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A contact lens is made of plastic by an index of refraction of 1.60. The lens has an outer radius of curvature of +2.07 cm and an inner radius of curvature of+2.56 cm. What is the focal length of the lens?
a man walks westward on ship with a speed of 4km/hr. the ships propeller drives it 15km/hr south. what is the actual speed of the man relative to earth
The amount of internal enrgy needed to raise temperature of .25kg of water by .2 degreesCis 209.3J. How fast must a .25kg baseball travel in order for its kinetic energy to equal this internal energy.
the drive chain in a bicycle is applying a torque of .850 Nm to the wheel of the bicycle. What is the angular acceleration of the wheel
A 70Kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, decide average resistive force exerted on him by the water.
suppose that a particle accelerator is used to move two beams of particles in opposite directions. in a particular
The earth's magnetic field, with a magnetic dipole moment of 8.0×1022A?m2 , is generated by currents within the molten iron of the earth's outer core. What is the current in the current loop
A Coast Guard cutter detects an unidentified ship at a distance of 22.0 km in the direction 15.0° east of north. Find the time required for the cutter to intercept the ship
q1. a cord passes over a weightless and frictionless pulley. masses of 220 g and 389 g are attached to the ends of the
Find the steady-state temperature distribution in a solid cylinder of height 10 and radius 1 if the top and curved surface are held at 0 degrees and the base at 100 degrees.
We did an experiment with newtons third law where we pushed two carts together and measured the force exerted with a computer. We did it with springs in between the carts first, which showed the force of the carts to be equal.
An object executing simple harmonic motion has a maximum speed of 4.9 m/s and a maximum acceleration of 0.70 m/s2. Find the amplitude of this motion
An ambulance moving at 36 m/s sounds its siren whose frequency is 350 Hz. What frequency does a person in the car hear as the ambulance approaches the car
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