What experimental term is it called when a ruler is dropped to the floor?

What is the centripetal force acting on a child if the centripetal acceleration is 3 m/s2 and the child's mass is 30 kg? 60 N 33 N 90N 10N

Levi observed properties of four different waves and recorded observations about each one in his chart.

In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R: [ I=V/R. ] It's also true that resistance is directly proportional to the length of the wire.

Find the acceleration of an object whose speed changes from 0 m/s to 20 m/s in 1.5 seconds.

An elastic towrope has spring constant 1300 N/m. It's connected between a truck and a 1900-kg car. As the truck tows the car, the rope stretches 55 cm.

Which method would you use to find the volume of an irregular shaped object?

A step up transformer has a primary coil with 100 turns and a secondary coil with 25 turns if the input voltage in the primary coil is 40 volts what is the output voltage reduced to in the secondary coil A) 20 volts B) 35 volts C) 4 volts D) 10

An instrument used to measure atmospheric pressure is called a

A 200-kg boulder is 1000-m above the ground. what is its potential energy?

The law of reflection states that if the angle of incidence is 81 degrees, the angle of reflection is ___ degrees.