A 10-kg block on a rough horizontal surface is attached to a light spring (force constant = 1.4 kN/m). The block is pulled 8.0 cm to the right from its equilibrium position and released from rest. The frictional force between the block and surface has a magnitude of 30 N. What is the kinetic energy of the block as it passes through its equilibrium position?
a. 4.5 J
b. 2.1 J
c. 6.9 J
d. 6.6 J
e. 4.9 J
B
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a. it is connected to a battery c. a magnet is put into motion near it b. it is put into motion near a magnet d. all of the above
For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body's absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body's absolute temperature according to: ( in meters, T in kelvins) Assume an object is emitting blackbody radiation. A body in a room at
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By combining three oxygen atoms, a/an ________________ layer formed in Earth's atmosphere, which absorbs UV photons
Fill in the blank(s) with correct word
The large axial tilt of Uranus is believed to have been caused by ________ catastrophic event(s), such as collision(s)
Fill in the blank(s) with correct word