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A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is applied to the box to pull it up the incline. The applied force makes an angle of 10.0 degrees to the incline and above the incline. If the incline has a coefficient of kinetic friction of 0.100, then the increase in the kinetic energy of the box is:
Freud believed that certain troubling symptoms might be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from.
The plates of a 3.1 nF parallel-plate capacitor are each 0.27 m^2 in area. How far apart are the plates if there's air between them
1. a diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. how many carbon atoms are there
A bungee jumper undergoes simple harmonic motion with amplitude 7.9m and frequency 0.110Hz. Determine the bungee jumper's velocity
tarzan swings on a 28.0 m long vine initially inclined at an angle of 32.0° with the vertical. what is his speed at the bottom of the swing if he starts from rest
An object is placed in front of a converging lens in such a position that the lens (f = 11.6 cm) produces a real image located 22.9 cm from the lens.
Two weights are connected by a very light flexible cord that passes over a 30 frictionless pulley of radius 0.100. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. One weight is 75N and the other is 125 N.
A subway train has a sound intensity level of 90 dB, and a rock band has a sound intensity level of 110 dB. How many times greater is the sound intensity of the band than that of the train
On a hot day, the temperature of a road surface may rise to over 50 degrees C. calculate the net radiation flux from the road to the air
An electric motor can accelerate a Ferris wheel of moment of inertia I = 19500 kg·m2 from rest to 9.4 rev/min in 12.0 s, Determine the torque generated by the motor to bring the wheel to 9.4 rev/min
Two sinusoidal waves of the same period, with amplitudes of 7.3 and 7.60 mm, What is the phase constant of the 7.60 mm wave in rads
question1a small plastic sphere of mass m 137 g is attached to a string.there is an electric field of 174 nc directed
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