9, you are piloting a helicopter which is man vertically at a un

you reach 196.00 m,

velocity of 8.50 m/

a) when does th

14.70 m/s. when

a horizontal

b vertically ata uniform velocity of 14.70 m/s

ach 196.00 m, you see barney (uh-oh). a la

1. a large object is projected with a horizon

city of 8.50 m/s from the rising helicopter.

vhen does the ball reach barney's head if he

ad if he is standing in a hole with his head at

level? (7.99 s]

b) where do

have to be horizontally relative to the helicopter's position? (68.0 ml

city when it hits the ground? - 63.7 m/s]

c) what is the vertical velocity when it hits the

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light