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Light that has a frequency of about 5.20 1014 Hz (a wavelength of about 578 nm) appears yellow to our eyes. What is the energy in joules of the photons associated with this light?
A body oscillates with simple harmonic motion according to x = (4.0 m) cos[(2.0pi rad/s)t + pi/3 rad]. At t = 4.50s , What is the phase of the motion
A phonograph record accelerates from rest to 47.4 rpm in 4.00 s. How many revolutions does it go through in the process
An acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 470 Hz. If these harmonics are explained, in order, by cosine waves with amplitudes of 0.710, 0.170, and 0.790, what is the total amplitude of the signal a..
A 6.50 g bullet moving at 726 m/s strikes a 590 g wooden block at rest on a frictionless surface. What is the speed of the bullet-block center of mass
A wire is bent to form a circle whose diameter is 10cm. Find the maximum torque that the magnetic field can exert on the wire
A rotating fan completes 1200 revolutions every minute.Consider a point at the tip of the blade. at a radius of0.15m. Through what distance does the point move in onerevolution
A 240-kg speedboat is negotiating a circular turn (radius = 36 m) around a buoy. During the turn, the engine causes a net tangential force of magnitude 590 N to be applied to the boat. The initial tangential speed of the boat going into the turn is 7..
An automobile accelerates from rest at 20 m/s2 for 20 s. The speed is held constant for 20 s, after which there is acceleration of ( -3 m/s2 ) until the automobile stops. What is the total distance traveled?
A skateboarder of mass 60.1 kg is riding her 3.89-kg skateboard at a speed of 5.21 m/s. She jumps backward off her skateboard, sending the skateboard forward at a speed of 7.53 m/s.
at t 0 an inductor is connected to a 9.0 v battery. at t 2.3 s the current through the inductor is 0.39 a and after
A 13.30 kg crate is pulled by an 181N force (parallel to the incline) up a rough incline. Assume that the incline makes an angle of 31.80° with the horizontal and that the coefficient of kinetic friction is 0.436.
A concave mirror has a focal lenth of 50 cm. How far form the mirror should one's face so that the image is doubled the size of the actual face? Is image real or virtual , upright or inverted?
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