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, 22.06.2019 05:10
What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics
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Physics, 22.06.2019 06:00
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 12:00
Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?
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Physics, 22.06.2019 17:00
Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?
Answers: 2
Acamera takes a properly exposed photo with a 4.0 mm diameter aperture and a shutter speed of 1/1000...
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