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maksim [4K]
3 years ago
15

Radio waves are readily diffracted around buildings, whereas light waves are negligibly diffracted around buildings. This is bec

ause radio waves
Physics
1 answer:
Tom [10]3 years ago
6 0

Answer:

Radio waves have longer wavelength

Explanation:

Radio wave is an electromagnetic frequency that has the ability to travel through long distance. They have frequencies shuttling been the range of 10^4 hz and a frequency of 10^12 hz

Light wave is also called visible light. This is because it is visible to the naked eye, despite it being in the electromagnetic spectrum. It's frequency is usually between 4*10^-7 hz and a frequency of 7*10^-7 hz.

As can be seen from both, the radio waves length are quite far stronger than that of the light waves.

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A car of mass 650 kg slows from a speed of 20.0 m/s to a speed of 10.0 m/s. How much kinetic energy has it lost. How much force
Natalija [7]
Formulas you need for this problem:
F= mass•acceleration
KE= mass•velocity^/2
Acceleration= final velocity-intial velocity/time
time= distance/speed

t= 97.5\10= 9.75 seconds
Acc= 10-20/9.75= -1.03 m/s/s

These are the answers :)
F=650•-1.03= -669.5N
KE= 650•100/2= 32,500J or 32.5KJ
7 0
4 years ago
How do greenhouse gases affect visible and infrared light?
Verizon [17]
Makes the temperature rise and causes radiation that is primarily absorbed by gasses and water vapor in the atmospher 
7 0
3 years ago
Your friend turns the volume up on their speaker system, so that the sound intensity is 4 times greater than it was beforehand.
erica [24]

Answer:

4

Explanation:

We know that intensity I = P/A where P = power and A = area through which the power passes through.

Now, let the initial intensity of the speaker be I₀ and its initial power be P₀. Since the intensity is increased by a factor of 4, the new intensity be I and new power be P.

So, I = P/A and I₀ = P₀/A

Now, if I = 4I₀,

P/A = 4P₀/A

P = 4P₀

Now, energy E = Pt, where t = time. So, P = E/t and P₀ = E₀/t

Substituting P and P₀ into the equation, we have

P = 4P₀

E/t = 4E₀/t

E = 4E₀

Since the energy is four times the initial energy, the energy output increases by a factor of 4.

4 0
3 years ago
when a satellite is a distance d from the center of the earth, the force due to gravity on the satellite is F. what would be the
swat32
F₁ = c / d²
F₂ = c / (3d)²

F₁/F₂ = 3² = 9

F₂ = 1/9 F₁

5 0
4 years ago
A 500 kg object is hanging from a spring attached to the ceiling. If the spring constant in the spring is 900 N/kg, how far does
My name is Ann [436]

We are given that a 500 kg object is hanging from a spring. To determine the amount the spring is stretched we will use Hook's law, which states the following:

F=kx

Where:

\begin{gathered} F=\text{ force} \\ k=\text{ spring constant} \\ x=\text{ distance stretched} \end{gathered}

Since the object is hanging the only force acting on the spring is the weight of the object. The weight of the object is:

F_g=mg

Where:

\begin{gathered} m=\text{ mass} \\ g=\text{ acceleration of gravity} \end{gathered}

Plugging in the values we get:

F_g=(500\operatorname{kg})(9.8\frac{m}{s^2})

Solving the operations:

F_g=4900N

Now we solve for "x" from Hook's law by dividing both sides by "k":

\frac{F}{k}=x

Now we plug in the known values:

\frac{4900N}{900\frac{N}{m}}=x

Solving the operations:

5.4m=x

Therefore, the spring is stretched by 5.4 meters.

7 0
1 year ago
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