What is the wavelength of the shortest wavelength light visible to the human eye?
a. 400 nm
b. 4000 nm
c. 7000 nm
d. 700 nm
e. 3×10^8 m
a
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The thermal energy of a block of ice at 0°C melting to a puddle of water at 0°C in a cup at room temperature
A. Increases. B. Decreases. C. Remains the same.
You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.The force on your left palm is __________ the force on your right palm
Fill in the blank(s) with correct word
If the net work W is done on an object is negative, the object's kinetic energy increases by an amount W
Indicate whether the statement is true or false
If you exert 100 J to lift a box in 50 s your power output is
A) 1/4 W. B) 1/2 W. C) 2 W. D) 4 W. E) more than 4 W.