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Blocks m1 = 5.7kg and m2 = 1.4kg are attached by a massless string which passes over a massless pulley. They are positioned on a frictionless ramp at angle (theta) = 32.7 degrees. They are released from rest and block m1 falls a distance h = 0.75m. How fast will block m2 be moving up the ramp when m1 hits the floor?
A flight attendant pulls her 75 N flight bag a distance of 305 m along a level airport floor at a constant velocity. Find the work done by the force of friction on the flight bag
A 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 Volt power supply. Determine the total resistance of the combination
A certain camera has f-numbers that range from 1 to 20. If the focal length of the lens is 51 mm, what is the range of aperture diameters for the camera
two identical twins a and b are each 20 year old when b starts on a round trip to a star 10 light years away. if he
A child in a sled glides along on a flat, snowy surface towards a snowy incline of angle 35.0o with respect to the horizontal. Her speed at a distance 17.5 m from the incline is 24.8 m/s. How far up the hill would she slide
Initially there are 6*10 power 9 radioactive of element w (decay constant 0.173/day) in a sample. As a nucleus of w decays, it converts 2.67*10 power -28 kg of its mass to energy and releases the energy. How much time (in days) is needed for the samp..
A block of mass 3.0 kilogram slides toward the right on a frictionless surface with v0 = 7.5 m/s. Evaluate the position where the block stops
A potential difference of 90 mV exists between the inner and outer surfaces of a 7.5 nm thick cell membrane. What is the electric field inside the cell membrane and inside the actual cell. Explain
A source produces sound waves of time period .001 second and wave length of 20 cm. find the time taken by sound waves to travel a distance of 800 metres.
Suppose that the linear density of the A string on a violin is 8.50 10-4 kg/m, What is the tension in the string
Problem 1: Two point charges are placed 2.0 cm apart. They are fixed in place so that they do not move. a. A small ball of charge 3.0 x 10-9 C is placed at point A. the ball is small enough that it can be treated as a point charge.
A farsighted eye requires lenses with a power of 1.85 diopters to read comfortably from a book that is 25 cm from his eyes. What is his near point without the lenses
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