Calcula el tiempo que tarda en llegar a la Tierra la luz del sol si viaja a 300.000 km/s sabiendo que la distancia del sol a la
1 answer:
Calculate the time it takes for sunlight to reach Earth if it travels at 300,000 km / s, knowing that the distance from the sun to the earth is 150,000,000 km. Express it in minutes
Answer:
8.3min
Explanation:
Given parameters:
Speed of sunlight = 300000km/s
Distance of sun and earth = 150000000km
Unknown:
Time in minutes = ?
Solution:
To solve this problem;
Speed =
Time =
Now insert the parameters and find the speed;
Time = = 500s
Now;
60s makes 1 minute
500s will give = 8.3min
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Answer:
xmax = 9.5cm
Explanation:
In this case, the trajectory described by the electron, when it enters in the region between the parallel plates, is a semi parabolic trajectory.
In order to find the horizontal distance traveled by the electron you first calculate the vertical acceleration of the electron.
You use the Newton second law and the electric force on the electron:
(1)
q: charge of the electron = 1.6*10^-19 C
m: mass of the electron = 9.1*10-31 kg
E: magnitude of the electric field = 4.0*10^2N/C
You solve the equation (1) for a:
Next, you use the following formula for the maximum horizontal distance reached by an object, with semi parabolic motion at a height of d:
(2)
Here, the height d is the distance between the plates d = 2.0cm = 0.02m
vo: initial velocity of the electron = 4.0*10^6m/s
You replace the values of the parameters in the equation (2):
The horizontal distance traveled by the electron is 9.5cm
Answer:
The Height of a pyramid is 4r.
Explanation:
Explanation is in the following attachments
Answer: 2.83 minutes
Explanation:
It is understood that trains are approaching. That is, they have speeds of equal magnitude but opposite. When train A travels x meters northbound, then train B travels the same distance southbound.
Therefore trains approach at a speed of:
Then:
Where x is the distance between the trains
So the time in which both trains meet is:
This is:
<em />
<em>How long will it be before they reach one another ?</em>
<h3>2.83 minutes</h3>