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You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. The throw and catch each occur 1.0 m above the ground. (Figure 1) Assume the overhang of the roof is negligible, so that you may assume the edge of the roof is 6.0 m from you and 6.0 m from your friend. From the ground to where the roof begins is 3.0 m. The pitch of the roof is 45 degrees and meets the opposite side of the roof above the center of the house. You and your friend are 18.0 m apart making the width of the house 6.0 m. What minimum speed will allow the ball to clear the roof and at what angle should you throw the ball?
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 56 ms. How fast is the center of mass of the two-stone system
The third floor of a house is 10.00 m above street level. How much work is required to move a 170kg refrigerator to the third floor.
Suppose you're skiing up a 20m tall slope at the indicated angle of inclination. What minimum initial speed must you have at the bottom to just make it to the top
A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor
Illustrates the difference between acceleration and velocity
A parachutist with a camera, both descending at a speed of 11 m/s, releases that camera at an altitude of 140 m. Explain how long does it take the camera to reach the ground?
You push on the chair with a force of = 37.0 directed at an angle of 43.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
A proton moves at 4.9x106 m/s in a magnetic field where B = 0.42 T. what force does the proton experience
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo, Describe and explain how the velocity varies with time, and make a plot of Vy against t
A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. What are the charges of the sphere and the rod
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 490 mA of direct current?
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