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For many years, hitters have claimed that some baseball pitchers have the ability to actually throw a rising fastball. Assuming that a top major leaguer pitcher can throw a 95-mph pitch and impart an 1800-rpm spin to the ball, is it possible for the ball to actually rise? Assume the baseball diameter is 2.9 in. and its weight is 5.25 oz.
When DNA absorbs a sufficiently energetic photon it can break bonds, and reactions can happen that lead to cancer. Show by a calculation why ultraviolet light exposure is a cancer risk and explain your reasoning.
Write about the creator, benefits and history of Solar Panel. - Anything relate to Solar Technology and some reference links.
A point charge, q1 = +2C, is placed at the origin (0m,0m), a second point charge, q2 = -3C, is located at (2m, 0m), and a third point charge, q3 = -4C, is located at (0m, 3m)
suppose a spacecraft is sent to study an object somewhere in our milky way galaxy. this spacecraft finds out that the
If a 35.0 N·m torque on a wheel causes angular acceleration 20.0 rad/s2, what is the wheel's rotational inertia
The top of a small hill has a circular (vertical) cross section with an approximate radius of 57 m. What speed limit should be posted
A pitcher claims he can throw a baseball with as much momentum as a 4.00 gram bullet moving with a speed of 1200 m/s. Find what must be its speed if the pitcher's claim is valid
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. find the speed of the lighter box
How would you calculate the coefficient of kinetic friction from average velocity, angle of incline, and mass?
Catapult fires an 800-kg rock with an initial velocity of 100 m/sat a 40° angle from ground. What is the magnitude of the horizontal impulse
If the rms electric field of this light is 18.0{\rm N/C} at a distance of 1.15{\rm m} from the bulb, what is the average total power radiated by the bulb
Suppose each of the object's three dimensions is increased by a factor of 3 without changing the material od which the object is made. By what factor will the density change
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