A car drives from east to west over a bridge supported at either end by two pillars. The bridge and car weight is 80 tons. One pillar is pushing up with a force of 30 N. What force is applied to the bridge at the other pillar?

Suppose a ball of putty moving horizontally with 1 kg·m/s of momentum collides with and sticks to an identical ball of putty moving vertically with 1 kg·m/s of momentum. what is the magnitude of their combined momentum?

Convert 255 cm to meters, millimeters, and kilometers

What is an extrasolar planet? a. A planet that is considered an "extra," in that it was not needed for the formation of its solar system. b. A planet that is extra large compared to what we'd expect. c. A planet that is larger than the Sun. d.

How would the speed of earth's orbit around the sun change if earth's distance from the sun increased by 4 times? a. it would increase by a factor of 2. b. it would increase by a factor of 4. c. it would decrease by a factor of 2. d.

Smallest unit that consists of at least one atom A. Protons B. Neutrons C. Electrons D. Molecules It's not D.

Which factors will increase the speed of a sound wave in the air?

9. Rank the following from smallest current to largest current. A. A 1200W microwave connected to 110V outlet. B. A 1500W water heater connected to 220V outlet. C. A 100W light bulb connected to 110V outlet. D.

Find the temperature

List 3 ways in which biodiversity is important to humans

A bird has a mass of 0.8 kg and flies at a speed of 11.2 m/s. How much kinetic energy does the bird have?