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A 55 kg person riding a bike puts all her weight on each pedal when climbing on a hill. The pedals rotate in a circle of radius 17cm. What is the maximum torque she exerts. How could she exert more torque.
A light ray enters a rectangular glass slab (n = 1.5) at point A at an incident angle theta, what is the index of refraction of the unknown liquid
A solid weighs 300N. Calculate the pressure exerted by the solid when it is kept on a glass surface, if the area of contact is 700cm2 . solve the numerical.
A 3 kg block initially traveling at 5 m/s collides with a 1 kg block (initially at rest) sitting near the base of a hill. how high up the hill do the two blocks slide after the collision
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 49.2 J and a maximum displacement from equilibrium of 0.280 m.
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
Two small charges with a mass of 1.0 g each are connected by 2.0-cm-long insulating rod of negligible mass. What is the dipole moment of the rod?
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature
The coefficient of friction between a certain brass block and a large revolving turntable is μ = 0.24. What is the period of rotation of the turntable
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is flying? Assume that the required force is provided entir..
If 1.00 mol of oxygen is heated at constant pressure of 1.00 atm from 10.0?C to 25.0?C. What is the change of volume of the gas in this process
A Van de Graaff accelerator is essentially a parallel plate capacitor. Such a machine is changed by an electrical potential of 2.5 x 10^6 volts. What is the energy density stored in the field
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