Astronomers need to collect data and observations from distant objects to which it is dangerous for astronauts to travel. Which instrument helps astronomers safety collect samples from distant objects to which they cannot travel? A. Radio Telescope
B. Satellite
C. Space Probe
D. Spectroscope

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

What is a subatomic particle with a negative charge and very little mass?

The flow of electrons from one atom to another is called