Organisms that are found living close to volcanic vents on the ocean floor are referred to as
A) calorophiles
B) hypothermaphiles
C) thermophiles
D) psychrophiles
C
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A plot of the continuous spectra of five different stars is shown in Figure 6-1. Based on these spectra, which of the stars has the lowest temperature?
Which of these is the same for all forms of electromagnetic (E-M) radiation in a vacuum?
A) photon energy B) amplitude C) speed D) wavelength E) frequency
A block of metal weighs 40 N in air and 30 N in water. What is the buoyant force on the block due to the water? The density of water is 1000 kg/m3
A) 10 N B) 30 N C) 40 N D) 70 N
A motorcycle daredevil wants to ride up a 50.0 m ramp set at a 30.0° incline to the ground. It will launch him in the air and he wants to come down so he just misses the last of a number of 1.00 m diameter barrels. If the speed at the instant when he leaves the ramp is 60.0 m/s, how many barrels can be used?
a. 79 b. 318 c. 332 d. 355 e. 402