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What do you mean by the concept of energy in physics? Is the energy has any physical significance in the daily life of a common man? Please explain this concept in easy points
A metal cup has mass 0.12 kg and initial temperature 20 C. Into this cup is poured 0.30 kg of water (specific heat 4190 J/kg-C) , which is initially at temperature 70 C. The final temperature of the cup-water system is 66 C. Assuming no heat is lo..
When a test charge q0 = 6 nC is placed at the origin, it experiences a force of 8 ? 10-4 N in the positive y direction. What is the electric field at the origin
Take the x-axis horizontal + and the +y-axis upward. A skier slides down a 7.5 degree slope with acceleration 1.15m/s/s along slope. Find the components of acceleration
One side of the roof of a building slopes up at 43.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. determine the maximum height the rock reaches above the point where it was kicked
Two particles each have a mass of 7.1 x 10-4 kg. One has a charge of +6.7 x 10-6 C, and the other has a charge of -6.7 x 10-6 C. How fast is each particle moving when the separation between them is one-half its initial value
a hydroelectric turbine generator produces an electric power of 20 mwmegawatts. water enters the turbine penstock at
Two boxes with different masses M1 =0.7 kilogram and M2 =2.8 kilogram are tied together on a friction less ramp surface which makes an angle θ = 27 degree with the horizontal. Find the tension in the rope connecting the two boxes
A ball rolls off a table with a horizontal velocity of 5 m/s If it takes 0.6 secs for it to reach the floor A. What is the verticle componet of the balls velocity just before it hits the floor? (use g= 10 m/s^2) B. What is the horizontal componet ..
Taking the speed of sound to be a convenient 330 m/s, what is the wavelength of sound with frequency of 440 Hz (which is an A on the piano)
computer chips are etched on circular cylinder wafers of thickness 0.60mm that are sliced from a solid cylindrical silicon crystal of length 30cm . If each wafer can hold 100 chips, what is the maximum number of chips that can be produced from one..
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.4790 N when separated by 50 cm, center-to-center. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres r..
The drawing shows an A-shaped ladder. Both sides of the ladder are equal in length. Determine the tension in the crossbar of the ladder
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