A35 gram piece of silver is droped into a container of water. as it cools the silver gives off 180 calories of heat. what is the silvers temperature change?

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s