What are the two forces that keep a pendulum swinging?

The distance a vehicle travels can be calculated as follows: distance=speed*time For example, if a train travels 40 miles per hour for three hours, the distance traveled is 120 miles.

The bomb calorimeter is tested with a fuel of unknown energy content, and the following observations were recorded: Mass of fuel burnt = 1.25g Mass of water in the calorimeter = 2.75 kg Water temperature before firing = 18.5 degree Celcius.

1. Tonya had a hard time deciding between the Big Burger and the Crispy Chicken sandwiches, her two favorites. She chose the chicken because she had more recently had a burger. What was her opportunity cost?

The cross-section of a pipe has an area of 2.0 cm2. Calculate the flow rate (in grams per second) of a liquid with p=1.0 g/cm3 through the pipe if the flow speed is 42 cm/s. a. 46 g/s c. 80 g/s b. 76 g/s d. 84 g/s

What would happen to temperature on the Earth If the Sun's heat were not distributed throughout the atmosphere?

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?