In what part of our atmosphere do we live?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Ionosphere
E) Exosphere
A
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A car is 200 m from a stop sign and traveling toward the sign at 40.0 m/s
At this time, the driver suddenly realizes that she must stop the car. If it takes 0.200 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign? A) 2.89 m/s2 B) 3.89 m/s2 C) 4.17 m/s2 D) 3.42 m/s2 E) 2.08 m/s2
A string on a guitar is stretched between two points 35.0 cm apart with a tension of 65.0 N. The mass/length of the string is 0.00400 kg/m. The velocity of wave propagation on the string is
A. 128 m/s. B. 198 m/s. C. 210 m/s. D. 273 m/s. E. 305 m/s.
The "hot shot" thermodynamic engine operating between 40°C and 380°C has an efficiency that is 60% of that of an ideal Carnot engine operating between the same temperatures
If the "hot shot" engine absorbs energy at a rate of 60 kW, at what rate does it exhaust energy? A) 36 kW B) 41 kW C) 57 kW D) 60 kW
The cosmological principle is the ultimate extension of the ________ principle; we are note at the center of the solar system, the galaxy, or the universe
Fill in the blank(s) with correct word