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Q1. A cube of ice is taken from the freezer at -8.7°C and placed in a 97 g aluminium calorimeter filled with 351 g of water at the room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of an ice cube?
Q2. Two positive point charges are held in the place, 0.79 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between charges?
What should be the least kinetic energy in electron volts
What is volume concentration
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
How to find out an initial speed of the bullet
What was the average acceleration throughout the trip
Find the Band Structure and Band Occupancy
What is first order diffraction angle of light
One side of the roof of a building slopes up at 34.0°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up incline. The coefficient of kinetic friction between plastic and roof is ..
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
A 600 turn solenoid, 25 cm long, has a diameter of 2.8 cm. A 10 turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.48 s, what would be the induced emf magnitude in the..
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
If a car travelling at 52 km/h will skid 18 m when its brakes lock, how far-off will it skid if it is travelling at 120 km/h when its brakes lock.
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