If the inflation theory is correct, the geometry of the universe is flat and Euclidean
Indicate whether the statement is true or false
TRUE
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Which of the following statements best describes the idea behind the Labeled Release Experiment on board the Viking landers?
A) living organisms in the soil should give off gases when they metabolize nutrients B) soil with living organisms in it should contain organic molecules C) living organisms in the soil should incorporate carbon from atmospheric gases D) radioactive gases should be produced when radioactive nutrients are added to a soil sample
A car travels along the perimeter of a vertical circle (radius = 0.25 km) at a constant speed of 30 m/s. What is the magnitude of the resultant force on the 60-kg driver of the car at the lowest point on this circular path?
A. 0.37 kN B. 0.80 kN C. 0.22 kN D. 0.59 kN E. 0.45 kN
Ten meters away from a long straight wire, the field is 10-4 Tesla. What current flows through the wire?
What will be an ideal response?
A light-emitting diode has a power output of 0.3 W. If 590 nm is the average wavelength of the source, about how many photons are emitted per second? (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, and 1 nm = 10?9 m)
a. 1021 b. 1025 c. 1018 d. 1029