The smallest unit that makes up matter is an atom!
Answer:
a) 48.5 ft/s
b) 36.5 ft
c) -80.3 ft/s
Explanation:
a)
The equation of motion of the ball is :
y(t) = -16.1 ft/s^2 * t^2 + Vo*t
Where Vo is the initial velocity
If y(5s) = - 160 ft:
-160 ft = -16.1 ft/s^2 * (5 s)^2 + Vo*(5s)
Solving for Vo
Vo = (16.1*25- 160) ft / 5s = 48.5 ft/s
b)
To answer this question we must first know when the velocity became zero, at this time is when the ball was at its highest point.
v(t) = -32.2 ft/s^2 * t + Vo
t = Vo/32.2ft/s^2 = 1.5 s
And now, the highest point which the ball reached is given by:
y(1.5s) = -16.1 ft/s^2 * (1.5)^2 + Vo*(1.5s)
y(1.5s) = 36.52 ft
c)
We now need the time at which y(t') = -64 ft
-64 = -16.1*t'^2 + 48.5*t'
By means of the quadratic formula, we find that
t' = 4.00498 s ≈ 4 s
And the velocity at t = 4s is:
v(4s) = -32.2 ft/s^2 * 4s +48.5 ft/s = -80.3 ft/s
Answer:
V = 192 kV
Explanation:
Given that,
Charge, 
Distance, r = 0.3 m
We need to find the electric potential at a distance of 0.3 m from a point charge. The formula for electric potential is given by :
So, the required electric potential is 192 kV.
There are a variety of waves from light waves to mechanical waves. Waves can exhibit different effects like the Doppler Effect.
All light waves behave in a similar manner. They either get transmitted, reflected, absorbed, refracted, polarized, diffracted, or scattered based off of the composition of the object and the wavelength of the light.
According to Wikipedia, “One important property of mechanical waves is that their amplitudes are measured in an unusual way, displacement divided by (reduced) wavelength. When this gets comparable to unity, significant nonlinear effects such as harmonic generation may occur, and, if large enough, may result in chaotic effects.” Mechanical waves are chaotic and its “amplitudes” are measured unusually.
Diffraction is when light bends around objects and spread after passing out through small openings. “Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as light that the eye can see.”-Wikipedia. Here is the formula to Diffraction: <em>d </em>sin <em>θ </em>= <em>nλ</em>
Doppler effect can occur for any type of wave like sound or water waves. An example of this is when we hear a police car with its sirens on, coming towards us. The closer you are to the police car, the higher the wavelength, but the farther away you are, the lower the wavelength.
<em />
