B.gold also known as the famous gold foil experiment
Answer:
896,000 J
Explanation:
m = 1,120 kg
v = 40 m/s
kinetic energy = mv^2/2 = 1,120 * 40^2/2= 896,000 J
The answer is b. birth defects hope this helps
Answer: The bell has 8550 J energy.
given, There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N
i.e., bell is located at the top of tower, h = 45m
weight of the bell, F = 190 N
workdone by the gravitational force = F.hcos180°
[ gravitational force (i.e., weight ) acting downward while body is located 45m above the ground. so, angle between force and h = 180° ]
workdone by the gravitational force = 190 × 45 × (-1)
= -8550 J
we know, potential energy = negative of workdone
= -(-8550 J) = 8550 J
