The illuminance on a surface is 3.5 lux, and the surface is 2 meters from the light source. What's the intensity of the source?

True or False: The more mass an object has, the faster it will fall.

Name three elements that are good conductors of heat

The coefficient of linear expansion of steel is 12 * 10-6 k-1. what is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 k from winter to summer? a. 1.2 cm b. 1.8 cm c. 1.4 cm d. 2.0 cm e. 1.6 cm

The risk of earthquakes is high along the Pacific coast of the United States because a. there have been no earthquakes there lately. b. serious earthquakes are rare east of the Rockies. c.

A soccer player is running upfield at 10m/s and comes to a stop in 3 seconds facing the same direction. What is his acceleration

If a spacecraft that seems to be motionless in deep space is given some type of quick push, what will happen? A. The spacecraft will not move because it only works on earth. B.

A fast, white water cascade is also known as what?

What is a stack of membranes that packages chemicals

Under what condition (s) will an object be in equilibrium? Notice that equilibrium in physics has a broader definition. (A) Only if it is moving with constant velocity. (B) Only if it is at rest.

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?