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A 2 kg box is raised from rest a distance of 3 m by a vertical force of 110 N.
(a) Find the work done by the force.
(b) Find the work done by gravity.
(c) Find the final kinetic energy of the box.
A flute player hears four beats per second when she compares her note to the 523 tuning fork (the note C). She can match the frequency of the tuning fork by pulling out tuning joint to lengthen her flute slightly. What are the three possible value..
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 5.45rad/s and? = 0.835 rad/s3. Calculate the angular acceleration as a function of time
What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension
A 18.2 omegacap.gif resistor, 8.7 omegacap.gif resistor, and a 4.3 omegacap.gif resistor are connected in parallel to a 12 V battery. Determine the current delivered by the battery
The pendulum pictured above has a length of 15.0 cm when it is displaced to the right of the peg, Determine the period for this pendulum close to the surface of the Earth
A pair of earplugs claims to reduce the sound level by 37.1 dB. By what factor is the intensity reduced
A wire is 1.4 m long and 1.3 mm2 in cross-sectional area. It carries a current of 5.8 A, Calculate the conductivity of the material of which this wire is made
Two satellites are in circular orbits around a planet that has radius 9.00x10^6m. What is the orbital speed of this second satellite
A motorist drives north for 35 minutes at 85 km/h and then stops for 15.0 minutes. He then continues north, traveling an additional 130 km in 2 h.
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
The coeficient of friction on a horizontal cicular track, radius 0.25 km, is 0.7. How fast can a car go around skidding out
What is the resolving power of the objective if it is used in an oil-immersion microscope with n oil = 1.45
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