A bulldozer does 45,000 joules of work to push a boulder a distance of 30 meters.

How much force is applied to push the?

According to a rule-of-thumb, each five seconds between a lightning flash and the following thunder gives the distance to the flash in miles.

What is the range of these data? 6,9,2,12,3,5,9

A net force of 100 N is moving a mass with an acceleration of 5 m/s. What is the mass of the object

How do you figure out mechanical energy

What is the function of the commutator in a DC motor? A. to spin the magnet B. to change direct current into alternating current C. to change alternating current into direct current D. to spin the wire coil

A measure of how much pulling, or tension, a material can withstand before breaking is - A. hardness. B. brittleness. C. tensile strength. D. malleability.

How work done against gravity can be expressed?

An electron is acted on by two electric forces, one of 2.7*10-14 N acting upward and a second of 5.8*10-14 N acting to the right. What is the magnitude of the electric field at the electron's location?

A satellite on a Low Earth Orbit is flying with a speed of 7.65 km/s. The vertical component of the Earth's magnetic field is 35.3 μT at the current location of the satellite.

A central air conditioner uses 4.5 kilowatts. It runs for 10 hours over the course of a day. How much energy does the air conditioner use during that day?