Physics, 14.09.2019 10:30 preciosakassidy
Suppose that you observe light emitted from a distant star to be at a wavelength of 525 nm. the wavelength of light to an observer on the distant star is 950 nm. what is the velocity of the star relative to you (in units of the speed of light c), and is it moving towards or away from you?
Answers: 2
Physics, 21.06.2019 15:00
If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.
Answers: 2
Physics, 22.06.2019 01:30
Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor
Answers: 1
Physics, 22.06.2019 07:00
Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
Answers: 1
Suppose that you observe light emitted from a distant star to be at a wavelength of 525 nm. the wave...
Computers and Technology, 07.12.2019 05:31