Physics, 22.06.2019 22:00 jayonelijah
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
Answers: 3
Physics, 22.06.2019 05:10
Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?
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Physics, 23.06.2019 02:30
Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.
Answers: 2
Physics, 23.06.2019 03:40
What does every magnet possess? a. iron metal b.strong magnetic field c.repulsion d.north and south poles
Answers: 2
Physics, 23.06.2019 07:00
Why does an object have a different weight o the moon than it does on earth
Answers: 2
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is...
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