Answer:
The gravitational force on the elevator = 4500N
Explanation:
The given parameters are;
The force applied by the elevator, F = 4500 N
The acceleration of the elevator = Not accelerating
From Newton's third law of motion, the action of the cable force is equal to the reaction of the gravitational force on the elevator which is the weight, W and motion of the elevator as follows;
F = W + Mass of elevator × Acceleration of elevator
∴ F = W + Mass of elevator × 0 = W
F = 4500 N = W
The net force on the elevator is F - W = 0
The gravitational force on the elevator = W = 4500N.
Answer:
21
Explanation: its actually 20.85 but i guess they round to 21
It’s e 2.0 x 10^-4 because it is a fraction
Answer: b
Explanation: the two pieces will repel as both have obtained a static charge.
Your answer will be (B) - intense pressure.
