A group of a few thousand stars that are loosely held together by gravity is called a

A river is flowing south at a rate of 3 m/s. Steven can roe directly across the river if he aims the raft 30 degrees. What rate is Steven rowing at

What effect does solar wind have on mercury Venus and mars

Does sound travel outside earth's atmosphere in space explain

A cellphone receives its energy from a 3.4 V lithium ion battery. The current used when operating the cellphone is 0.01 A. How many joules of energy does the battery deliver to the cellphone each second.

Is my answer correct? question Scott was watching the electrician install a new light fixture. Scott noticed that when he was finished, he carefully wrapped some wires with plastic caps and black plastic tape.

What is the weight, in n, of an object with a mass of 200 kg at a location where g = 9.6 m/s2. round the final answer to the nearest whole number?

A 1.7 kg book is lying on a 0.77 m - high table. You pick it up and place it on a bookshelf 2.0 m above the floor. how much work does gravity do on the book?

What is the difference between diffusion and osmosis?

Suggest and explain two ways to reduce heat loss through the doors of the house.

If the length of the ramp is 2m and the height of the ramp is 1m, what is the mechanical advantage?