Physics, 05.03.2022 05:00 davisnaziyahovz5sk
If a projectile is launched at an angle of 30 degrees on level ground, what is the angle with which the projectile impacts the ground?.
Answers: 1
Physics, 21.06.2019 18:10
Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.
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Physics, 21.06.2019 22:00
What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?
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Physics, 22.06.2019 03:00
The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.
Answers: 2
If a projectile is launched at an angle of 30 degrees on level ground, what is the angle with which...
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