Physics question--what happens at the beginning of every roller coaster ride? (No obvious/joke answers)

You ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale. the reading on the scale is you ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale.

What speed is the surface current near tokyo, japan?

Which of the following is not a negative consequence of upward urban growth? A) pollution B) creation of a "heat island" C) land for growth becomes scarce D) waste management issues E) increased use of surrounding land

A 50-cm3 block of wood is floating on water, and a 50-cm3 chunk of iron is totally submerged in the water. Which one has the greater buoyant force on it?

t's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

A sample of blood is placed in a centrifuge of radius 12.0 cm. The mass of a red blood cell is 3.0 ✕ 10^-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 ✕ 10^-11 N.

A guitar string produces 3 beats/s when sounded with a 352-hz tuning fork and 8 beats/s when sounded with a 357-hz tuning fork.

4. The amount of distance you need to stop the car increases with specu. A. true B. false

What are the three most abundant gases in the dry atmosphere?

What happens when you open a soda? Why?