<h2>Right answer: acceleration due to gravity is always the same </h2><h2 />
According to the experiments done and currently verified, in vacuum (this means there is not air or any fluid), all objects in free fall experience the same acceleration, which is <u>the acceleration of gravity</u>.
Now, in this case we are on Earth, so the gravity value is 
Note the objects experience the acceleration of gravity regardless of their mass.
Nevertheless, on Earth we have air, hence <u>air resistance</u>, so the afirmation <em>"Free fall is a situation in which the only force acting upon an object is gravity" </em>is not completely true on Earth, unless the following condition is fulfiled:
If the air resistance is <u>too small</u> that we can approximate it to <u>zero</u> in the calculations, then in free fall the objects will accelerate downwards at and hit the ground at approximately the same time.
There's an effect called The Doppler Effect, that's the "up and down" sound.
That frequency is 1.8mm and 115 per minute.
(Hope this helped.)
Answer:
Explanation:
From the question we are told that:
Radius r=13
Coefficient of static friction \mu=0.67
Given the Centripetal concept
Generally the equation for Velocity v is mathematically given by
The value of the minimum speed (in m/s) for the cyclist to perform the stunt is Given as
Answer:
B) -2 Coulombs
Explanation:
In order to find the net charge, we must add the charge that you have with the charge that your friend has, but taking into account the different sign. In fact, we have:
- Charge possessed by you: Q1 = +3 C
- Charge possessed by your friend: Q2 = -5 C
Therefore, the net charge possessed by both persons will be given by
Q = Q1 + Q2 = +3 C + (-5 C) = +3 C - 5 C = -2 C
