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A 38g glass thermometer reads 20.7C before it is placed in 122mL of water. When the water and thermometer come to equilibrium, the thermometer reads 42.2C. What was the original temperature of the water?
in a haynes- shockley experiment the distance between the cross r and a is d0.1m t0.25 milliseconds if the carriers are
The sun's rays are focused, using a lens as a "burning glass." All the visible sunlight entering a lens of radius 2.97 cm is concentrated in a circular spot of radius 1.05 mm. Find the intensity of visible light in the spot if the intensity of visibl..
When the Earth, Moon, and Sun form a right triangle, with the Moon located at the right angle, as shown in the figure , the Moon is inits third-quarter phase.
A solenoid 27.0 cm long and with a cross-sectional area of 0.510cm2 contains 410 turns of wire and carries a current of 70.0 A, Calculate the energy density in the magnetic field if the solenoid is filled with air
A cylindrical shell of radius 7.00 cm and length 2.42 m has its charge uniformly distributed on its curved surface. Find the net charge on the shell
In mid-nineteenth century England horses were often used to pull barges along canals. What is the average power
A 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump.
Suppose 23.8 L of an ideal monatomic gas at a pressure of 2.60 105 kPa is expanded adiabatically (no heat transfer) until the volume is tripled. what is its final temperature after the expansion
Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.5t0.8 - 3.3t + 21, with t ? 0, m in grams, At what time is the water mass greatest
A 2 kg book resting on a flat table requires an applied force of 4 N to make it move. Draw a free body diagram illustrating this situation and find the coefficient of static friction between the book and the table.
The coefficient of linear expansion of a certain solid is 11 × 10^-6/C°. Assuming this solid behaves like most solids, what is its coefficient of volume expansion
Since force is dp/dt, the force due to radiation pressure reflected off of a solar sail can be calculated as 2 times the radiative momentum striking the sail per second. In the vicinity of Earth's orbit around the Sun, the energy intensity of sunl..
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