The image shows a ship using sonar to locate a school of fish. Which data are used to determine the distance of the ship from th
e fish?
A. The amount of time it takes the sound waves to travel to the fish and back to the boat
B. The number of sound waves the ship emits
C. The amount of time it takes the sound waves to travel from the boat to the fish
D. The number of sound waves that bounce off the fish
A. The amount of time it takes the sound waves to travel to the fish and back to the boat
B. The number of sound waves the ship emits
C. The amount of time it takes the sound waves to travel from the boat to the fish
D. The number of sound waves that bounce off the fish
2 answers:
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Answer:
a) 4458K b) 5048K, c) 6166K, d) 5573K
Explanation:
The temperature of the stars and many very hot objects can be estimated using the Wien displacement law
T = 2,898 10⁻³ [m K]
T = 2,898 10⁻³ /
a) indicate that the wavelength is
Lam = 650 nm (1 m / 109 nm) = 650 10⁻⁹ m
Lam = 6.50 10⁻⁷ m
T = 2,898 10⁻³ / 6.50 10⁻⁷
T = 4,458 10³ K
T = 4458K
b) lam = 570 nm = 5.70 10⁻⁷ m
T = 2,898 10⁻³ / 5.70 10⁻⁷
T = 5084K
c) lam = 470 nm = 4.70 10⁻⁷ m
T = 2,898 10⁻³ / 4.7 10⁻⁷
T = 6166K
d) lam = 520 nm = 5.20 10⁻⁷ m
T = 2,898 10⁻³ / 5.20 10⁻⁷
T = 5573K