What causes objects to move or stay still?

Why is the escape speed for a spacecraft independent of the spacecraft's mass?

The level of closeness between a measured quantity and the actual or standard value is called what?

How many protons are in an element with an atomic number of eight and a mass number of 18

An infinite line of positive charge lies along the y axis, with charge density λ = 1.70 μC/m. A dipole is placed with its center along the x axis at x = 26.0 cm. The dipole consists of two charges ±10.0 μC separated by 2.00 cm.

geography Which nation in the region has seen its growth rate accelerate, while the majority of the region has seen a decline in growth rates?

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. It is initially at position xi=3.37 mxi=3.37 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx=-6.

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. calculate the kinetic energy of this block

Which do you think is the bigger problem among college students-the continued abuse of illegal drugs or the rising abuse of prescription and over-the-counter medications?

A man stands still on a moving walkway that is going at a speed of 0.4 m/s to the east. What is the velocity of the man according to a stationary observer?

Which, if any, of the heat engines violate (s) the second law of thermodynamics?