What is the maximum altitude of the Sun for an observer located at the north pole (90°N)? On what date will the Sun be observed at the maximum altitude?


Maximum altitude is 23.5°, which will be observed at the time of summer solstice
(June 21 ± 2 days).

Physics & Space Science

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An alternate equation for power in an electric circuit is P = IR

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

Energy Conservation With Conservative Forces: A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 24 meters. The same dart is shot up a second time from the same gun, but this time the spring is compressed only half as far (compared to the first shot). How far up does the dart go this time (neglect all friction and assume the spring is ideal)?

A. 6.0 m B. 12 m C. 3.0 m D. 48 m

Physics & Space Science

A battery in a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 3 ohms. What is the voltage of the battery?

Physics & Space Science

What is the momentum of a photon of light that has a frequency of 2.8 × 1014 Hz?

A) 1.5 × 10-28 kg?m/s B) 2.1 × 10-28 kg?m/s C) 4.4 × 10-28 kg?m/s D) 6.3 × 10-28 kg?m/s E) 6.2 × 10-28 kg?m/s

Physics & Space Science