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A) A ball rolling horizontally on a 1.0 m high countertop at 1.0 m/s arrives at the counter edge and rolls off, finally hitting the ground below, at some distance from the base of the counter. Roughly sketch the path of the ball in the air, and paste a picture of it here. Show estimates of the vectors of the ball's velocity at four different points along the path: right at the counter edge, two points where it is falling, and a point just before it hits the ground. Show also on the plot the x and y components of the velocity vectors.
B) For the ball in in previous section, if initially it is at the counter edge, x0 = 0 and y0 = h =1.00 m at t = 0, with the horizontal velocity v0x = 1.00 m/s, what is the time tf when it hits the ground? What is the distance xf from the base of the counter when it hits? Show your formulas for tf and xf, and the numerical result.
Runner A is initially 8.0 mi west of a flagpole and is running with a constant velocity of 7.0 mi/h due east. Runner B is initially 6.0 mi east of the flagpole and is running with a constant velocity of 6.0 mi/h due west. How far are the runners f..
two identical capacitors store different amounts of energy capacitor a stores 1.4 x 10-3 j and capacitor b stores 4.7 x
An explosion breaks an object into two pieces, one of which has 1.80 times the mass of the other. If 10000 J were released in explosion, how much kinetic energy did each piece acquire.
a 5m long ladder weighs 200n rests against a smooth vertical wall with its base on a horizontal rough floora distance
A series RL circuit with L = 3.00 H and a series RC circuit with C = 3.00 μF have equal time constants. If the two circuits contain the similar resistance R.
Assume your car was modified so you could travel through space. At a velocity of 65 mi/hr, and driving non-stop, how long would it take for you to get to.
The men's world record for the shot put, 23.12 m, was set by Randy Barnes of the United States on May 20; 1990.If the shot was launched from 6 ft above the ground at an initial angle of 42degrees, what was its initial speed.
1. How might Xylene be used in a histology laboratory? What would be a suitable alternative?
A grade school student plans to build a 34-power telescope as a science fair project. What focal length is needed for her objective lens
An 860 kilogram race car can drive around an unbanked turn at a maximum speed of 59 meter per second without slipping. Compute the maximum speed if no down force acted on car
A lamp (R = 146 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 122 V line. What is the voltage across the fan
find the phase change undergone by its electric vector if the refractive index of the conductor is n2=n(1+ip)
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