A rock falls 30 m. Its KE before it strikes the ground is 4,392 J. What is the

mass of the rock?

A. 15 kg

B. 146 kg

C. 1.5 kg

D. 3.0 kg

A string is stretched and fixed at both ends, 2.7 m apart. If the linear density of the string is 0.031 g/cm and the tension is 917 N, what is the fundamental frequency?

What is used to determine the number of a type of atom in a compound based on the chemical name?

Is a magnetic reversal a threat to life on Earth? Whay do you say?

What does a genus have

The size of the gravitational force between two objects depends on their__. frictional force, inertia, masses and the distance between them, Speed and direction

Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.

A set of data is collected from a simple circuit with a 20 resistor and is represented in the table

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?

Give an example of ionic and covalent bond, and explain and make an example for each.