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A hammer is hanging by a light rope from the ceiling of a bus. The ceiling of the bus is parallel to the roadway. The bus is traveling in a straight line on a horizontal street. You observe that the hammer hangs at rest with respect to the bus when the angle between the rope and the ceiling of the bus is 53°. What is the acceleration of the bus?
An AC voltage of the form ?V = (85 V) sin (330 t) is applied to a series RLC circuit. If R = 42 ?, C = 29 µF, and L = 0.3 H, find the rms current in the circuit
A car of mass 1430 kg traveling at 28 m/s is at the foot of a hill that rises 105 m in 3 km. Find the average power delivered by the car's engine
The frequency and wavelength of a transverse wave on a string are 340 Hz and 0.70 m, respectively. what is the linear density of the string
A 52.0 kg mass attached to a spring oscillates with an amplitude of 2.25 m. The total mechanical energy of the system is 410 J. Find the position of the mass
How much force is needed to increases the velocity of a 5000kg truck from 40 km/h to 70 km/h in 20 s on the horizontal road, What is the change of the total mechanical energy
Calculate the change in specific entropy of air as it is expanded from 2500kPa and 550 degrees C to 120kPa and 65 degrees C
When the sum of all forces acting on a system is zero, the system is said to exist in a state of equillibrium. What is the mass corresponding to this force
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 12rpm in 10.8s. What force is required at the edge
An object moves at a constant velocity of 11 m/s to the southwest for an inverval of 20 s. Halfway through this interval, what is the magnitude of its instantaneous velocity
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
A bowler throws a bowling ball of radius R = 11 cm down a lane. The ball slides on the lane with initial speed vcom,0 = 6.5 m/s and initial angular speed ?0 = 0. How far does the ball slide
Four identical 7 mC charges are placed on a neutrally- charged penny, Determine the resulting potential in the center of the penny due to the four charges
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