A target lies flat on the ground 7 m from the side of a building that is 10 m tall, as shown
below.
The acceleration of gravity is 10 m/s
Air resistance is negligible.
A student rolls a 7 kg ball off the horizontal
roof of the building in the direction of the
target.

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

You can decrease the resistance of a length of wire by