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A person in the air above the water in a swimming pool looks straight down into the water (n = 1.33) at a diamond ring that lies on the bottom of the pool. If the image of the ring is 1.20 m below the surface of the water, what is the depth of the water (the distance from the surface of the water to the bottom of the pool)?
a family wishes to purchase a heat pump for their home. The get-it-cheap co. sells a heat pump that has an operating performance 38% of the coefficient of performance of an ideal Carnot heat pump. Compute the overall coefficient of performance for ..
A 3-ft-diameter semicircular channel made of unfinished concrete is to transport water to a distance of 1-m uniformly. determine the minimum elevation difference across the channel
Use Pascal's principle. Given that Fout is 68 lb., the areas of the output and input cylinders are Aout 21 in2 and Ain 6 in2, what is the input force
A 130 block on a frictionless table is firmly attached to one end of a spring with = 40. The other end of the spring is anchored to the wall. A 21 ball is thrown horizontally toward the block with a speed of 6.6.
from the top of a 75m building, a 1.00 kg ball is thrown downwards with initial velocity of 8.00 m/s. what is the mechanical energy lost due to air resistance
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.450mm. What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser
an insulated container is filled with a mix of 400 g of water at 20 C and 60 g of ice at 0 C. assuming negligible heat is exchanged with the container, what is the temperature of the mixture when it reaches thermal equilibrium.
two movers push horizontally on a refrigerator. one pushes due north with a force of 150 n and the other pushes due
Determine the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the system's kinetic energy due to the collision?.
A very long, straight solenoid with a cross-sectional area of 6.15cm squared is wound with 50 turns of wire per centimeter, calculate the average induced emf in the secondary coil
An object with a mass of 48.0 g displaces 605.0 ml of water when it is completely immersed. What is the buoyant force on the mass
A single-turn current loop, carrying a current of 4.41 A, is in the shape of a right triangle with sides 42.1, 94.5, and 103 cm. What is the magnitude of the net force on the loop
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