How have scientists mapped the surface features of Venus?
a. data received from rovers on the surface
b. data received from multiple probes sent to the surface
c. observations made from the Hubble Space Telescope
d. radar imaging by the Magellan spacecraft
e. UV imaging by the Odyssey spacecraft
d
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The half-life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is 105 years
a. True b. False Indicate whether the statement is true or false
Light of wavelength 610 nm is incident on a slit 0.20 mm wide and the diffraction pattern is viewed on a screen that is 1.5 m from the slit. What is the width on the screen of the central maximum?
A) 0.34 cm B) 0.68 cm C) 0.92 cm D) 1.2 cm E) 1.5 cm
Which color of light undergoes the smallest refraction when passing from air to glass?
A) red B) yellow C) green D) violet E) blue.
Note the expression: y = A/x2 . Which statement is most consistent with this expression?
a. y is less than A b. if x is doubled, y is multiplied by a factor of four c. if x is halved, y is multiplied by a factor of four d. y is greater than x