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1. A baseball is thrown horizontally at a speed of 43 m/s. When it reaches home plate, what is the horizontal component of its velocity?
2. A baseball is thrown with 33.9 m/s at an angle of 35.4 degree above the horizontal. It is caught at the same height by another player a distance of 38 yards away. What is the speed of the ball, just before it is caught?
Treat a Boron atom as 5 protons at the origin, 2 electrons spread uniformly on a shell (radius 13.2[pm] centered on the origin) , 2 more electrons spread on a shell (radius 105.8[pm] centered on the origin), and its outer electron at x= 211.6 pm.
How much charge is applied to each of the cylinders.
A pair of in-phase stereo speakers is placed side by side, 2m apart. You stand directly in front of one of the speakers, 5m from the speaker. What do you hear.
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe..
A 3.1-cm-tall object is 47 cm in front of a converging lens that has a 11.8 cm focal length. Calculate the image position and height. position cm height cm.
Imagine that we drop a block of mass m from a height h above the comparatively lightweight plate supported by a vertical spring with relaxed length L and spring constant k. From what value of h would we have to drop the block to compress spring to..
Suppose that the separation between two speakers A and B is 4.40 m and the speakers are vibrating in-phase, What is the largest possible distance between speaker B and the observer,
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up
compute the tension in the rope if the gymnast slides down the rope with a downward acceleration of magnitude 1.40 m/s^2 .
A drunk driver in a 1600 kg car plows into a 1500 kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 19 m before stopping. If the effective coefficient of friction is 0.78, how fast was the dru..
Two point charges q1 = 3.40 nC and q2 = -5.50 nC are 0.100m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2. Take an electric potential to be zero at infinity.
An 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs.
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