By what factor should the length of a simple pendulum be changed in order to triple the period of vibration?

a. 3

c. 9

b. 6

d. 27

How do cells and atoms relate?

A heat engine is operating on a Carnot cycle and has a thermal efficiency of 75 percent. The waste heat from this engine is rejected to a nearby lake at 15 ⁰C at a rate of 14 kW.

John wanted to test which will make his skateboard go the fastest down the hill he tested metal wheels wolden wheels and plastic Wheels He travel 50 meters down the hill and calculated the speed what is the IV and DV of this question

An object has a kinetic energy of 14 Jand a mass of 3.14 kg. how fast is the object moving?

Loggers cut down 2 identical trees. One tree was cut down with a hand saw and one was cut down with an electric saw. Which activity involved more work?

You are riding a bicycle home from school. You average 5 meters per second and you are headed south. What motion can you determine from this data? OA Acceleration OB Distance OC Speed OD Velocity

Spiral galaxy rotation curves are generally fairly flat out to large distances. Suppose that spiral galaxies did not contain dark matter.

How are the functions of the cytoskeleton and the cell wall similar

1. How many electrons does the K level of an atom hold?

A puck traveling at 6 m/s in the + x direction hits a wall and bounces back. Right after the collision with the wall it is traveling in the - x direction at 6 m/s.