Dams are made wider at the bottom than at the top?

If a stereo has a dial that changes the volume of the sounds the stereo Makes, what is the dial doing?

A 4.9 A current is set up in a circuit for 5.4 min by a rechargeable battery with a 6.0 V emf. By how much is the chemical energy of the battery reduced?

What is the formula for pressure in liquids

In a playground, there is a small merry-go-round of radius 1.20 m and mass 160 kg. Its radius of gyration is 91.0 cm. (Radius of gyration k is defined by the expression I=Mk2.) A child of mass 44.0 kg runs at a speed of 3.

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius

A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where the prevailing pressure is 745 torr. The mercury level in the open arm is 50.

1. f= 2. v= 3. 2 = 4. T= 8 m/s 8 sec 8 Hz 8 m Match the letters with the measurements

A skier speeds down a smooth ski slope which is at an angle of θ = 23° with the horizontal. The mass of the skier is 71 kg. Take the downhill direction to be positive and uphill to be negative.

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.0 m/s in 3.30 s.

Why do skiers often wear sunglasses while they are skiing