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A massless spring with spring constant 20 N/m hangsvertically. A body of mass 0.3 kg is attached to its freeend and then released. Assume that the spring was unstretchedbefore the body was released. Find how far below the initialposition the body descends?
Find the frequency of the resulting motion, assumed tobe simple harmonic.
Find the amplitude of the resulting motion, assumed tobe simple harmonic.
The distance from the eye's lens to the retina is 1.9cm. What is the power of your eye when you read a book that is 35.0 cm from your eye
A star lying 35pc from the Sun has proper motion of 0.2"/yr. calculate the magnitude of its three-dimensional velocity relative to the Sun
A cue ball (mass = 0.165 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.96 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a s..
A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, strikes a slab of fused quartz at an incident angle of 37°. what is the index of refraction of the blue light
Two converging lenses having focal lengths of f1 = 11.1 cm and f2 = 20.0 cm are placed d = 50.0 cm apart. The final image is to be located between the lenses, at the position x = 28.3 cm indicated. How far to the left of the first lens should the o..
A sledge loaded with bricks has a total mass of 18.3 kg and is pulled at constant speed by a rope inclined at 19.7° above the horizontal. What is the mechanical energy lost due to friction
A seagull flies at a velocity of 10.00 m/s straight into the wind, If it takes the bird 18.0 min to travel 6.00 km relative to the earth
A bicycle tire pump has a piston with area 0.44 in. If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump.
A stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
lens forms an image of an object. The object is 16.0 cm from the lens, What is the focal length of the lens? Is the lens converging or diverging
Assume you are a scuba diver preparing for a 30m dive into sea water of density 1025 kg/m3, what volume will be in your lungs at a depth of 15m? at 30m
A cell membrane has a surface area of 1.0 x 10^-7 m^2, a dielectric constant of 5.6 and a thickness of 8.5 nm. How much energy is stored in this capacitor
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