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A glass window in a home is 0.500 cm thick and has an area of 2.50 m2 . On a cold day, the outside temperature = -10 oC while the inside of the house is 22 oC.
a) What is the rate at which energy flows from the inside of the house to the outside through the window?
b) If this same power were used to heat water at 100 oC and 1 atm., how much water would it boil in one minute?
When photons with 7.2 electron volts of energy strike a certain metal surface, it is found that the stopping potential is 1.7 electron volts. The work function of the metal surface is
A plate of glass by parallel faces having a refractive index of 1.51 is resting on the surface of water in a tank. A ray of light coming from above in air makes an angle of incidence35.5^\circ with the normal to the top surface of the glass.
A point source of light is 70.0 cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water.
A ball is shot from the top of a building with an initial velocity of 20m/s at an angle ? = 42? above the horizontal. What are the x and y components of the initial velocity
Two radio waves are used in the operation of a cellular telephone. To receive a call, the phone detects the wave emitted at one frequency by the transmitter station or base unit. determine the difference between the two frequencies used in the oper..
In 6.00 days the number of radioactive nuclei decreases to one-eight the number present initially. What is the half-life (in days) of the material
question1in the relativistic heavy ion collider in brookhaven ny physicists are attempt to rebuild the conditions of
A helicopter has blades of length 2.5m, extending out from a central hub and rotating at 4.00 rev/s. If the vertical component of the Earth's magnetic field is 50.0μT, what is the emf induced between the blade tip and the center hub?
A vector is 20.9 m long and makes an angle of 58.2° counterclockwise from the y-axis (on the side of the -x-axis). What is the x-component of this vector
A soccer ball is lofted toward the goal from a distance of 9.00 m. It has an initial velocity of 12.7 m/s and is kicked at an angle of 72.0 degrees above the horizontal. (a) When the ball crosses the goal line, how high will it be a..
A point charge Q = 7.80 x 10-6 C is at the center of a conducting spherical shell of radius R = 3.50 cm. The total charge of the shell is -7.80 x 10-6 C. What is the field in the region between the point charge and the shell
a wire 50.0 cm long and under tension 400n is placed near a louderspeaker fed by an audio oscillator of variable
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