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Work of 600 J is done by stirring and insulated beaker containing 100 gm of water?
What is the internal enery of the system?
What is the change in temperature of the water?
An electron of kinetic energy 1.56 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 21.8 cm. determine the circling frequency
One ton of coal is burned by a power plant every minute. The energy produced when one kg of coal is burned is 3.2 x 10^7 joules. calculate the efficiency of the power plant
q1. while a roofer is working on a roof that slants at 39.0 degrees above the horizontal he accidentally nudges his
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
A spring is attached to the bottom of an empty swimming pool, Determine the percentage of the block's total volume that is hollow
questionsome of properties of a diatomic molecule no can be described in terms of a effortless model in which two atoms
1. For both electricity and heat, the conduction is via electrons, which in a metal are loosely bound, easy flowing, and easy to start moving. 2. Bound electrons do not exist in materials that are good conductors for both heat and electricity.
A baseball is thrown horizontally off a cliff at 17 m/s. How far from the base of the cliff will the baseball hit the ground? The cliff is 81 m high
Richard is driving home to visit his parents. 140 of the trip are on the interstate highway where the speed limit is 65. How many minutes does he save
A 390 g glass coffee cup is at a room temperature of 20?C. It is then plunged into hot dishwater at 80 ?C. how much heat does the cup absorb
q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more
The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find out the effective coefficient of kinetic friction between the wheel and the wet rag.
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