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A spider hangs from a strand of silk whose radius is3.6x10-6 m. The density of the silk is 1500kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 210 m/s. decide the mass of the spider.
after flying for 15 min in a wind blowing 42 kmh at an angle of 28deg south of east an airplane pilot is over a town
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another
an aluminum wire having a cross-sectional area of 3.00 multiplied by 10-6 m2 carries a current of 5.00 a. find the
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. determine the tension in the thread
A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.90 m above the floor with a speed of 7.17 m/s, What is the work done on the ball by air resistance, a nonconservative force
A 50cm diameter wheel rolls wothout slipping. The wheel spins 20rad/s. What is the speed of the axle of the wheel
A boat can travel 4.0 m/s in still water. With what speed, relativeto the shore, does it move in a river that is flowing at 1.0 m/s if the boat is headingup stream?
A 378 N, uniform, 1.56 m bar is suspended horizontally by two vertical cables at each end. Cable A can support a maximum tension of 502.0 N without breaking, and cable B can support up to 397.0N. You want to place a small weight on this bar. What is ..
A toy rocket moving vertically upward passes by a 2.1m -high window whose sill is 8.0m above the ground. What was the launch speed of the rocket
A cube of metal has a mass of 0.569 kg and measures 3.09 cm on a side. Calculate the density and identify the metal
An airline pilot pulls her 12.0 kg rollaboard suitecase alongthe groung with a force of 25.0 N for 10.0 m. The handle she pullsmakes an angle of 36.5 degrees with the horizontal. How much workdoes she do over the ten meter distance?
q. a motorcycle is traveling up one side of a hill and down the other side. the crest of the hill is a circular arc
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