A camera lens is initially set at f/16 for a shutter speed of 1/30 s. If the amount of lighting on the subject is unchanged, and the lens is set at f/5.6, what is the proper shutter speed at this setting?
a. 1/8 s
c. 1/500 s
b. 1/250 s
d. 1/16 s
B
Physics & Space Science
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Pressure: A brick weighs 50.0 N, and measures 30.0 cm × 10.0 cm × 4.00 cm. What is the maximum pressure it can exert on a horizontal surface due to its weight?
A. 1.25 Pa B. 12.5 Pa C. 1.25 kPa D. 12.5 kPa
Physics & Space Science
The Sun's complete classification is G2V
Indicate whether the statement is true or false
Physics & Space Science
A long solenoid (n = 80 turns/cm) carries a current of 70 mA. Determine the magnitude of the magnetic field inside the solenoid.
What will be an ideal response?
Physics & Space Science
A 2.0-?F capacitor that is initially uncharged is charged through a 50-k? resistor. How long does it take for the capacitor to reach 90% of its full charge?
A) 0.90 s B) 2.2 s C) 0.23 s D) 2.3 s
Physics & Space Science