At apogee, the center of the moon is 406,395 km from the center of Earth and at perigee, the moon is 357,643 km from the center of Earth. What is the orbital speed of the moon at perigee and at apogee? The mass of Earth is 5.98 1024 kg.

Which of the following best describes transverse waves

Which statement about subatomic particles is true? Question 2 options: A. An electron has far less mass than either a proton or neutron. B. Neutrons have no charge and no mass. C. Unlike protons or neutrons, electrons have no mass. D.

Psycholos considered a scal science, yet it has foundations in the natural sciences

Problem 7: In a mass spectrometer, a specific velocity can be selected from a distribution by injecting charged particles between a set of plates with a constant electric field between them and a magnetic field across them (perpendicular to the

A beach ball moving with a speed of 1.31 m/s rolls off a pier and hits the water 0.88 m from the end of the pier

Which equation represents the total energy of a system?

The weight of a 100 N laser printer is spread over 0.5m2. What is the pressure it exerts? A) 50 N/m2 B) 200 N/m2 C) 500 N/m2

Comparing and contrasting ionic and covalent bonds?

Elevation above sea level is called

The train traveled 500 kilometers north to Odessa in 2 hours. What's the train's speed? What is the velocity?