How do you express 78,000 in scientific notation?

7.8 x 103

7.8 x 104

7.8 x 10-4

A rock of mass m is thrown straight up into the air with initial speed |v0 | and initial position y = 0 and it rises up to a maximum height of y = h.

Para que sirven las leyes físicas

Mechanical energy is a term that is used to describe A. potential energy only. B. kinetic energy only. C. both potential and kinetic energy. D. neither potential nor kinetic energy.

What happens when the temperature of liquid water drops

What term refers to the measure of how much matter is in an object? a. gravity b. mass c. force d. weight?

At the beach, describe where or when you would see wave fronts. How are wave fronts useful to surfers?

How would the moon appear from earth if the moon did not rotate?

Block B has mass 4.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass 2.00 kg and sits at rest on top of block B. The coefficient of static friction between the two blocks is 0.400.

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?