Answer: composition, its size and shape.
Explanation:
All objects have <u>a frequency that characterizes them</u>, which is called <u>natural frequency</u>. This means that if a disturbance or vibration is emitted near the object, it will begin to vibrate due to its natural frequency.
It should be noted that there are objects that have more than one natural frequency, and this depends on the composition of the object, its elasticity, its shape and size.
Answer:
11.5
Explanation:
you do 12(sin 73.3) because its on the y you do sin
Mass: the amount of matter an object contains
Weight: mass•acceleration due to gravity(9.8m/s) / the force of gravity acting on an object
Answer:
a)
b)
Explanation:
We start the exercise knowing that a ball is thrown up with an initial velocity of 65 ft/s with an initial height of 680 ft.
To calculate the maximum heigh, we know that at the top of the motion the ball stop going up and start going down because of the <em>gravity</em>
First of all, we need to calculate the time that takes the ball to reach the maximum point.
a)
Knowing that time, <u><em>we can calculate the height to which the ball rises:</em></u>
b) Now, to know the time that the ball reach the bottom of the cliff, we know that the final height is y=0ft
This is a classic quadratic equation, that can be solve using the quadratic formula
a=-16.1
b=65
c=640
Solving for t, we have that
or
Since the time can not be negative:
Answer: 380 nm (violet-blue) and 780 nm (red)
Explanation:
The portion visible by the human eye of the electromagnetic spectrum is between 380 nm (violet-blue) and 780 nm (red) approximately.
This part of the spectrum is located between ultraviolet light and infrared light.
It should be noted that the fact only part of the whole electromagnetic spectrum is visible to humans is because the receptors in our eyes are only sensitive to these wavelengths.