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Q1. What are the magnitude and direction of the electric field 21.2 cm directly above an isolated 40.7 x 10^-6 C charge?
Q2. A 55 N force is required to keep a 25 kg crate moving at constant velocity. What is the coefficient of kinetic friction between the crate and the floor?
Q3. A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 30 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the backboard? The height of the basket is 3.04 m.
Suppose that you wish to fabricate a uniform wire out of 1.00 g of copper. Assume the wire has a resistance R = 0.700 ?, What will be the length of the wire in µm
the escape speed starting from the surface of the earth is 11.2 km/s(neglecting any effects of the earth's orbital motion, what would be the escape speed from that planet
q1. a wheel 66.0 cm in diameter accelerates uniformly from 211 rpm to 395 rpm in 7.5 s. how far will a point on the
Ice at -10.0 °C and steam at 118 °C are brought together at atmospheric pressure in a perfectly insulated container. find the ratio of the mass of steam to the mass of ice
An open boxcar rolls at a constant speed of 6 ft/sec down a 1.5% slope. Then grain is poured in vertically downward at a rate of 500 pounds per second and at a vertical speed of 30 ft/sec when it impacts the car.
A spherical steel shell with shell thickness 10 mm rolling down the ramp without slipping.assume that the density of aluminum.
A toy train is pushed forward and released at x0=2.0 m with a speed of 2.0 m/s. What is the magnitude of the train's acceleration after its wheel begins to stick
A 2.50 x 10^-6 F capacitor is charged to 754V and a 6.80 x 10^-6 F capacitor is charged to 563V, Determine the potential difference across the second capacitor
If the perceived frequency becomes constant at 440 Hz, what is terminal speed at the paratrooper? Take the speed sound in air to be 343 m/s and assume the paratrooper always remains below the helicopter.
A mass m equals 4 kg on a slanted surface theta equals 30 degrees. A light rigid cord runs from mass m to pully beta equals 1/2 and Mass of pully equals 2 kg which is free to rotate with negligible axial friction.
A thermos contains 159 cm3 of coffee at 93.7 °C. To cool the coffee, you drop two 13.2-g ice cubes into the thermos. What is the final temperature of the coffee
A superhero flies 287 meters from the top of a tall building at an angle of 17 degrees below the horizontal. What is the vertical component of the superhero's displacement? Answer in units of meters. The horizontal is 274.459 meters and the vertical ..
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