Hair can be used to measure humidity.

a. True

b. False

A rock falls freely from rest near the surface of a planet where acceleration due to gravity is 4.0 meters per second per second. what is the speed of this rock after it falls 32 meters?

What measurment is used for the diameter of wires

When a boxer is moving away from a punch, the force experienced is reduced because: momentum transfer is reduced. the time of contact is increased. the force is less effective. all of the above

Amy has a mass of 50kg, and she is riding a skateboard traveling 10 m/s. what is her momentum?

5ft to m dimensional analysis

Two waves collide and the temporary combined waves that results is smaller that the original wave. which term describes this interaction? A. destructive interference B. standing wave formation C. diffraction D. constructive interference

What do all types of waves on the electromagnetic spectrum have in common

If the force applied to an object increases while the mass stays the same, the acceleration of the object.

Planetary nebulae are characterized by an emission spectrum consisting of Balmer (hydrogen) emission lines and a pair of strong emission lines at 4959˚A and 5007˚A that were quite mysterious when first seen.

What is the mass of oxygen in an oxygen tank at 20 C if the tank has a volume of 0.20 m3 and the oxygen pressure in the tank is 4.0 105 N/m2 (mass of one mole of one mole of oxygen is 16 g and the universal gas constant is 8.