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A person is swinging a ball on a string in a circle above their head. The string is 1.0m long, the ball has a mass of 2.0kg, and its initial angular velocity is 6.0 rad/s. The string is pulled in until it is .5 long. What is the angular velocity of the ball?
A wire 6.70m long with diameter of 2.10mm has a resistance of 0.0250 ohm. Find the resistivity of the material of the wire
What is magnitude of the breaking force
in a football game a kicker attempts a field goal. the ball remains in contact with the kickers foot for 0.0109 s
Since the index of refraction depends on the light's wavelength, the different colors that comprise white light will spread out as they pass through the diamond. The indices of refraction in diamond are 2.410 for red light and 2.450 for blue light..
Three blocks of mass m1=1.0 kg, m2=2.0 kg, and unknown mass m3 are on a frictionless forizontal surface, What is the unknown mass m3
A house has a floor area of 110m 2 and an outside wall that has an area of 27 m 2 . The earth's magnetic field here has a horizontal component of 2.90*10 -5 T that points due north and a vertical component of 3.50*10 -5 T that points straight down..
Obtain an expression for the downward induced velocity behind a wing of span 2s at a point of distance y from the center of span, the circulation around.
At the top a giant 360 swing on the high bar, a 50 kg gymnast has a velocity of 1 m/s and he is 3.5 m about the ground, What is the gymnast's gravitational potential energy
A 60-kg runner expends 295 W of power while running a marathon. determine the mass of bodily fluid (assume it is water) lost per hour
In a crash test, a 1200 kg car slams into a concrete wall at 16.3 m/s and comes to rest in 0.275 s. Find the average stopping force
A 3.0 kilogram particle has a velocity (3.0i -2.5j) m/s, and a 2 kilogram particle has a velocity (1.0i+6.0j) m/s. Obtain the center-of-mass velocity of these particles
A gas consists of 4.65 grams of oxygen and4.65 grams of nitrogen and occupies a volume of 0.50 liter at a temperature of345 K. Discover the number of gas molecules. Discover the partial pressure of the oxygen.
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