Questions from College Physics

Q: A projectile is fired straight upward from the Earth’s surface at the

A projectile is fired straight upward from the Earth’s surface at the South Pole with an initial speed equal to one third the escape speed. (a) Ignoring air resistance, determine how far from the cent...

Q: Two objects attract each other with a gravitational force of magnitude 1

Two objects attract each other with a gravitational force of magnitude 1.00 x 10-8 N when separated by 20.0 cm. If the total mass of the objects is 5.00 kg, what is the mass of each?

Q: Convert (a) 47.0° to radians,

Convert (a) 47.0° to radians, (b) 12.0 rad to revolutions, and (c) 75.0 rpm to rad/s.

Q: A satellite is in a circular orbit around the Earth at an

A satellite is in a circular orbit around the Earth at an altitude of 2.80 x 106 m. Find (a) The period of the orbit, (b) The speed of the satellite, and (c) The acceleration of the satellite.

Q: An artificial satellite circling the Earth completes each orbit in 110 minutes

An artificial satellite circling the Earth completes each orbit in 110 minutes. (a) Find the altitude of the satellite. (b) What is the value of g at the location of this satellite?

Q: A satellite of Mars, called Phoebus, has an orbital radius

A satellite of Mars, called Phoebus, has an orbital radius of 9.4 x 106 m and a period of 2.8 x 104 s. Assuming the orbit is circular, determine the mass of Mars.

Q: A 600-kg satellite is in a circular orbit about Earth

A 600-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth’s mean radius. Find (a) The satellite’s orbital speed, (b) The period of its revolution, and (c) The gravit...

Q: A comet has a period of 76.3 years and moves

A comet has a period of 76.3 years and moves in an elliptical orbit in which its perihelion (closest approach to the Sun) is 0.610 AU. Find (a) The semimajor axis of the comet and (b) An estimate of t...

Q: A synchronous satellite, which always remains above the same point on

A synchronous satellite, which always remains above the same point on a planet’s equator, is put in circular orbit around Jupiter to study that planet’s famous red...

Q: (a) One of the moons of Jupiter, named Io

(a) One of the moons of Jupiter, named Io, has an orbital radius of 4.22 x 108 m and a period of 1.77 days. Assuming the orbit is circular, calculate the mass of Jupiter. (b) The largest moon of Jupit...