Hardness may be defined as the resistance of a material to scratching.

a. True

b. False

Which best describes the current model of the atom? it is similar to the model of the solar system with orbiting planets. it has remained the same for several centuries. it is similar to the model of plum pudding with suspended plums.

Maddie Cat can ride her tricycle at a speed of 3.75 meters per second. How far can she go in 5.0 seconds

The velocity of any wave can be calculated from its frequency and wavelength. How fast (in meters per second) is a wave moving if its six waves go by in a second and its wavelength is two meters? A. 1/3 B. 3 C. 8 D. 12

How far is the sun from the moon?

For what type of object is the period-luminosity relation used for determining distances?

A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 425 kV.

Match the example to the type of equipment category it fits best in. A Gym bag, workout clothes, hygiene essentials, proper shoes, water, ipod. B Hockey Stick Baseball Glove. Basketball. Pads. Helmet.

Energy transformations in a bouncy house

High voltage power is often carried in wire bundles made up of individual strands. In your initial post to the discussion, discuss the forces on the strands of wire due to the current flowing through them.

The climate of an area is based on A) Rivers and lakes B) natural resources. C) mountain and valleys. D) Precipitation and temperture