The initial speed of the boat is
and its acceleration is
Since the boat is moving by uniform accelerated motion, the distance covered by the boat in a time t=10 s is given by:
So, the boat covers a distance of 350 m in 10 seconds.
Answer:
The point at which the electrical potential is zero is x = +0.33 m.
Explanation:
By definition the electrical potential is:
Where:
K: is Coulomb's constant = 9x10⁹ N*m²/C²
q: is the charge
r: is the distance
The point at which the electrical potential is zero can be calculated as follows:
(1)
q₁ is the first charge = +3 mC
r₁ is the distance from the point to the first charge
q₂ is the first charge = -6 mC
r₂ is the distance from the point to the second charge
By replacing r₁ = 1 - r₂ into equation (1) we have:
(2)
By solving equation (2) for r₂:
Therefore, the point at which the electrical potential is zero is x = +0.33 m.
I hope it helps you!
The potential energy is directly proportional to the height.
If you double the height you double the potential energy.
Answer:
Therefore, the answer is: Option A.
Explanation:
- The average speed is defined as the total distance traveled by an object divided into the time that it takes for the object to travel that distance.
- Average speed is a scalar quantity, which means that it can be represented using a number with no need of specifying a direction. Since the total distance is a positive value, then average speed is always also a positive value.
From the options, the statement "average speed includes both rate of motion and its direction" is false.
