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A 500.0 g pot of water at room temperature (20.0C) is placed on a stove. How much heat is required to change this water to steam at 100C?
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, what is the coefficient of kinetic friction
The wavelength of an electromagnetic wave is measured to be 4.15 x 10^-6 m. What is the frequency of the wave, What type of EM wave is this
A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t, Estimate the capacitance of the cell ..
A 785 Hz sound wave travels through a gas. If the wavelength of the sound is 0.6 m, what is the speed of sound in the gas
A certain system emits electromagnetic radiation of wavelengths 'lambda'1=310nm, 'lambda'2=207nm and 'lambda'3=124nm. what are the other energy levels
A trombone has an effective length of 160 cm and the speed of sound in air is 345 m/s. Notes are selected by moving a U-shaped tube in or out to change effective length of the trombone.
A river flows at a speed of 12m/s from north to south. A powerboat can move at a constant maximum speed of 23 m/s in still water. find the maximum velocity of the boat traveling upstream
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
A 25-? resistance is connected in series with a 30-mH inductance and a 12-µF capacitor, obtain the power dissipated in the circuit
A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, Find the new angular speed of the student
The speed of a transverse wave on a string is 440 m/s, and the wavelength is 0.13 m. The amplitude of the wave is 1.6 mm. How much time is required for a particle of the string to move through a total distance of 1.0 km?
The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 171 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
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