In the textbook we learned the definition of acceleration, a=δv/δt, and we learned that the cause of acceleration involves net force, where a=f/m.

equate these two equations for acceleration and express, for constant mass, fδt

Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.

True or false graphs must include scales that increase by the same amount

Why do astronauts in the space shuttle weigh less?