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what is FrictionWhen we think about friction, there is one more place for energy to go - heat. When you push a book across a table, does the energy of the book change? Not if in the end, it is sitting still at the same height. Where did the energy from the work you did pushing the book across the table go? Into fighting friction, which does work but does not change the total energy of the book. It does no useful work. The energy used fighting friction goes into heat generated where the objects touch, the surface of the book and the surface of the table. Friction always uses up energy, because it always works against motion.
The angular position of a point on the rim of a rotating wheelies given by theta=4.0t -3.0t2 +t3, where theta is in radians and tis in seconds. What are the angular velocities at a
How is transmitter used in fibre optic communication system? Transmitter: This consists of analog to digital interface (driver). There, the input signal is converted within
Relative velocity of a boat in a river flowing at a given velocity horizontally Ans) assume the river to be stopped and measure relative velocity of boat and find angle.
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State concept of Charging by conducting Charging by conducting - transfer of charge among two objects through contact - objects have similar charge
Radar: The term radar is used for radio detection and ranging. Radar having of three types of devices, a transmitter, a receiver and indicator devices. It has very high frequen
When a small size magnet is laid in two uniform magnetic fields and which are at right angles to each other, the magnet comes to rest at an angle Φ with respect to B h like that
Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If
Understand how an Endoscopy used in the invasive surgery. Endoscopy is a minimally invasive diagnostic medical process utilized to assess the interior surfaces of an organ thro
Explain the basic concept of sonar. Basic concept of SONAR: Sonar is based ontpo the echo-sounding technique of ultrasound. While an ultrasonic wave is transmitted by water,
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