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Objects A and B are both positively charged. Both have a mass of 138 g, but A has twice the charge of B. When A and B are placed 18.0 cm apart, B experiences an electric force of 0.110 N. How large is the electric force (in N) on A?
The maximum current in a particular type of solenoid (used in strong B field research) can be as large as 4 kA. what is the maximum size of the magnetic field produced inside the solenoid
An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs at 300 K and 540 K, and which can produce 450 J of work per 1000 J of heat extracted from the hot reservoir. Is his claim feasible.
A pair of flat mirrors meet to form a right angle. A beam of light is incident on one of them at a point 11.5 cm from their point of intersection, find what is the angle of incidence at the first mirror
What would be the radius of curvature of the cornea
A horizontal beam of electrons initially moving at 4.1 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates.
Matthew holds a 50 lbs dumbbell in his hand with his elbow flexed at 90 degrees. His forearm is parallel with the ground. What is the torque created by the dumbbell about the elbow joint
The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.73. At what angle does the ray leave the glass at point B
A gry is an old English measure for length, defined as 1/10 of a line, where line is another old English measure for length, defined as 1/12 inch. A common measure for length in publishing business is a point, defined as 1/72 inch. What is an area..
A 1200 crate slides 15 down a ramp that makes an angle of 30 with the horizontal. how much thermal energy is created
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
You have a spring attached to the bottom of a container. The spring is aligned vertically. The container is filled with water (density 1.0 x 103 kg/m3). How much does the block compress the spring
A 3.85 kg mass attached to a spring oscillates with a period of 0.355 s and an amplitude of 20.5 cm. find the maximum speed of the mass
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