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Two blocks with masses m1 = 3.8 kg and m2 = 5.6 kg are connected by a string that hangs over a pulley of mass M = 2.1 kg and radius R = 0.2 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it has fallen by 0.7 m. Treat the pulley as a disk.
The focal length of a simple magnifier is 7.00 cm. Suppose the magnifier to be a thin lens placed very close to the eye. How far in front of the magnifier must an object be placed if the image is formed at the observer's near point, 25.0 cm in front ..
You have two cups, one with m1 = 0.92 kilogram of water at t1 = 29.76oC and the other with m2 = 2.88 kilogram at t2 = 45.6oC. Evaluate the final temperature of the water
When a 58-g tennis ball is served, it accelerates from rest to a speed of 45 m/s. What is the magnitude of the net force acting on the ball
A 62 kg student is standing atop a spring in an elevator that is accelerating upward at 3.3 m/s^2, By how much is the spring compressed
The time-varying current in an LC circuit where C = 11.5?F is given by i(t) = (1.30 A) sin (1230t), where t is in seconds.
The scalar product of A and B is 40m2 Vector A has a magnitude of 7m and direction 28 degrees west of south. what is the magnitude of B
During normal beating, the heart creates a maximum 3.50 mV potential across 0.290 m of a person's chest, What is the wavelength of the electromagnetic wave
A parallel-plate air-filled capacitor having area 41.0 cm2 and plate spacing 2.70 mm is charged to a potential difference of 360. V. calculate the energy density between the plates
A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 17 cm. what will the image position be
A 8.0 g string, 0.87 m long, is under tension. The string produces a 900 Hz tone when it vibrates in the third harmonic. The wavelength of the tone in air, in SI units is
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. estimate the moon\'s radial acceleration
If the police car accelerates uniformly at 3.00m/s^2 and overtakes the speeder after accelerating for 9.00 s, illustrate what was the speeder's speed?
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