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Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 39 kg, m2 = 39 kg, and m3 = 21 kg. The pulling force is equal to T3 = 50 N. What is the acceleration of the system?
A 15-cm-long metal rod pulled along two frictionless, conducting rails at a constant speed of 3.5 m/s. What is the current induced in the rod
He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633 nm and a power of 0.500 mW spread over a cylindrical beam 1.30 mm in diameter, What is the maximum value of the electric field
A concave shaving mirror has a radius of curvature of 37.8 cm. In the mirror, the image of a pimple on your face is magnified +6 times what it actually is on your cheek
q1. assuming she was dropped from a height of 290 and that superman can accelerate straight upward at 18.0 determine
an 55.0-n crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. the ramp is inclined
A 18 g rifle bullet traveling 230 m/s buries itself in a 3.6 kg pendulum hanging on a 2.8 m long string, evaluate the horizontal component of the pendulum's displacement
At a testing facility, both a rocket and a jet are to be compared on their performance. The jet was tested first. what is the difference between a rocket and a jet
A 5.0 kg block of aluminum isheated at atmospheric pressure so that its temperature increasesfrom 20°C to 38°C. Find the change in internal energy of the aluminum
A bullet with mass 5.44 g is fired horizontally into a 2.103-kg block attached to a horizontal spring. Find the initial speed of the bullet-block system
The top string of a guitar has a fundamental frequency of 310 Hz when it is allowed to vibrate as a whole, along all its 65.0 cm length from the neck to the bridge. what is the new fundamental frequency
A movie camera has a converging lens with a focal length of 80.0 mm. What is the height of the image on the film
A satellite with a mass of 750 kg is in orbit around the earth. It is initially located at the altitude (measured from the earth's surface) of 2.12 x 106 m. It is then moved into a new orbit, with an altitude of 4.25 x 10^6 m (again, measured from..
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