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A golfer drives her ball from the tee down the fairway in a high arcing shot. When the ball is at the highest point of its flight and why ?
a) its velocity and acceleration are both zero.
b) its velocity is zero buts its acceleration is nonzero.
c) its velocity is nonzero but its acceleration is zero.
d) its velocity and acceleration are both nonzero.
e) insufficient information is given to answer correctly.
A car whose initial speed is 40 m/s undergoes a constant acceleration of -5 m/s2 for 6 s when its brakes are applied. How far does the car travel
Suppose 28.5 kg of 87.5°C water is placed in contact with 28.5 kg of 11°C water. What is the change in heat (in J) of the hot water
what is the smallest value d can have before the string breaks?
Two point charges 1.6cm apart have an electric potential energy -160?J . The total charge is 25nC. What are the two charges
under controlled darened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 506nm, What is the intensity in W/m^2 deleivered to a rod
You bike at 11.5 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone, What frequency is the trombonist producing
Calculate the energy content of 1 kg of natural uranium assuming complete fission. Estimate an average energy per fission. Compare this to the energy in 1 kg of coal (reference all values assumed).
A neon sign requires a 13 kV rms voltage. This is to be obtained from a 220 V rms power supply using a single transformer. Find the required turns ratio for the transformer
A 2560 - ? resistor and a 1.9 - ?F capacitor are connected in series across a generator (60.0 Hz, 120 V). Determine the power delivered to the circuit
Two point charges are on the y-axis. A 6.0 µC charge is located at y = 1.35 cm, and a -2.20 µC charge is located at y = -1.00 cm. (a) Find the total electric potential at the origin. (b) Find the total electric potential at the point having coordi..
question1a small container of water is placed on a carousel inside a microwave oven at a radius of 13.5 cm from the
A portable CD player does not have a power rating listed, but it has a label stating that it draws a maximum current of 231.0 mA. What is the maximum power consumed
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