Coal, gas, and oil are ______________ fuels
a. fossil
b. renewable
c. human-made
d. infinite
a
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Multiple-Object Accelerating Systems: Three boxes rest side-by-side on a smooth, horizontal floor. Their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass in the center. A force of 50 N pushes on the 5.0-kg box, which pushes against the other two boxes. What magnitude force does the 5.0-kg box exert on the 3.0-kg box?
A. 0 N B. 10 N C. 25 N D. 40 N E. 50 N
The Hubble Space Telescope has recently strengthened the case for a subsurface ocean on Ganymede by observing
A) changes in time of auroras surrounding the moon B) a thin atmosphere of water vapor above the surface C) salts on its surface D) jets of water erupting from the surface
A 460-turn solenoid of length 30.0 cm and radius 4.00 cm carries a current of 3.50 A. What is the magnetic field strength inside the coil at its midpoint?What is the magnetic flux through a circular cross-sectional area of the solenoid at its midpoint?
a. 1.02E–5 T/m2 b. 3.05E–6 T/m2 c. 2.49E–7 T/m2 d. 3.39E–5 T/m2
Carbon dioxide forms into a solid (dry ice) at approximately ?157°F. What temperature in degrees Celsius does this correspond to?
a. ?157°C b. ?93°C c. ?121°C d. ?105°C