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A speed skater moving across frictionless ice at 8.1{\rm m}/{\rm s} hits a 6.0{\rm m} -wide patch of rough ice. She slows steadily, then continues on at 6.2{\rm m}/{\rm s}. What is her acceleration on the rough ice?
A helicopter flies at a constant altitude towing a mass M of 119 kg. The helicopter and the mass have a horizontal acceleration of 2.54 m/s^2. Ignore air resistance find the tension in the cable.
Two particles with masses m and 3m are moving toward each other along the x axis with the similar initial speeds vi. Particle m is traveling to the left, while particle 3m is traveling to the right.
The electric field near the middle of a long, thin, uniformly charged rod is 3.6x10^4 N/C at a distance of 9.50 cm from the rod. If the rod's length is 17.8 m
A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 400 grams (0.4 kg), at ends of a very low mass rod of length d = .6 m. The barbell spins clockwise with angular speed 20 radians/s.
A total of 26 bright and 26 dark Newton's rings (not counting dark spot at the center) are observed when 540 light falls normally on a planoconvex lens resting on a flat glass surface.How much thicker is the center than edges.
Two small metallic spheres, each of mass 0.20 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere
what is the rate of heat transfer from the plate to the air? If the free stream velocity if the air is doubled and the pressure are increased to 10 atm, what is the rate of heat transfer.
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0682 s, determine the vertical components of the launch velocity.
The equation of a transverse wave traveling in a string is given by y=A sin(k x??t). The tension in the string is 18.0 N, A = 1 mm, k = 22 rad/m, ? = 325 rad/s. What is the linear density of the string. I have the speed of the wave but i cant get ..
What diameter must a helium filled balloon have to float with neutral buoyancy? The mass of the empty balloon is 2.0g
An MP3 player operates with a voltage of 3.7 V, and is using 0.21 W of power. Find the current being supplied by the player's battery
Assume that the sun runs out of nuclear fuel & suddently collapses to form a white dwarf star, with a diameter equal to that of the Earth. Estimate the new rotation period of the Sun.
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