after being physically active.
