03/29/23

Physics EM Waves

A rectangular metal plate measures 0.14 m long and 0.3 m wide. The plate is heated to a temperature of 1,333 K by passing a current through it. Assuming that it behaves like a blackbody, how much... more
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03/14/23

CD Player Disk Problem
A CD player disk starts from rest, and has a positive angular acceleration (it begins to spin quicker and quicker in the counter clockwise direction) of 3.8 radians per second squared, for... more
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03/13/23

Physics Question
An empty storage tank has a volume of 1,900 ft3. What is the buoyant force exerted on it by the air? (Assume the air is at 0°C and 1 atm.)what is the answer in lb?
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11/29/22

law of conservation
you have a light spring which obeys Hooke's law. This spring stretches 2.68 cm vertically when a 3.00 kg object is suspended from it. Determine the following.the force constant of the spring (in... more
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02/12/21

Can someone explain me the logic behind this exercise?
Two objects (35.5 and 18.4 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find the acceleration of the objects and the... more
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12/05/20

cos(a) + 1.341cos(b) = 2 and sin(a) + 1.341sin(b) = 0 are given. What are the a and b ?
the answer should be degree type
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11/23/20

If x varies directly with the square root of y and inversely as the cube of z, and if x=6 when y=9 and z=3, find the values of x when y=16 and z=4
If x varies directly with the square root of y and inversely as the cube of z, and if x=6 when y=9 and z=3, find the values of x when y=16 and z=4
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11/22/20

Physics-Momentum
A 0.010 kg bullet is fired at a 0.50 kg block initially at rest. The bullet, moving with an initial speed of 100.0 m/s emerges from the block with a speed of 75 m/s. What is the speed of the block... more
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11/21/20

What is the gauge pressure at this depth?
The depth of the Pacific Ocean in the Mariana Trench is 36,198 ft. What is the gauge pressure at this depth?
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