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A tennis ball is given horizontal velocity of 8 m/s when it is hit at a height of 1.8 m above the ground. It is in air for how many seconds?
A planet's moon travels in an approximately circular orbit ofradius 9.0 107 m with a period of 6 h 34 min. Calculate the mass of the planet from this information
A 65ohms resistor, an 8.0uF capacitor, and a 35 mH inductor are connected in a series in an ac circuit. Calculate the impedance for a source frequency of 300Hz
A 95 kilogram scaffold is 7 meter long. It is hanging with two wires, one from each end. Find the tension in the right hand side wire
A hydrogen atom is in the n=8 state. Use your answer to find the electron's de Broglie wavelength
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G, What is the density of the sun
A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 3.2 meters long and 1.6 meters high. A 3.0 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it h..
A 10 cm high object is situated 25 cm in front of a convex mirror that has a radius of curvature of 1.00 102 cm.
A 1500 Kg car takes 45 minutes to climb from an elevationof 1800 m to 2800m, as the car drives along a mountain road. How much work did the car do against gravity
A certain semiconductor device requires a tunneling probability of T=10^-5 for an electron tunneling through a rectangular barrier with a barrier height of Vo=0.4eV. Determine the maximum barrier width
How many stereoisomers are possible for CH2Cl2 provided that the central carbon has a square planar geometry
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. Determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 46 minutes
A light, rigid rod of length l = 1.00 m joins two particles, with masses m1 = 4.00 kg and m2 = 3.00 kg, at its ends. The combination rotates in the xy plane about a pivot through the center of the rod (see figure below). Determine the angular momentu..
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