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A double-convex lens is to be made of a transparent material by an index of refraction of 1.4. One surface is to have twice the radius of curvature of the other and the focal length is to be 50mm. What is the magnitude of the (a) smaller and (b) larger radius?
As a treatment for chronic back pain, a medical patient may be fitted with a device that passes a small electrical current , how many electrons pass through the muscles during one pulse
On a level road, a truck collides head-on with a compact car. The fenders lock and the two cars travel as one unit after the collision. We know that during the collision:
in a game of lawn chess where pieces are moved between the centers of squares that are each 1.61 m on edge a knight is
A bowling ball with a mass of 6.8 kg strikes a stationary pin that has a mass of 1.6 kg. After the collision, the pin flies forward (in the positive x direction) with a speed of 7.3 m/s, and the ball continues forward at 3.2 m/s (in the positive x..
A solid disk of mass m1 = 9.6 kg and radius R = 0.24 m is rotating with a constant angular velocity of ? = 30 rad/s. find the final rotational energy of the rod and disk system
A stone used to grind wheat into flour is turned through 12 revolutions by a constant force of 21.7 N applied to the rim of a 9.1-cm-radius shaft connected to the wheel
Calculate the average induced voltage between the tips of the wings of a Boeing 767 flying at 440 km/h above Golden, Colorado.The downward component of the earth's magnetic field at this placeis 0.7x10-4 T.
The Large Hadron Collider, or LHC, to be completed later this year, accelerates protons around a nearly circular track of circumference 26.66 km to a momentum of up to 3.74e-15 kg m/s, For the same magnetic field as in part (a), what is the momentu..
A solid cube of mass 40kg and edge length .30mrests on a horizontal floor. A person then pushes on the upper edgeof the cube with a horizontal force of magnitude F. At what valueof F will the cube start to tip? Assume the frictional force fromthe flo..
A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, What is the magnitude of the resulting acceleration, If the craft starts from rest
The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
In a 1.31 T magnetic field directed vertically upward, a particle having a charge of magnitude 8.60 uC and initially moving northward at 4.72 km/s is deflected toward the east. Find the magnetic force on the particle
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