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A window air-conditioner unit absorbs 9.75×10^4J of heat per minute from the room being cooled and in the same period deposits 1.46×10^5J of heat into the outside air.
Part A What is the power consumption of the unit in watts?
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state
A student in an undergraduate physics lab is studying Archimede's principle of bouyancy. The student is given a brass cylinder and using a triple beam balance finds the mass to be 1.25 kg
suppose that they have same internal energy, which will have a higher temperature: a metal knife in thermal equilibrim with a hot griddle or a 1kg block of ice at -25C or seven 12g ice cubes at -25C.
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
A 120-g mug at 21C is filled with 210g of coffee at 91C. suppose all of the heat lost by the coffee is transferred to the mug, what is the final temperature of the coffee? The specific heat capacity of the mug is 7.8 X 10^2 J/(Kg C)
Determine the smallest thickness of the shaft if the allowable shear stress is ?allow=150MPa and the shaft is restricted not to twist more than 0.08rad
Two narrow paralle slits illuminated by tellow light with a wavelength of \lambda = 600 nm produce fringes with a separation of 0.50 mm on a screen 2m away,
A projectile is launched with an initial speed of 50 m/s at an angle of 35° above the horizontal, What is the projectile's velocity at the highest point of its trajectory
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles
An atom of mass 3.32*10^(-26)kg oscillates in one dimension at a frequency of 10^13Hz, calculate the quantized energy levels
A laser beam strikes one end of a slab of material, Determine the number of internal reflections of the beam before it emerges from the opposite end of the slab
What are the direction and magnitude of the magnetic force the field exerts on the proton.
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