Voltage can exist without

A. current.

B. resistance.

C. a closed circuit.

D. all of these

A solar flare is a very high energy event on the surface of the sun. Which wavelength is best to observe such an event? - visible light -microwaves -xray -infrared

How long does it take from the new moon phase to the first quarter phase

Tishaura decides to do an experiment to determine which type of sock absorbs the most sweat. Which of these describes her doing step two of the inquiry process? A.

A dynamite blast at a quarry launches a rock straight upward, and 2.4 s later it is rising at a rate of 10 m/s. assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.1 s after launch.

Where are large dust clouds predominantly located in the galaxy m51?

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