Brass is an alloy made from copper and zinc. A 590 g brass candlestick has an initial temperature of 98.0°C. If 21,100 J of energy is removed from the candlestick to lower its temperature to 6.8°C, what is the specific heat of brass?
A 0.526J/g °C
B 4.012 J/gºC
C 52.59 J/g°C
D 0.392 J/gºC

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?