<h3><u>Answer;</u></h3>
Doppler effect
<h3><u>Explanation</u>;</h3>
- <em><u>The pitch of the siren of a Fire truck appears to change as the truck passes us due to the Doppler effect.</u></em>
- <em><u>Doppler effect is the tendency to increase or decrease the wavelength of the sound due to the motion of the source. </u></em>
- Therefore; when the ambulance is approaching ab observer, the wavelength is decreased and the pitch of the sound also increases as compared to when the ambulance is at rest.
- When the ambulance passes and is moving away from an observer, the wavelength is increased and the pitch is decreased below the value when the source is at rest.
Answer:
- Calculate the time (in minutes) that it would take for the jet to cover the distance at the given speed.
- Multiply the time with the rate of burning of fuel by the jet.
Explanation:
<em>A military jet cruising at an altitude of 12.0 km and speed of 1200 km/h burns fuel at the rate of 80.1 L/min. How would you calculate the amount of fuel the jet consumes on a 750 km mission?</em>
In order to calculate the amount of fuel that would be consumed, <u>first, there is a need to find the time it will take to complete the 750 km mission</u>.
Recall that: speed = distance/time, at a speed of 1200 km/h, the time taken to cover a distance of 750 km would be;
time = distance/speed
= 750/1200 = 0.625 h
The rate of fuel burning is 80.1 Liters in a minute, there are 60 minutes in 1 hr;
1 hr = 60 minutes
0.625 h = 0.625 x 60 = 37.5 minutes
It takes 37.5 minutes to cover 750 km and the fuel burning rate is 80.1 liters per minute, hence, <u>the amount of fuel consumed by the jet would be;</u>
80.1 x 37.5 = 3000 liters
Answer:
bats locate food using sound wave by there ears
Explanation:
there ears can her everything
Answer:
Explanation:
<u>Speed</u>
The speed is calculated as the ratio of the distance d by the time t:
If we need to calculate the distance, the equation is solved for d:
d=v*t
The speed of light is
It takes t=9.221 seconds for light reflected from the moon Vega to reach planet Xartan.
We can calculate the average distance the light traveled:
Or, in scientific notation:
