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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Jupiter radiates less heat than it absorbs from the sun
Indicate whether the statement is true or false
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