A 2.60 kg ball is dropped from the roof of a building 167.7 m high. While the ball is
falling to Earth, a horizontal wind exerts a
constant force of 11.7 N on the ball.
How long does it take to hit the ground?
The acceleration of gravity is 9.81 m/s
2
.
Answer in units of s.
039 (part 2 of 3) 10.0 points
How far from the building does the ball hit
the ground?
Answer in units of m.
040 (part 3 of 3) 10.0 points
What is its speed when it hits the ground?
Answer in units of m/s.

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Photons with the highest energy have the longest period

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