If a spring has a natural length of 5 cm and a force of 30 n is required to maintain the spring stretched to a length of 9 cm, find the spring constant.

A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.7 m/s2. (a) if the tension in the cord is 63 n, what is the lamp's mass? (b) what is the cord's tension when the elevator ascends with an upward acceleration of 1.

Why does the moon go through phases?

Complete the passage to explain how the first law of thermodynamics describes what happens to heat added to or absorbed by a system. The first law of thermodynamics describes how the heat added to a system is conserved.

How old is the universe

Why is random sampling and random assignment in experimental research important?

Describe the position of earth moon and sun during a solar eclipse

What is an output force? a. the force a person applies to a simple machine b. the force a simple machine applies to an object c. the net force on a system d. the applied force on a system

Would iron and carbon from metallic bonds

How many joules does a shortbread cookie have

What happens to frequency when an object is moving towards you?