Physics, 09.03.2021 19:40 crosales102
In an experiment, a flashlight and a buzzer are each placed in a vacuum chamber connected to a vacuum pump.
They are switched on, and the air is slowly removed from the chamber. A sensor placed outside of the vacuum
chamber records the output of each device.
vacuum chamber
Device Vacuum Pump
Device Detected at
Sensor
Sensor
on
no
buzzer
off
yes
Vacuum
pump
on
yes
flashlight
off
yes
Which conclusion does the experiment support?
A. Sound waves travel farther than light waves.
B. Sound waves need a medium to travel
C. Light waves travel slower than sound waves.
D. Lightwaves need a vacuum to travel.
Answers: 1
Physics, 21.06.2019 19:00
Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false
Answers: 1
Physics, 22.06.2019 05:00
Wavelength,frequency,and energy are related.what happens to a wave as itβs wavelength gets shorter?
Answers: 2
Physics, 22.06.2019 05:30
What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?
Answers: 3
Physics, 22.06.2019 10:00
** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils
Answers: 1
In an experiment, a flashlight and a buzzer are each placed in a vacuum chamber connected to a vacuu...
Biology, 04.02.2020 21:53
Mathematics, 04.02.2020 21:53
Mathematics, 04.02.2020 21:53
Physics, 04.02.2020 21:53
English, 04.02.2020 21:53
Biology, 04.02.2020 21:53
Mathematics, 04.02.2020 21:53
English, 04.02.2020 21:53