Answer:
A wave transfers energy as it moves away from the source.
Explanation:
A wave transfers energy as it moves away from the source. A wave is known to be a disturbance that travels through a medium and transfer energy from a point to the other without causing any permanent displacement of the medium itself.
Let's take water as an example of a medium through which wave is transfered. As the water moves away from its source, the wave generates energy. The wave produces a motion which leads to transfer of kinetic energy as the medium moves from its source since kinetic energy is the energy acquired by a body by virtue of its motion.
Answer:
and 
Explanation:
Hi! Since the notation is a little bit messed up, I am going to suppose that
--- (1)
and :
--- (2)
Here we are going to use a trigonometric identity of the sine of the sum of two angles, namely:
--- (3)
Lets set:
So now (2) becomes:
--- (4)
Now (1) and (4) must be equal, and in particular we must have the following identities:
--- (5)
If we square these two identities and sum them we got:
And since:
We got the first solution:
For the second part we must divide the identies (5)
We got:
And since:
We use the inverse of the tan function:
Greetings!
Answer:
Q1) C, D
Q2) A
Q3) E
Q4) C
Q5) B
Q6) C
Explanation:
I think these are correct, hopefully it helps!
A child on ice skates is given a small push from behind by a parent. There is an unbalanced force on the child, and the child’s motion will change direction or increase speed.
A child on ice skates is given a small push from behind by a parent. How are forces used to describe the resulting motion?
- Because of equal and opposite reactions, there will be a force opposing the push from the parent, and they will not move. FALSE. According to Newton's third law of motion, if the parent applies force on the child, there will be a reaction applied by the child on the parent. These forces are applied to different objects so they will not cancel and the child will move.
- There is an unbalanced force on the child, and the child’s motion will change direction or increase speed. TRUE. The child will have an acceleration as a consequence of the unbalanced force. The acceleration will be responsible for the change in the direction or speed of the child.
- There is a balanced force on the child, and the child’s motion will change direction or increase speed. FALSE. If the forces were balanced, that is, there was no net force, the movement of the child would not change, as stated by Newton's first law of motion.
- Because of equal and opposite reactions, the child will move in the opposite direction to the force. FALSE. The child will move in the direction of the net force.
A child on ice skates is given a small push from behind by a parent. There is an unbalanced force on the child, and the child’s motion will change direction or increase speed.
Learn more about Newton's laws here: brainly.com/question/6839345
T = 27° C = 27 + 273 = 300 K
Bolzmann constant: k b = 1.38065 · 10^(-22) J/K
K = 3/2 kb T
K = 3/2 · 1.38065 · 10^(-22) J/K · 300 K = 6.212925 · 10^(-20) J
