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Verdich [7]
4 years ago
9

Local radio station WMMM-FM (Triple M), bills itself as the "Sound of Madison". Its radio waves are broadcast at a frequency of

105.5 MHz (megahertz). What is the wavelength (in meters) of Triple M’s radio broadcast waves? Report your answer to 4 significant figures. (c = 2.998 x 108 m/s)
Physics
1 answer:
densk [106]4 years ago
4 0

Answer: wavelength= 2.842m

Explanation:

wave speed C= frequency × wavelength

Wavelength= C/ frequency

= 2.998× 10exp8/ 105.5×10exp6Hz

Wavelength= 2.842m

Goodluck...

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iragen [17]

Answer:

it have Potential energy

Explanation:

given data

Drag the pendulum to an angle 30∘

to find out

what form of energy does it have

solution

we know that pendulum start no kinetic energy when it release from any rest position then in starting it have potential energy only so that when pendulum is angle 30∘ at some height from ground so when it start it have potential energy same as in starting.

we know that the total energy is always conserve  

so it have potential energy

3 0
3 years ago
what is the necessary condition within the hydrogen atom for balmer line photons to be absorbed by the hydrogen atom
luda_lava [24]

Explanation :

When an electron jumps from one energy level to another, the energy of atom gets changed.

If a photon gets absorbed, the electron will move to higher energy levels and then fall back to the lower energy levels. Then each time a photon will be absorbed whose energy is given by difference between the initial and final energy levels i.e

In Balmer series, the transition is from higher energy levels to n = 2.

So, the necessary condition for Balmer series is that the electron should be at first excited state or n = 2 level as shown in figure.


6 0
3 years ago
The US government wants to allocate billions of dollars in the next 10 years to help assure our future energy security. The fund
Tom [10]

This question is a very good one indeed! I am very happy you asked it. I would first like to say that, although energy is important, our planet is more so. That is why I feel like we should always try to explore ideas that are both useful to the human race but also useful in protecting our environment because what is the use in having energy if we will not be able to use it. That is why I feel that we should try at types of energy like solar and wind. The problem is finding ways that are less expensive and more efficient. For example, creating a wind energy system that creates a sizeable about of energy and also is not too expensive and hard to make like the wind turbines of nowadays. Also what comes into question is the effect of these ideas and I feel that although some of these may have harmful effects, they must be used. One thing though is that I do not agree in expanding on our oil and gas exploration because it has so many bad effects to our environment that it is hardly worth it. If we can find alternatives in these other sources, like many states in the USA are trying to do, then we will be able to move much faster in technology and also help protect our lovely planet.

7 0
4 years ago
Jane climbs the stairs to the first floor all by herself in a certain time. If the next time she rides the elevator to the first
hodyreva [135]

Answer:

the power in both cases is the same.

Explanation:

hope helps you

thanksss

3 0
3 years ago
The kinetic friction coefficient between a cabinet and the floor is 0.3. Mass of the cabinet is 300kg. A man pushes the cabinet
podryga [215]

Answer:

<h2>0.39m/s^2</h2>

Explanation:

Step one:

given data

mass m= 300kg

applied force F= 1000N

coefficient of friction μ= 0.3

Step two:

The net force Fn= applied force-friction force  

Fn=F-F1

F1= limiting force

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F1=0.3*300*9.81

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Step three:

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F=ma

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a= Fnet/m

a=117.1/300

a=0.39m/s^2

7 0
3 years ago
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