A 25.0 g block of copper (specific heat capacity 0.380 J/g.°C) at 88.0 °C is placed into 500.0 g of water initially at 20.0 °C. What is the
change in temperature (in °C) of the copper block? (The specific heat
capacity of water is 4.184 J/g.°C).

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Compare and contrast physical changes with chemical changes.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of