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A baseball has a velocity of 43.6 m/s (97.5 mi/h), directed horizontally, as it is released by a pitcher. The ball's velocity 0.0100 s before it is released is 41 m/s, directed 3.50° above the horizontal. Calculate the ball's instantaneous acceleration just before it is released.
A gun is fired vertically into a 1.9 kg block of wood at rest directly above it. If the bullet has a mass of 21.00 g and a speed of 195 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
Consider four 8 · µC charges placed at the corners of a square, which is 2.1 ·m on a side. The charges on the top are both positive, Find the electric field at the center of the square
compute the linear speed due to the Earth's rotation for a person at a point on its surface located at 40o N latitude (this would be near the Ohio river valley, for instance). The radius of the Earth is 6.40 ξ 106 m. (For comparison, the speed of ..
A more realistic car would cause the wheels to spin in a manner that would result in the ground pushing it forward with a constant force (in contrast to the constant power in Part A). If such a sports car went from zero to 30.0 in time 1.10 , how ..
A tuning fork of unknown frequency makes three beats per second with a fork of frequency 373 Hz, What is the frequency of this fork
Sunlight, with an intensity of 657 W/m2, strikes a flat collecting surface perpendicularly and is totally absorbed. find the force in micronewtons that acts on the surface
Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 6.00 cm/s
A 1.10 kg water balloon is shot straight up with an initial speed of 4.10 m/s. What is the kinetic energy of the balloon just as it is launched
A 400 N stun pilot who has been driving his fighter plane vertically pulls out of the dive by changing her course to a circle in a vertical plane. what is the apparent weight of the pilot at the lowest point
A mass m1 = 5.4 kg rests on a frictionless table and connected by a massless string to another mass m2 = 4 kg, How much work is done by the force F on the two block system
q1.a square coil of wire with 15 turns and an area of 0.40 m2 are placed parallel to a magnetic field of 0.75 t. the
A 500- kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, What was the force due to the wind
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