Answer:
6.52m/s
Explanation:
Hello!
To solve this problem follow the steps below, the complete procedure is in the attached image
1. draw a complete outline of the problem involving forces and geometries
2. Find the time that elapses from when the ball is thrown until it hits the water, this is achieved using the kinematic equation for constant acceleration and zero vertical initial velocity.
3. taking into account that the ball is launched horizontally, and that there is no horizontal acceleration, the only thing we must do is find the speed by dividing the distance traveled horizontally and dividing it by time
Answer:
a
b
Explanation:
Generally the force constant is mathematically represented as
substituting values given in the question
=>
=>
Generally the workdone in stretching the spring 3.5 m is mathematically represented as
=>
=>
Generally the workdone in compressing the spring 2.5 m is mathematically represented as
=>
=>
Answer:
Explanation:
The interaction of the piece of copper and water means that the first one need to transfer heat in order to reach a thermal equilibrium with water. Then:
After a quick substitution, the expanded expression is:
The final temperature of the system is:
Answer:
Explanation:
the light ray leaving a medium in contrast to the entering or incident ray.
