The electron microscope is based on the principle that
A) energy is conserved.
B) it is possible to see electrons visually.
C) electromagnetic waves have certain particle-like properties.
D) particles of matter have certain wave like properties.
E) mass is a form of energy.
D
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From center to surface, which of the following correctly lists the interior layers of a terrestrial world?
A) mantle, core, crust B) mantle, crust, core C) core, mantle, crust D) core, crust, lithosphere
A bullet shot straight up returns to its starting point in 10 s. What is the initial speed of the bullet, assuming no air?
A) 9.8 m/s B) 25 m/s C) 49 m/s D) 98 m/s
An asteroid revolves around the Sun with a perihelion 0.5 AU and an aphelion of 7.5 AU. What is its period of revolution?
a. 4 years b. 8 years c. 16 years d. 32 years e. 64 years
Jupiter radiates less heat than it absorbs from the sun
Indicate whether the statement is true or false