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A solid sphere rolls down an incline plane without slipping. If the center of mass of the sphere has a linear acceleration of 1.21 m/s2, what is the angle of the incline to the horizontal?
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
A 3.0 kg block slides down a plane inclined200 to the horizontal with a coefficent of kinetic frictionbetween the block and the pane of 0.275. What would the net work be the net work done
a child throws a penny off of the eiffel tower h 324m with a downward velocity of magnitude v0 13 ms. find the speed
A mass of .75 kg oscillates on a light spring, and another .75kg oscillates as the bob of a simple penulum in SHM. If the pendulum length is .3m, what whould be the spring constant of the spring if the periods of oscillation are equal?
A 39.2-kg boy, riding a 2.67-kg skateboard at a velocity of +5.37 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to the sidewalk is 5.52 m/s, 9.72° above the horizo..
q1. in a head-on collision a car stops in 0.28 from a speed of 18. the driver has a mass of 73 and is fortunately
A battery has an emf of 15.0 V. The terminal voltage of the battery is 13.4 V when it is delivering 16.0 W of power to an external load resistor R. What is the internal resistance of the battery.
A cart is propelled over an xy plane with acceleration components ax = 5.4 m/s2 and ay = -2.8 m/s2. In unit-vector notation, what is the velocity of the cart when it reaches its greatest y coordinate
A laser beam has a power of 1 mW and a diameter of 2.257 millimeter. Find how many photons are emitted per second over an area of 1mm^2, λ =632.8 nm
It takes 7.60 ms for the current in and LR circuit to reach 60 percent of its maximum value. Decide the time constant of the circuit.
A slide projector has a converging lens whose focal length is103.00 mm. How far from the lens should the screen be located if a slide is placed 105 mm from the lens? If the slide measures 21.0 mm× 37.0 mm, what are the dimensions (in mm) of its image..
A 18kg child slides down a 2.5m -high playground slide. She starts from rest, and her speed at the bottom is 1.8m/s. What is the change in the thermal energy of the slide
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