Physics, 27.12.2019 06:31 alexiss7026
Acamera takes a properly exposed photo with a 4.0 mm diameter aperture and a shutter speed of 1/1000 s. if the photographer focuses on the same point, but changes the speed to 1/250 s. what needs to happen to the diameter of the aperture, if it is still properly exposed? a. nothing b. d' = 16 mm c. d'=1.0 mm d. d' = 8.0 mm e. d'=2.0 mm
Answers: 2
Physics, 21.06.2019 21:50
Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?
Answers: 2
Physics, 22.06.2019 06:30
Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?
Answers: 1
Physics, 22.06.2019 08:30
Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.
Answers: 3
Acamera takes a properly exposed photo with a 4.0 mm diameter aperture and a shutter speed of 1/1000...
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