A gamma ray is another name for a(n) __________
Fill in the blank(s) with correct word
photon
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What is Astronomy?
What will be an ideal response?
The calories needed to change 10 grams of ice at 0°C to steam at 100°C is
A) 6200. B) 6400. C) 7200. D) 8000. E) none of the above
A magnetic field is directed out of the page. Two charged particles enter from the top and take the paths shown in the figure. Which statement is correct?
a.
Particle 1 has a positive charge and particle 2 has a negative charge.
b.
Both particles are positively charged.
c.
Both particles are negatively charged.
d.
Particle one has a negative charge and particle 2 has a positive charge.
e.
The direction of the paths depends on the magnitude of the velocity, not on the sign of the charge.
If a planet has a radius 20% greater than that of the Earth but has the same mass as the Earth, what is the acceleration due to gravity at its surface?
a. 14 m/s2 c. 8.1 m/s2 b. 12 m/s2 d. 6.8 m/s2