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One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this first snowball, you throw a second one at a low angle timed to arrive before or at the same time as the first one. Assume both snowballs are thrown with a speed of 14.6 m/s. The first one is thrown at an angle of 69 with respect to the horizontal.
At what angle should the second snowball be thrown to arrive at the same point as the first?
On a frictionless table, a glob of clay of mass 0.24 kg strikes a bar of mass 1.34kg perpendicularly at a point 0.38m from the center of the bar and sticks to it. If the bar is 1.14 m long and the clay is moving.
A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
A 530.0g bird is flying horizontally at 2.20m/s, not paying much attention, when it suddenly flies into a stationary vertical bar, What is the angular velocity of the bar just after it is hit by the bird
A sinusoidal voltage ?v = (75 V) sin (160t) is applied to a series RLC circuit with L = 10 mH, C = 145 ?F, and R = 44 ?. What is the maximum current in the circuit
A certain automobile engine is performing work at the rate of 28300 W (38 hp) with an efficiency of 23%. At what rate is heat being expelled by the engine
A satellite has a mass of 6000 kg and is in a circular orbit 4.10 x 105 m above the surface of a planet. What is the true weight of the satellite when it is at rest on the planet's surface
In the figure, block 2 (mass 1.10 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 231 N/m. by what distance is the spring compressed
X rays of wavelength 0.0196 nm are directed in the positive direction of an x axis onto a target containing loosely bound electrons. determine the corresponding change in photon energy
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), Determine the radius of the path
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
A satellite in geosynchronous orbit orbits the earth in 24 hours. find the radial velocity and the angular velocity
A copper wire with a diameter of 1.3 mm has a uniform electric field of 0.45 V/m imposed along its entire length. The temperature of the wire is 36°C. What is the current density in the wire
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