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A hammer slides down a roof of angle theta (respect to ground). It slides along the roof distance D. As it leaves the roof, a height H above the ground, it has velocity in both directions. Find how far from the base of the building the hammer lands.
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 59-m-diameter, What is the car's speed at the top
An object is being pushed up an inclined plane with a constant force F = 100. N. The plane makes an angle of 30.0° with respect to the horizontal, What is the mass of the object
The flash unit in a camera uses a 9 V battery to charge a capacitor.The capacitor is then discharged through a flash lamp. obtain the capacitance of the capacitor
A 1 pF capacitor is connected in parallel with a 2 pF capacitor, the parallel combination then being connected in series with a 3 pF capacitor. Which capacitor has the greatest charge
The acceleration of gravity is 10 m/s2. What is the acceleration of a 39 kg pail of cement that is pulled upward (not sideways) with a force of 421 N? Answer in units of m/s2.
A 20 Kg loudspeaker is suspended 2.0 m below the ceilling by two cables that are each 30' from vertical . What is the tension in the cables
Two capacitors are connected parallel to each other. Let C1= 3.50?F ,C2 = 5.50?F be their capacitances, Calculate the potential difference across each capacitor
A light meter stick is balanced at the 60 cm mark with a 200-g mass is hung from the 90 cm mark and a 100-g mass is hung from the 10 cm mark, Find the mass (in g) of the ruler
the U.S. five-cent coin, the nickel, has a mass of 5.1 grams, a volume of 0.719 cm^3, and a total surface area of 8.54 cm^2. how much radiant energy per second comes from the nickel
A 5.61-mm-high firefly sits on the axis of, and 10.3 cm in front of, the thin lens A, whose focal length is 6.99 cm. Is this image upright or inverted with respect to the firefly
A ten pound car wheel has a moment of inertia of 0.38 kg m2. What is the wheel's rotational kinetic energy
A face appears in a convex mirror; face is 75% its normal size and appears to be 24cm behind the mirror. How far was the face standing from the mirror
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