Which star is a supergiant?

A. Pollux

B. Deneb

C. North Star (Polaris)

D. Sirius B

What appears to emit regular bursts of radio waves

Which will produce a magnetic field? any wire with or without a current a wire formed into a coil a wire carrying a current a wire formed into a single loop

In an experiment, a torque of a known magnitude is exerted along the edge of a rotating disk. The disk rotates about its center. All frictional forces are considered to be negligible.

Determine the deBroglie wavelength for an electron moving at 7.3 x 107 m/sec. A. 1.0 x 10-11 m B. 5.1 x 104 m C. 5.9 x 10-23 m D. 2.9 x 10-7 m

A ball is thrown straight down with a speed of Va2.00 from a building 40.00 meters high. How much S time passes before the ball reaches the ground? a.) - 3.07s b.) - 2.46 s c.) = 2.66s d.) = 9.89s e.) None of the above.

If a cart of 4 kg mass has a force of 8 newtons exerted on it, what is its acceleration?

Why does the liquid thermometer work?

What energy do electrons have when they are farther away from the nucleus?

200 525000 lololo Boat A is 10 km north of a port. Boat B is 5 km east of the same port. Boat A sails in a straight line towards boat B. Work out the bearing on which boat A sails.

Is Li greater than He on the periodic table?