An orange is thrown vertically upwards at 6.0m/s from a condominium window located 16.0m above the ground. The orange goes up, falls straight back down towards the ground
and lands on the roof of a van 2.40m in height.

a. Determine the maximum height reached by the orange above the ground.

b. Calculate the speed of the orange 1.0s after it has been thrown upwards.
c. How long is the orange in the air?

d. What is the speed of the orange just before it hits the van?

e. If an apple is thrown straight downwards at 3.0m/s from the window, determine if the
apple would hit the van traveling faster, slower or the same speed as the orange.

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.

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.