The erosion features seen from orbit on the surface of Mars appears to have been formed from
A) running water
B) molten lava
C) wind
D) marsquakes
A
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The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 ?T. What is the magnitude of the electric field for that wave at P? (c = 3.0 x 108 m/s)
A) 636 N/C B) 7.45 µN/C C) 745 N/C D) 5.23 µN/C E) 6.36 µN/C
The three main types of radiation produced by the sun are
A) radio, infra-red, and visible. B) infra-red, visible, and ultra-violet. C) visible, radio, and gamma. D) gamma, visible, and ultra-violet. E) alpha, beta, and gamma.
The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere
a. cyclonic b. convection c. subduction d. none of these
A 600-kg car traveling at 30.0 m/s is going around a curve having a radius of 120 m that is banked at an angle of 25.0°. The coefficient of static friction between the car's tires and the road is 0.300
What is the magnitude of the force exerted by friction on the car? A) 1590 N B) 3430 N C) 7240 N D) 7820 N E) 795 N