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In an amusement park "Rocket" ride, cars are suspended from 4.25 m long cables attached to rotating arms at a distance of 6.00 m from the axis of rotation. The cables swing out to an angle of 45o when the ride is operating. Determine the angular speed of rotation for this ride. What would the angular speed be if the angle of the "Rocket" cars were changed to 60o from vertical?
A bicycle racer is going downhill at 12.2m/s when, to his horror, one of his 2.42kg wheels comes off when he is 75.0m above the foot of the hill. How much total kinetic energy does the wheel have when it reaches the bottom of the hill
Calculate the ratio of heating loss in a given length of wire (assumed ohmic) carrying current at 530 kV to when it operates at 120 V
A certain guitar string has a length of 0.7 meters and a linear mass density of 1.2 grams/meter. A tension of 24 Nt. is applied to it. What will be the speed of the wave on the string
A 10.0-kW laser with a beam area of 10.0 cm2 is incident normally on a mirror. Assuming perfect reflection, what is the force due to radiation pressure on the mirror
problem 1two horses pull horizontally on ropes attached to a stump. the two forces texttipvec f1f1vec 1230rm n and
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What is the bullet's flight time
An electron in a 1-D box of length 0.100 nm, Find the energies of the four lowest states that have energies above the ground states
When kicked, the ball leaves the ground with a speed of 29.0 m/s at an angle of 51° to the horizontal. Explain by how much does the ball clear or fall short of the crossbar?
Four charges are located in a plane as follows: q1 = -5 uC at (4,0) m; q2 = -3 uC at (4,4) m; q3 = -4 uC at (0,4) m; q4 = -2 uC at (0,0) m. Find the magnitude and direction of the resultant field at (2,2)
A baking dish is removed from a hot oven and placed on a cooling rack. As the dish cools down to 34° C from 189° C, What was the net radiant power of the baking dish
A large gate weighing 145 N is supported by hinges at the top and bottom of the wooden frame, and is further supported by a wire. What is the sum of the vertical forces on the hinges
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