Frequency of light = speed of light/wavelength = 3x10⁸/725x10⁻⁹ =4.13 x 10¹⁴ Hz
Answer:
C)evaporating of water
Explanation:that is because waters physical property is lost after evaporating
Answer:
The value is
Explanation:
From the question we are told that
The speed of the man is
The distance covered by the man is
Generally the time taken is mathematically represented as
=>
=>
Answer:
A. change in acceleration or direction
Explanation:
A motion map can be defined as the graphical representation of the acceleration, velocity and position of a body or an object at specific intervals (period of time) or time readings.
For motion maps that illustrate accelerated motion, a new level indicates a change in acceleration or direction.
Acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time. Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
Additionally, acceleration is a vector quantity because it has both magnitude and direction.
Saying the potential difference between two points is one volt means that 1 joule of work is done to move 1 coulombs of charge from one point to another.
Potential difference or voltage can be defined as the work done or work involved to transfer a unit charge of electricity from one point to another.
In other words, potential difference is the electrical force or electrical pressure needed to move a unit charge (about 6 quintillion electrons) from point A to point B. It is measured in volts.
To calculate potential difference we use;
Potential difference = work done / charge
Learn more about potential difference here:
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