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What force is necessary to lift athin wire ring 2.5 cm in diameter from water surface at 20 degree celicious ? surface tension at 20 degree celicious is 0.0718 N/m. neglect the weight of ring
A simple pendulum consists of a small object of mass m (the "bob") suspended by a cord of length l of negligible mass. A force F is applied in the horizontal direction (so F is Fi), Determine the work done by the gravitational force on the bob
an elastic cord has an unstreched length of 8.1 m and a cross-section of 2 cm2. if the youngs modulus of the material
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. what is the intensity of the light wave
A 10-kg mass traveling at 40 m/s strikes a plunger attached to a piston. The piston compresses 0.2 kg of air contained in a cylinder. If the mass is brought to rest, compute the maximum rise of temperature in the air.
The drawing shows a rectangular piece of wood. The forcesapplied to corners B and D have the same magnitude of 12 N and aredirected parallel to the long and short sides of the rectangle. Thelong side of the rectangle is twice as long as the short ..
q1. a demented scientist creates a new temperature scale the z scale. he decides to call boiling point of nitrogen 0
A block with mass m = 15kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4234N/m after being compressed the distance x1 = 0.536m from the spring's unstretched length. The floor is frictionless except for a roug..
A plane electromagnetic wave is traveling along the x-axis. If the electric field of the wave has a maximum value of 2 x 10^-6 N/C, find the wave's maximum magnetic field and it's direction
The distance among the objective and eyepiece lenses in a microscope is 22cm. The objective lens has a focal length of 5.5mm. What eyepiece focal length will give the microscope an overall angular magnification of 300?
What least amount heat is needed to bring 20-g of water at 20C to the boiling point and completely boil it away.
A helium nucleus (charge +2e) moves through a potential difference V = ?0.40 kV. Its initial kinetic energy is 3.40 10-16 J. What is its final kinetic energy
The Horseshoe Falls on the Niagara River is about 50 meter high and 800 meter wide. Find what volume of water goes over the falls each second
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