If the sun were replaced by a 1-solar-mass black hole, what would be the gravitational pull of the black-hole "sun" on earth?

A book weighs 4 N. When held at rest in your hands, the net force on the book isQuestion 9 options: 0 N. 0.4 N. 4 N. 39 N. none of the above

What are the two forces involved in an interaction called

A car with a mass of 1.50x10^3 kg starts from rest and accelerates to a speed of 18.0m/s in 12.0 s. assume that the force of resistance remains constant 400.0n during this time. what is the average power developed by the car's engine.

A gas powered model airplane has a mass of 2.50 kilograms. A student exerts a force on a cord to keep the airplane flying around her at a constant speed of 18.0 meters per seond in a horizontal, circular path with a radius of 25.0 meters.

Light has wavelength 600 nm in a vacuum. it passes into glass, which has an index of refraction of 1.5. what is the frequency of the light inside the glass

A train travels 80 kilometers in 2 hours, and then 79 kilometers in 4 hours. What is its average speed?

What does it mean when we say science is a cycle?

1) Which is a characteristic of a metal? A) It looks dull. B) It feels brittle. C) It is a good insulator. D) It is a good conductor of electricity. 2)

1:a boy 2 a girl pulling a heavy crate at the same time w/10 unite of force each. What is the net force acting on the object

Animals that can hear ultrasonic sounds are the what