Most extrasolar planets are hot Jupiters, discovered in the infrared by the Spitzer Space telescope
Indicate whether the statement is true or false
FALSE
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If the north celestial pole appears on your horizon, what is your latitude?
a. 90° N b. 90° S c. 0° d. 45° N e. The latitude of the observer can not be determined from the information given.
Consider what happens when you jump up in the air. Which of the following is the most accurate statement?
A) It is the upward force exerted by the ground that pushes you up, but this force can never exceed your weight. B) You are able to spring up because the earth exerts a force upward on you which is stronger than the downward force you exert on the earth. C) Since the ground is stationary, it cannot exert the upward force necessary to propel you into the air. Instead, it is the internal forces of your muscles acting on your body itself which propels the body into the air. D) When you push down on the earth with a force greater than your weight, the earth will push back with the same magnitude force and thus propel you into the air.
A large electromagnet has a 22 T magnetic field between its poles. What is the magnetic energy density in that region of space? (?0 = 4? × 10-7 T ? m/
A) A) 30,000 J/cm3 B) 190 J/cm3 C) 88 J/cm3 D) 240 J/cm3
A star's ________ parallax is found by using the spectral lines to estimate the spectral class and luminosity of distant stars
Fill in the blank(s) with correct word