Wood, plastic, rubber and air are good insulators because A. they conduct charge. B. charge flows easily. C. they don't have free electrons. D. they have low resistance.

When 2 objects collide and stick together this is referred to as

What is the definition magnetism

Societal demands are not a legitimate driving force of scientific endeavor. True of False?

A swimmer swims faster and increases from 80.1m/s to 80.3 m/s during the last 20 seconds. What is the Final Velocity?

A balloon is at a height of 81m and is ascending upwards with a velocity of 12m/s. A body of 2kg weight is dropped from it. If g=10m/s2, the body will reach the surface of the earth in how much time?

A small rectangular block of metal must be a magnet is it a. Aligns itself east west when hung up from the ceiling b. Is attracted towards a magnet c. Is made of steel d. Is repelled by a magnet

As you catch a fast-moving fastball, why is it wise to move yourhand in the direction of the ball's motion? Explain in terms ofwork and energy.

What is the dot product of a = - 2i - 5j and b=i - 4j

A race car driver must average 200 km/hr for four laps to qualify for a race. because of engine trouble, the car averages only 170 km/hr over the first two laps. what average speed must be maintained for the last two laps?

A machine has a mechanical advantage of 5. if 300 newtons of input force is used to produce 3,000 newton meters of work what is the output force and what is the distance over which the work is applied