Answer:
Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.
If your mass is 140kg , then your mass is <em>140kg</em>.
It doesn't make a bit of difference what time it is, whether you're happy or sad, sleeping or lifting weights or running, whether it's raining or shining, hot or cold, climbing a mountain or falling out of an airplane, on the surface of a planet, asteroid, comet or star, or floating or falling through empty lonely outer space. Your mass is your mass. The only way it can change is if YOU make changes in yourSELF, like eating a big steak, sweating through a long tough workout, or skipping dinner, or growing to maturity.
(I guess you're already pretty mature. If your mass is 140kg, then you weigh about 308 pounds when you're on Earth.)
Within a single medium, the product of (wavelength) x (frequency)
is always the same number, for all waves. (It's the wave-speed.)
This means that longer wavelengths must have lower frequencies,
and shorter wavelengths must have higher frequencies, in order for
the product to always come out to be the same.
The velocity the wave was traveling at before the transmitter converts it to a sound wave is 3.0 x 10⁸ m/s.
<h3>What is Velocity of waves?</h3>
The velocity of waves is the rate of change of the wave's displacement with time.
The velocity of waves is determined by taking the product of the wave's frequency and wavelength.
v = fλ
v = 13,000 x 23,076
v = 3.0 x 10⁸ m/s.
Thus, the velocity the wave was traveling at before the transmitter converts it to a sound wave is 3.0 x 10⁸ m/s.
Learn more about velocity of waves here: brainly.com/question/13867834
Answer:
105.6857 nm
Explanation:
Wave length of laser pointer = λ = 685 nm = 685×10⁻⁹ m
Distance between screen and slit = L = 5.4 m
Width of bright band = 2x = 7 cm
⇒x = 3.5 cm = 3.5×10⁻² m
The first minimum occurs at
sin θ = λ/d
θ = λ/d (since the angle is very small, sin θ ≈ θ)
Width of slit
d = λL/x
⇒d = 685×10⁻⁹×5.4/3.5×10⁻²
⇒d = 1056.857×10⁻⁷ m
∴ The width of the slit is 105.6857 nm
