Was Copernicus heliocentric or geocentric

An object accelerates in a direction that is always perpendicular to its motion. what is the effect if any of the acceleration on the objects speed and direction

What is the acceleration of a 100-kg mass that has a force of 50 n acting on it?

All planets revolve around the sun counterclockwise, and most also rotate on their axis counterclockwise true or false

2. A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child continues moving forvard at the original speed. This is an example of A. an action-reaction pair. B.

5. A car accelerates from rest to a speed of 16.7m/s in a time of 9.33 s. What is the acceleration of the car?

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m

A person suffering from anaemia gets tired

Jessica took a Mylar balloon outside on a very hot day. As she waited for the bus the balloon began to get bigger. What is the best explanation of this?