The point of a planet's orbit farthest from the Sun is called the ______________.
Fill in the blank(s) with correct word
[Ques. 2] What is the frequency of yellow-green light that has a wavelength of 550 nm?
[Ques. 3] A neutron has a mass of 1.67 1027 kg. Its de Broglie wavelength is 1.4 1010 m. What is its kinetic energy (in eV)?
a. 4
b. 0.4
c. 0.04
d. 40
e. 0.08
[Ques. 4] When a planet has the same meridian as a star, the planet is said to be in ______________.
Fill in the blank(s) with correct word
[Ques. 5] A sound wave in air travels at a speed of 340 m/s. If the wavelength is 0.100 m, in what range of the sound spectrum is the wave?
[Ques. 6] A neutron has a mass of 1.67 1027 kg. The de Broglie wavelength is 1.4 1010 m. How fast is the neutron going? (in m/s)
a. 3.4 103
b. 2.8 103
c. 3.9 103
d. 2.6 103
e. 1.7 103
[Ques. 7] Kepler's second law of planetary motion gives a relationship concerning equal ______________ in equal periods of time.
Fill in the blank(s) with correct word
[Ques. 8] During a thunderstorm, an observer notes that 10 s elapsed between the lightning flash and the sound of the thunder. What is the approximate distance, in miles, from the observer to the lightning?
[Ques. 9] A helium-neon laser emits red light having a wavelength of 6.4 107 m and a power of 0.5 mW. How many photons are emitted each second?
a. 6.4 1038
b. 1.6 1021
c. 3.2 1025
d. 2.6 1018
e. 1.6 1015
[Ques. 10] The distance between Earth and the Sun is 93,000, 000 miles, or one ______________.
Fill in the blank(s) with correct word
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