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You are marooned on a tropical island. Design a telescope from a cardboard map tube and the lenses of your eyeglasses. One lens has a +1.0 m focal length and the other has a +0.30 m focal length. The telescope should allow you to view an animal 100 m from the objective with the final image being formed 1.0 m from the eyepiece. Don't forget to consider which side of the eyepiece the final image must form and whether the final image is a real image or virtual image.
Determine the required distance between lenses.
The manufacturers of a particular brand of car conduct head-on collision tests and find that in the absence of a passenger side air bag, What is the average force exerted on the childs head during collision
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.49 m above the bottom of the chute and with an initial speed of 1.55 m/s. How far from the bottom of the chute does the toy zebra come to rest
An 79 kg person is parachuting and experiencing a downward acceleration of 2.0 m/s2 shortly after opening the parachute. What upward force is exerted on the open parachute by the air
a proton has an initial speed of 4.0 105 ms. a what potential difference is required to bring the proton to rest? b
A rotating wheel requires2.90s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
A 12.0-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.2 m/s, determine the rotational kinetic energy about its center of gravity
Two blocks of mass m and 75 kg are connected via a light cord over a massless, frictionless pulley as shown in the attached figure. If the 75 kg block starts 2.0 m above the floor and takes 3.0 s to reach the floor when released from rest, what..
Ships A and B leave port together. For the next two hours, ship A travels at 35.0mph in a direction 80.0 degree west of north while the ship B travels 10.0 degree east of north at 30.0mph. What is the speed of ship A as seen by ship B
Without pushing himself with his poles, a skier glides down a slope 13.5degrees below the horizontal. If the force of friction is not significant, what is his acceleration?
a popular method of distributing music used to be on disks that had a radius of about 0.3m and spun at a constant angular velocity of about pi radians per second. Find the tangential velocity at the inner and outer edges
A 0.27-m-thick sheet of ice covers a lake. The air temperature at the ice surface is -10°C. In five minutes, the ice thickens by a small amount. Find the number of millimeters by which the ice thickens
A uniform magnetic field points everywhere in the vertical direction but is changing at a rate dB/dt = k with k > 0 constant. Find the maximum induced emf in a circular conducting loop
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