Mushroom rocks are: Group of answer choices

A formed by grains of sand blown across the rocks' surfaces.

B rocks with many mushrooms growing around them.

C formed by wind and water erosion.

D All of the above.

What is the difference between electrically neutral objects and electrically charged objects

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?