The image shows the path of a ball from the time it's thrown to the time it lands on the ground. Determine the kind of energy the ball has at each position. (PE stands for gravitational potential energy, and KE stands for kinetic energy.)

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.