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A box with a volume V = 0.03 m3 lies at the bottom of a lake whose water has a density of 103 kg/m3.
(a) How much force is required to lift the box, if the mass of the box is 1510 kg?
(b) How much force is required to lift the box, if the mass of the box is 100 kg?
(c) How much force is required to lift the box, if the mass of the box is 70 kg?
Two mirrors meet at a 133° angle. If light rays strike one mirror at 40°, at what angle ? do they leave the second mirror?what is the value of h.
A uniform solid ball that has a mass of 21.8 g and a radius of 5.1 cm rests on a horizontal surface. What is the angular speed of the ball after impact
A Styrofoam slab has thickness h and density ?s . When a swimmer of mass m is resting on it, Find the area of the slab
Water flows through a Venturi meter with a pipe diameter of 10.0 cm, The U-tube manometer is partially filled with mercury, Find the flow rate of the water in the pipe
A gas with initial conditions (P,V,T)i expands isothermally until the final volume=8.192 times the initial volume, find the ratio of the final pressure to the intial pressure
A 3.00 kg block slides from rest from the bottom of an inclined plane, tilted up at 25 degrees. How fast is the block traveling up the ramp
On a summer morning in July in Houston Texas, the temperature is 80°F. A painter fills a 5.0 gallon aluminum container to the brim with turpentine. How much fluid spilled out of the container
A ranger in a national park is driving at 28.0 mi/h when a deer jumps into the road 225 ft ahead of the vehicle. After a reaction time t, the ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the most reaction time a..
A pot with a steel bottom 7.95 mm thick rests on a hot stove. The area of the bottom of the pot is 0.170 m2. The water inside the pot is 100.0°C at and 0.490 kg are evaporated every 3.00 min.
Laser light with a wavelength of 540 nm is directed through one slit or two slits and allowed to fall on a screen 7.70 m beyond. find the distance between their centers
A device consisting of four heavy balls connected by low mass rods is free to rotate about an axle. It is initially not spinning. what is the angular speed of the device
A 4.7×10?2-T magnetic field passes through a circular ring of radius 2.8cm at an angle of 14?with the normal, Find the magnitude of the magnetic flux through the ring
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