A high diver leaves the end of a 5.0-m-high diving board and strikes the water 1.3 s later, 3.0 m beyond the edge of the board. Considering the diver as a particle (neglect her dimensions), determine the following quantities: Her initial velocity v0→ (both magnitude and direction, i. e. the angle θ with the horizontal).

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.

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?