A hydraulic lift raises a 2 000-kg automobile when a 500-N force is applied to the smaller piston. If the smaller piston has an area of 10 cm2, what is the cross-sectional area of the larger piston?
a. 40 cm2
b. 80 cm2
c. 196 cm2
d. 392 cm2
e. 160 cm2
d
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As Earth rotates, circumpolar stars appear to move counterclockwise around the north celestial pole
a. True b. False Indicate whether the statement is true or false
About what percentage of Hubble Deep Field (HDF) galaxies do astronomers find are irregular?
A: 5%. B: 25%. C: 50%. D: 70%. E: 90%.
The red light from a HeNe laboratory laser results from a transition in Ne. Determine the wavelength of the light given off if the energy difference between states is 1.08 eV. (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)
a. 383 nm b. 1840 nm c. 1150 nm d. 1340 nm e. 203 nm
A one-meter-thick lead plate can provide protection from a, b, and radiation
What will be an ideal response?