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A stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far from the base of the building from which it was thrown as does the other stone. Determine the ratio of the height of the taller building to the height of the shorter building.
a car travels due east with a speed of 30.0 kmh. raindrops are falling at a constant speed vertically with respect to
The plates of a parallel-plate capacitor each have an area of 0.1 m2 and are separated by a 1 mm thick layer of paper. Find the electric field between the plates
An air conditioner draws 12 A at 220 V ac. The connecting cord is copper wire with a diameter of 1.450 mm. how much power does this air conditioner draw
A force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector.
A force F = 200i - 400j + FZ k N, is acting through point A(0,0,0) m.
A 200g block on a 50.0cm long string swings in a circle on a frictionless table at V1=45.0m/s comes to rest in 68.0s. Determine is the tangential acceleration? What is the magnitude of the tangential force?
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
A spring with spring constant 13 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 8.5cm and free. The ball makes 26 oscillations in 18 s seconds.
An excited argon ion in a gas discharge radiates a spectralline of wavelength 450 nm. The transition from the excited to theground state that produces this radiation takes an average time of10^-8 s. What is the inherent width of the spectral lineΔ..
Suppose that suddenly the angular velocity of the moon wa about the earth quadrupled. Assuming conservation of angular omentum the distance between the earth and the moon must have suddenly doubled.
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 413 N and F2 = 357 N. What is the resultant of these two forces
In the fastest measured tennis serve, the ball left the racquet at 73.14 {\rm{ m/s}}. How far did the ball travel during the serve
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