Infer whether a planet with active volcanoes would have more craters than a planet without active volcanoes

Charge q1 is placed a distance r0 from charge q2. What happens to the magnitude of the force on q1 due to q2 if the distance between them is reduced to r0/4?

What is the internal heat gain, in kW, from a factory with 20 kW of lighting (surface-mounted), 10 kW of running motors, and 10 people doing light benchwork?

A police car moving at 36.0 m/s is chasing a speeding motorist traveling at 30.0 m/s. The police car has a siren that emits sound at 3550 Hz. What is the frequency that the motorist hears?

A large truck collides head-on with a small car. The car is severely damaged as a result of the collision.

17. (16 pts) You set up a two-slit experiment with a laser that produces light with a wavelength of 600 nm.

The Hubble Space Telescope (HST) orbits 569,000m above Earth's surface. Given that Earth's mass is 5.97 * 10^24 kg and its radius is 6.38 * 10^6 m, what is HST's tangential speed?

What do safety features in a car do to protect us in a collision

Chemical sediments that result from the evaporation of water are

A college student is working on her physics homework in her dorm room. her room contains a total of 6.0*1026 gas molecules. as she works, her body is converting chemical energy into thermal energy at a rate of 125 w.

A uniform, thin, solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. (a) find its moment of inertia for rotation on its hinges. (b) is any piece of data unnecessary