In a Galilean telescope, the eyepiece is a diverging lens, while the objective lens is a converging lens. This means that:
A. The image that the observer looks at is inverted
B. The image that the observer looks at subtends a larger angle than the object does
C. The image that the observer looks at is virtual
D. The image that the observer looks at is real
C. The image that the observer looks at is virtual
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Which of the following produces greenhouse gases?
a. burning fossil fuel b. digestive processes in cows c. automobile pollution d. all of the above
A solid cylinder of radius R = 1.0 m and mass 10 kg rotates about its axis. When its angular velocity is 10 rad/s, its angular momentum (in kg×m2/s) is
a. 50. b. 20. c. 40. d. 25. e. 70.
Stars are born from the interstellar medium, and aging or dying stars return gas and dust back into the interstellar medium
a. True b. False Indicate whether the statement is true or false
An iron ball and wooden ball of the same size are dropped simultaneously from a tower and reach the ground at the same time. The iron ball has a greater
A) speed. B) acceleration. C) momentum. D) all of the above E) none of the above