Many classical Greek astronomers believed Earth could not move because they detected no parallax
a. True
b. False
Indicate whether the statement is true or false
True
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What aspects of the planets orbits are nearly the same for most planets?
A) orbital period and shape B) shape and tilt from the ecliptic C) shape and distance from the Sun D) orbital period and distance from the Sun E) tilt from the ecliptic and distance from the Sun
A 13-V battery is connected in series with a switch, resistor and coil. If the circuit's time constant is 1.2 × 10^?4 s and the final steady current after the switch is closed becomes 2.5 A, what is the value of the inductance?
a. 3.9E–3 H b. 6.2E–4 H c. 2.3E–1 H d. 2.7E–3 H e. 2.3E–5 H
Blue light hitting a red sweatshirt is an example of
A) emission. B) reflection or scattering. C) transmission. D) absorption.
Technology is mainly
A) a body of scientific knowledge. B) a tool of science. C) what is wrong with the world. D) a solution to all of mankind's problems.