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zmey [24]
3 years ago
6

Which of the following describes the importance of cyanobacteria to early Earth atmosphere formation?

Physics
1 answer:
Dmitrij [34]3 years ago
6 0

I do believe it is a
You might be interested in
Do wormholes exist ?? is it possible to traverse to the other side of the universe ?
Nastasia [14]
Black holes is exists
Black holes is highly gravitional wave field in space
8 0
3 years ago
Hannah drove 360 mi in 5.2 hours. What was her average speed?
ANTONII [103]
Her average speed would be 69.2 miles per hour

Explanation:
When you take the number of miles and divide it by the number of hours you get 69.2 (when rounded)
That is how fast she went per hour
5 0
3 years ago
Please help with this
frosja888 [35]
912.

outer ear:
pinna
ear canal

middle ear:
ossicles and ear drum

inner ear:
semcircular canals
cochlea
auditory nerve

13.
frequency = wavespeed ÷ wavelength

14.
if frequency increases you would experience a higher pitch in sound

15.
humans can hear 20Hz to 20kHz

16.
The Doppler effect is the change in frequency or wavelength of a wave for an observer who is moving relative to the wave source. Can be used for machines measuring speed via doppler effect.

17.
Doppler in hospitals can be used for ultrasound to provide images for diagnosis and monitoring.
8 0
3 years ago
A group of campers travels to a cabin which has no electrical power. In order to provide for a heater and lights, which device w
larisa [96]

Answer:A generator is the appropriate device to be used.

Explanation:

A generator is a device which transforms mechanical energy to electrical energy.

The different parts of a generator includes:

- Engine, alternator, fuel system, voltage regulator, lubricating system, cooling and exhaust system, Battery charger and control panel.

The generator works on the principle of electromagnetic induction which states that

that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field. This movement creates a voltage difference between the two ends of the wire or electrical conductor, which in turn causes the electric charges to flow, thus generating electric current.

Therefore, the use of a generator is the best device for the campers to provide electrical power source for their heaters and light in the cabin.

8 0
3 years ago
A charge of 8.4 × 10–4 C moves at an angle of 35° to a magnetic field that has a field strength of 6.7 × 10–3 T.
sineoko [7]

Answer:10842.33m/s

Explanation:

F=qvBsine

V=f/(qBsine)

V=(3.5×10^-2)÷(8.4×10^-4×6.7×10^-3×sin35)

V=10842.33m/s

5 0
3 years ago
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