Radioactive isotopes of an atom are:

a. more scarce

b. more stable

c. less stable

d. more abundant

4) Jessica and Martin start riding their bicycles towards each other at 2 pm. At 2 pm, they are 25 miles apart. Jessica rides her bike at a constant rate of 15 miles per hour and Martin rides his at a constant rate of 10miles per hour.

What does fat and atp do for your body?

What are close-toed shoes least likely to provide protection against? A. hydrogen gas produced during a reaction B. spilled water from a hot-water bath C. broken glass from a dropped test tube D. acid leaking from a cracked beaker

Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?

A black hole is a star that has begun to collapse in on itself too little gravity to emit light gotten to the middle of its life become too bright to see

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

Match these terms with their definitions: 1. unit of electrical resistance ampere 2. unit of electromotive force or electrical potential ohm 3. unit for measuring the strength of an electric current volt 4. unit of electrical power watt

In which is momentum conserved: an elastic collision or an inelastic collision?