To measure the mass of a planet with the same radius as earth, an astronaut drops an object
from rest (relative to the planet) from an altitude of one radius above the surface. when the
object hits its speed is 4 times what it would be if the same experiment were carried out for
earth. in units of earth masses, the mass of the planet is:
a. 2
b. 4
c. 8
d. 16
e. 32
ans: d
Answers: 2
Physics, 21.06.2019 22:30, ceceshelby646
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 1
Physics, 22.06.2019 00:30, kittykat8317
There are weak or strong attractive forces between atoms of liquids with a high viscosity
Answers: 3
To measure the mass of a planet with the same radius as earth, an astronaut drops an object
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Mathematics, 07.05.2020 02:10