Suppose you leave the solar system and arrive at a planet that has the same mass-to-volume ratio as Earth but has 10 times Earth's radius. What would you weigh on this planet compared with what you weigh on Earth?

What are the four Galilean moons of Jupiter?

What is the average distance from the Sun (in astronomical units) of a planet with an orbital period of 45.66 years?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(f)$ Which point has the greater angular acceleration?

A particle moves with a constant speed of $25 \mathrm{~m} / \mathrm{s}$ in a 90-m-radius circle.

$(a)$ What is its angular speed in radians per second about the center of the circle?

A particle moves in a circle of radius $a$ at constant speed $v$. Find the angular speed and the magnitude of the acceleration.

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(d)$ Which point has the greater angular speed?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(a)$ Which point moves the greater distance in a given time?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(g)$ Which point has the greater centripetal acceleration?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(e)$ Which point has the greater tangential acceleration?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(c)$ Which point has the greater speed?

Two points are on a disk that is turning about a fixed axis perpendicular to the disk and through its center at increasing angular velocity. One point is on the rim and the other point is halfway between the rim and the center.

$(b)$ Which point turns through the greater angle?

A 200-kg object and a 500-kg object are separated by 4.00 m. (a) Find the net gravitational force exerted by these objects on a 50.0-kg object placed midway between them. (b) At what position (other than an infinitely remote one) can the 50.0-kg object be placed so as to experience a net force of zero from the other two objects?

Four particles, each carrying a charge of magnitude 4.0 nC, are at the corners of a square that has a side length of 2.0 m. Calculate the potential (relative to zero at infinity) at the center of the square if (a) all four particles are positively charged, (b) three particles are positively charged and one is negatively charged, and (c) two particles are positively charged and two are negatively charged.