4. A weather satellite orbits the Earth at a height of 560 km. What is the value of gravitational acceleration at the position of the satellite?
[G = 6.67 x 10(power of -11) N m kg(power of -2), mass of the Earth = 5.97 x 10(power of 24) kg, radius of the Earth = 6.37 x 10(power of 6) m]

The movement of electrons between atoms is called an

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.