1. Assume that the dunes in a field of barchans sand dunes are moving at an average long-term rate of 30 meters (about 100 feet) a year. How many years does it take a dune to move a distance of 500 meters?

A person is walking in a straight line for 10 s. The person has an initial position that is negative with respect to a chosen origin, and their velocity is also negative during the entire 10 s.

As the current in a coil of wire increased, the magnetic field strength what?

On earth, what is a child's mass if the force of gravity on the child's body is 100 N

Why do you think baseball in referred as "America's past time" A) because it's enormous popularity as a spectator sport B) because the founding fathers liked to play C) Becouse Americans would rather play baseball then work D) none of the above

What animals do u see?

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet