What part of the thermosphere is electrically charged?

the ionosphere

the hemisphere

the aurora sphere

the troposphere

Is gravity a force that can changed?

How long would it take for a penny to fall from the top of the Empire State Building? The building is 381 meters.

A crate is being lifted into a truck. If it is moved with a 2470 N force and 4850 J of work is done, then how far is the crate being lifted?

If the air inside a balloon exerts a force of 1.5 N on an area of 0.5m^2 what is the pressure inside the ballon 0.5N/m2 1.5N/m2 3N/m2

You and your classmates are asked to consider what would happen to you if earth's gravity was suddenly turned off. one of your classmates says that you would be pushed off earth into space by the centrifugal force exerted on you by earth's rotation.

What is measuring the age of fossils in years called

A wire 0.80m long carrying a current of 3.2A is perpendicular to a 0.15T magnetic field (B field). What is the force on the wire? (Use F=BIL to solve!) Input answer with 3 decimal places (for example: 555) and do NOT include the units! E

A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why this occurred? A) The train ran out of momentum. B) The opposing force of friction stopped the train.

Which describes Ernest Rutherford's experiment? 1. Positive particles are fired at gold foil. Most bounce back, but some pass through. 2. Negative particles are fired at gold foil. Most bounce back, but some pass through. 3.

Max and maya are riding on a merry-go-round that rotates at a constant speed. if the merry-go-round makes 3.5 revolutions in 9.2 seconds, what is its angular speed?