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The only two forces acting on a body have magnitudes F1 and F2 and directions that differ by an angle ? (in radians). If the resulting acceleration has a magnitude a, what is the mass of the body? State your answer in terms of the given variables.
A convex mirror is needed to produce an image that is seven-eighths the size of an object and located 28 cm behind the mirror. What focal length should be specified
When one person was talking in a small room, sound intensity level was 60dB everywhere within the room. Then, there were 14 people talking in similar manner at the same time in the room, what was the resulting sound intensity level.
A portion of a soap bubble appears green ( wavelength = 500 nm invacuum) when viewed at normal incidence in white light. find the two smallest, non-zero thickness for the soap film
Two small charges with a mass of 1.0 g each are connected by a 2.0 cm long insulating rod of negligible mass. What is the dipole moment of the rod
A block of mass 3.0 kg moves along a frictionless track which has a dip 0.7 m below the original level of the track and then a plateau 1.0 m above the original level of the track. What is the velocity at the hight point
A flight attendant pulls her 65N flight bag a distance of 388m along a level airport floor at a constant velocity. The force she exerts is 38 N at an angle of 51° above horizontal.
Determine and sketch all the external forces acting on the chair. Because the chair can be represented as a point particle of mass , draw the forces with their tails centered on the black dot in the middle of the chair.
A 4.98-kg pendulum bob, at a height of 0.720 m above the floor, is released and swings down to the ground, Find how high up the incline the block will slide
When the displacement of a mass on a spring is 0.689 of the amplitude of its oscillation, what fraction of the mass's energy is kinetic energy
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.2mT magnetic field at the center when the current is 1.9A, What will be the diameter of your coil
If a four-engine jet accelerates down the runway at 2 m/s2 and one of the jet engines fails, explain how much acceleration will the other three produce?
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