It is called a photon i believe
i did the same test! Its volcanic island arcs
Answer:
The maximum height reached by the ball is 20 meters
Explanation:
Given that,
Height, h = 10 m
Potential energy at the height of 10 m,
The ball is moving upward with a kinetic energy of 50 Joules
Let h is the maximum height reached by the ball. At a height of 10 meters above the ground, the energy is given by :
mg = 5 N
At this point, total energy will be 100 J. We know that the velocity is zero at maximum height. So, the ball possess only potential energy. it is given by :
h = 20 meters
So, the maximum height reached by the ball is 20 meters. Hence, this is the required solution.
Answer:
Tension in the supporting cable is = 4,866 N ≅4.9 KN
Explanation:
First of all, we need to understand that tension is a force, so the motion law
F = Ma applies perfectly.
From Newtons third law of motion, action and reaction are equal and opposite. This means that the force experienced by the elevator, is equal to the tension experienced by the spring.
Parameters given:
Mass of load = 1650 kg
Acceleration of load = ?
The acceleration of the load can be obtained by diving the change in velocity by the time taken. But we need to know the time taken for the motion to 41 m.
Time taken = distance covered / velocity
= = 3.73 seconds
∴Acceleration = ( initial velocity - final velocity )/ time taken
Note: Final velocity is = 0 since the body came to a rest.
Acceleration = = 2.95m/
Force acting on the cable = mass of elevator × acceleration of elevator
= 1650 × 2.95 = 4869.5 kg ≅ 4.9 KN
These pattern of lines<span>, sometimes referred to as </span>electric field lines<span>, point in the direction that a positive test charge would accelerate if placed upon the </span>line<span>. As such, the </span>lines<span> are directed away from positively charged source charges and toward negatively charged source charges.</span>