The average distance from Earth to the Sun is 1 AU
a. True
b. False
Indicate whether the statement is true or false
True
You might also like to view...
Climate models support the claim that human activity is causing the currently observed global warming because
A) the models can perfectly predict all aspects of today's climate. B) climate models that include contributions by human activity agree much better with actual data than models that consider only natural factors. C) the models are very sophisticated, with thousands of equations, and this gives scientists confidence that the models must be correct. D) the models predict that warming will continue in the future.
The mean life (time constant) of radon-222 is 5.526 d. If a sample of radon initially contains 6.00 × 108 radon atoms, how many of them are left after 10.0 d?
A) 9.82 × 107 B) 7.67 × 107 C) 8.34 × 108 D) 7.29 × 108 E) 8.56 × 108
The speed of light in a certain medium is 2.2 × 108 m/s. What is the index of refraction of this medium?
A) 1.0 B) 1.2 C) 1.4 D) 1.6 E) 1.8
Which of the following devices make use of the photoelectric effect?
a. digital cameras b. photocopiers c. laser printers d. solar cells e. all of the above