A simple model of the hydrogen atom suggests that the electron orbits the proton. What is the

force that keeps the electron in orbit?

A. Electrostatic

B. Gravitational

C. Strong nuclear

D. Centripetal

Let f (x) =, then what is (0) ?

What does a condenser in a coal-burning power plant do? a. cools the steam so it can be converted back to liquid water b. heats the water so it can produce steam c. collects the steam and releases it back to the atmosphere

A meteoroid, heading straight for Earth, has a speed of 14.8 km/s relative to the center of Earth as it crosses our moon's orbit, a distance of 3.84 * 108 m from the earth's center.

A rod (length = 80 cm) with a rectangular cross section (1.5 mm * 2.0 mm) has a resistance of 0.20 Ω. What is the resistivity of the material used to make the rod?

Meteors start to break up in the stratosphere true or false

Consider the following controls in an automobile in motion : gas pedal, brake, steering wheel. what are the controls in this list that cause an acceleration of the car?

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?