As the skydiver falls to Earth, she experiences positive acceleration due to
2 answers:
Explanation :
When an object moves under the action of gravity. Then the object is said to be moving under free fall.
We know that the acceleration due to gravity is denoted by g and it is equal to .
If the body is accelerating towards the gravity the value of g is positive while when it is accelerating against the gravity it is negative.
As the skydiver falls to Earth, she experiences positive acceleration due to gravity.
So, the correct option is (a) gravity.
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1) In the reference frame of one electron: 0.38c
To find the relative velocity of one electron with respect to the other, we must use the following formula:
where
u is the velocity of one electron
v is the velocity of the second electron
c is the speed of light
In this problem:
u = 0.2c
v = -0.2c (since the second electron is moving towards the first one, so in the opposite direction)
Substituting, we find:
2) In the reference frame of the laboratory: -0.2c and +0.2c
In this case, there is no calculation to be done. In fact, we are already given the speed of the two electrons; we are also told that they travel in opposite direction, so their velocities are
+0.2c
-0.2c
Answer:
20 volts
Explanation:
Use the equation