Gravity and friction are two kinds of

a. inertia

b. forces

c. masses

d. gravity

Newtown third law applies to blank of objects

Sounds of explosions taking place on other planets is not heard by a person on the earth. give reason

A passenger on a bus moving east sees a man standing on a curb. from the passenger's perspective, the man appears to

A spring has a force constant of 310.0 N/m. (a) Determine the potential energy stored in the spring when the spring is stretched 4.11 cm from equilibrium. J (b) Determine the potential energy stored in the spring when the spring is stretched 3.

Which statement best describes the interaction between earths magnetosphere and solar wind

Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of - 0.1 m/s.

The elements that touch the zigzag line ar classified as

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed? A. 25 g B. 100 g C. 75 g D. 50 g

During a transit, a passes in front of its parent star, temporarily decreasing the star's brightness by a small amount.

How much of each food dollar goes to the producer