Physics, 29.09.2020 21:01 carliefox26
Which statement is true?
The perfect cosmological principle is the basis for the oscillating universe theory.
The oscillating universe theory suggests that the universe will expand forever,
The perfect cosmological principle is the basis for the big bang theory.
The perfect cosmological principle is the basis for the steady state theory.
Answers: 2
Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
Answers: 3
Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
Answers: 1
Physics, 22.06.2019 06:00
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
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
Which statement is true?
The perfect cosmological principle is the basis for the oscillating univer...
Biology, 19.07.2019 01:30
Biology, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Biology, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30
Social Studies, 19.07.2019 01:30