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A 5.7-kg block of aluminum is heated from 30°C to 70°C at atmospheric pressure.
(a) Find the work done by the aluminum.
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(b) Find the amount of energy transferred to it by heat.
(c) Find the increase in its internal energy.
Light with a photon energy of 4.5 eV impinges on the surface of a material with work function 0.4 eV to eject electrons
A parallel plate capacitor consists of 2 square plates 19 cm per side spaced .55 mm apart with only air between them. What is the maximum energy that can stored by the capacitor
When driving west toward the Rocky Mountains, you see a peak 3.7 above the horizon. What is the peak's elevation
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, How fast is the center of mass of the two-stone system moving
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
An atomic spectrum contains a line with a wavelength centered at 450nm, Estimate the lifetime of the excited state
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
A 190 g ball moving at 0.45 m/s in the + x- direction is subject to a 0.15 N force in the - y- direction for 2.5 s. Find the magnitude of the ball's momentum change
To determine the specific heat of an object, a student heats it to 100 in boiling water. She then places the 68.5 object in a 196 aluminum calorimeter containing 135 of water. The aluminum and water are initially at a temperature of 19.5, and are ..
What is the maximum speed the car. A roller-coaster car speeds down a hill past point A where R1 = 8.0 m and then rolls up a hill past point B where R2 = 15.0 m.
A car is driven 225 km west and then 78 km southwest (45 degrees). What is the displacement of car from the point of origin (magnitude and direction).
A basketball star covers 2.6 m horizontally in a jump to dunk the ball. His motion through space can be modelled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02m when he leaves the floor. It reaches a..
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