Five metal samples, with equal masses, are heated to 200oC. Each solid is dropped into a beaker containing 200 ml 15oC water. Which metal will cool the fastest?

A) aluminum

B) copper

C) gold

D) platinum

On the sun is the corona above the photosphere?

A 150 kg object and a 450 kg object are separated by 0.430 m. (a) find the net gravitational force exerted by these objects on a 39.0 kg object placed midway between them.

Which are two types of mechanical energy electrical and kinetic nuclear and chemical radiant and thermal elastic and gravitational

What are Radio/Tv waves?

If the distance between two objects is decreased to 1/10 of the original distance, how will it change the force of attraction between them?

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)

What is the weight of a 15kg dog on earth?

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.