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A string vibrates according to the equation y = 0.5 sin 0.37 x cos 64 t, where x and y are in centimetres and t is in seconds. What is the velocity (in centimetres/second) of the component waves whose superposition can give rise to this vibration?
a circular plastic disk with radius r 2.79 cm has a uniformly distributed charge q 4.69 x106e on one face. a circular
Styrofoam has a density of 300 kg/m^3 . What is the maximum mass that can hang without sinking from a 20.0cm -diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill.
A hospital patient receives a quick 500-cc blood transfusion through a needle with a length of 5.0 cm and an inner diameter of 1.0 mm. if the blood bag is suspended 0.85 m above the height where the blood first starts to flow into the vein, how lo..
A 36 kg girl and a 7.9 kg sled are on the frictionless ice of a frozen lake, 20 m apart but connected by a rope of negligible mass. How far from the girl's initial position do they meet
The polar ice caps contain about 2.48 x 10^19 kilogram of ice. This mass contributes negligibly to the moment of inertia of the earth because it is located at the poles, Find what would be the change in the length of the day
What is the mass of the rim.
A cylindrical nsulated wire of diameter 2.0 mm is tightly wound 200 times around a cylindrical core to form a solenoid with adjacent coils touching each other. When a 0.10 A current is sent through the wire, what is the magnitude of the magnetic fiel..
Two thin beams are joined end-to-end as shown in the figure to make a single object. What is the gravitational torque on the object
a lens that has a focal length of 5.00 cm is used as a magnifying glass.a to obtain maximum magnification and an image
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.900m/s, What is the frequency and amplitude of the wave
a pipe open at both ends has a fundamental frequency of 380 hz when the temperature is 0degc.a what is the length of
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