When did the last mass extinction occur?

How much charge flows from a 6.0 v battery when it is connected across a completely discharged 15.7 μf capacitor?

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

The magnitude of the force that a spring exerts (F) when it is stretched a distance x from its unstressed length is governed by Hooke's law, F = kx.

What conditions, common to most stars including our sun, appear to be necessary in order for fusion reactions to take place?

What is one of the most noticeable effects of the moon on earth?

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.

Give an example of each simple machine