Where are most of the known asteroids found?
A) between the orbits of Mars and Jupiter
B) in the Kuiper belt
C) in the Oort cloud
D) between the orbits of the jovian planets
E) between the orbits of the terrestrial planets
A
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The collision between two cars in an accident is an inelastic collision
a. True b. False Indicate whether the statement is true or false
A laboratory in space has a window so an experiment can be observed from outside. The apparatus has two light sources, red at one end and blue at the other, that can be switched on at the same time. When the light from either source reaches a detector at the midpoint between the sources, a detector light comes on that is red if the red light reaches it first, that is blue if the blue light
reaches first, and is white if both the red and reach the detector at the same time. The experimenter triggers both the blue and the red light sources at the same time, and as a result the white light signals their simultaneous arrival. An observer traveling in a spacecraft at high speed in a direction parallel to the length of the apparatus so as to pass the detector as it turns on during the experiment. What color light does the observer see coming through the window from the detector? a. red b. white c. blue d. This requires the length of the apparatus and observer's speed to answer.
If the force on a body is halved then the acceleration of the body
a. increases by half b. increases by double c. decreases by half d. decreases by double
Light traveling at an angle into a denser medium is refracted
A) toward the normal. B) away from the normal. C) perpendicular to the normal. D) parallel to the normal. E) equally.