subject
Physics, 20.05.2021 18:40 chris3487

Which explanation could a student use to explain how electromagnetic and mechanical waves travel? O A Neither electromagnetic nor mechanical waves travel in a vacuum and neither transfers energy.
O B. Both electromagnetic and mechanical waves travel in a vacuum and they both transfer energy.
O C. Mechanical waves can travel through a vacuum and a medium and they transfer energy.
OD. Electromagnetic waves can travel through a vacuum and a medium and they transfer energy.

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
question
Physics, 22.06.2019 12:30
Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
Answers: 2
question
Physics, 22.06.2019 12:30
Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?
Answers: 1
question
Physics, 22.06.2019 17:30
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance
Answers: 3
You know the right answer?
Which explanation could a student use to explain how electromagnetic and mechanical waves travel? O...
Questions
question
Biology, 23.10.2020 22:30
question
Mathematics, 23.10.2020 22:30
question
Mathematics, 23.10.2020 22:30
question
Mathematics, 23.10.2020 22:30