Statements A, C, D, and E are all true.
Statements B and F are false.
Answer:
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.
Wavelength can be defined as the distance from one peak to the next peak. Also, this distance is equal to the distance from one trough of a wave to another.
Mathematically, the speed of a wave is given by the formula;
V = fλ
Where;
V is the speed of the wave.
f is the frequency of the wave.
λ is the wavelength of the wave.
The speed of a wave (wave speed) is directly proportional to the frequency of a wave.
This ultimately implies that, an increase in the speed of a wave would cause an increase in the frequency of a wave and vice-versa.
Answer:
The range of angles is from 17.50° to 31.76°
Explanation:
The diffraction grid equation is as follows:
Clearing for 
where is the angle, 
is the order, in this case 
, 
is the wavelength, and 
is defined as follows:
and since the resolution is 750 lines/mm wich is the same as 
will be:
wich is the distance between each line of the diffraction grating.
substituting the values for and :
And we need to find two angle values: one for when the wavelength is 400nm and one for when it is 700 nm. So we will get the angle range
and
The range of angles is from 17.50° to 31.76°
So then they get warmed up and can be seen easily
Force = mass x acceleration
Mass is given to be 250kg
Acceleration is given to be 5m/s^2
Force = 250kg x 5m/s^2 = 1,250 kgm/s^2 = 1,250 Newtons
