About how fast are molecules in air moving?
A. 1 000 ft/sec
B. the speed of light
C. 9.8 m/sec
D. 9.8 cm/sec
Answer: A. 1 000 ft/sec
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Listed following are some of the distinguishing characteristics of the four Galilean moons of Jupiter. Match each characteristic to the appropriate moon.
A 12 ohm resistor and a 24 ohm resistor are connected in parallel across a 6.0 V battery. The correct statement from the following is
A. the larger current is in the larger resistor. B. the current is the same in each resistor. C. the voltage difference between the ends of each resistor is the same. D. the power dissipated is the same in each resistor.
Can a car be accelerating when its speed is constant?
A. Yes. Velocity has both a magnitude (speed) and a direction. If the direction is changing there is an acceleration. B. No. If speed is constant there is no change so therefore no acceleration. C. No. Acceleration is the rate of change of velocity. If the speed is constant the velocity is not changing. D. Yes. Acceleration and speed are not related, so a constant speed has no effect on acceleration. © 2019 McGraw-Hill Education
A light beam enters water at an angle of incidence of 37°. Determine the angle of refraction
What will be an ideal response?