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Umnica [9.8K]
3 years ago
14

What is the difference between P and S waves

Physics
1 answer:
Doss [256]3 years ago
3 0
Primary waves are faster than Secondary waves

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A student has the following equipment - copper wire, nail made of iron,a battery, paperclips.
Anna11 [10]
Taking the copper wire, he has to wind it around the nail made of iron. After which, he then connect both ends of the copper wire to the battery, so an electric charge travels through the wire. This is the basic electromagnet. Since a current is now flowing through the wire, a magnetic field is produced. Placing the electromagnet near the mixture of copper and iron, the magnet should attract the pieces of iron, as iron is more magnetic compared to copper. This is done over a period of time, so that only the copper pieces are left in the mixture. 
3 0
3 years ago
How does gravity keep the moon in orbit around earth
lidiya [134]

Answer:

The moon's orbit draws the oceans to it, which triggers ocean tides. Force produces stars and planets by gathering the mass from which it exists.

Explanation:

The moon's orbit draws the oceans to it, which triggers ocean tides. Force produces stars and planets by gathering the mass from which it exists.

Answer is above

<em><u>Hope this helps.</u></em>

3 0
2 years ago
a liquid with a specific heat of 1900J/Kg° C has 4750 joules of heat energy is added to it. if the temperature increases from 20
GREYUIT [131]
E=mcθ
where E is the energy added,m is the mass,c is the specfic heat capacity and θ is the change in temprature.
making m subject u get E/c<span>θ=m
</span><span>θ=(30-20)=10</span><span>
plugging the values  we get :
</span>\frac{4750}{1900*10}
<span>
solving it we get the answer that is 0.25kg or 250 grams

</span>
8 0
2 years ago
List two examples of when you would use light years as a measurement.
astra-53 [7]
One is when you are measuring a distance in space! I don't know the other but hope you find another example!
7 0
3 years ago
When an excited electron falls from n = 3 to n = 2, a red radiation in the Balmer series emitted. What is the frequency of this
vichka [17]

Answer:

The frequency of this photon is 4.57\times10^{14}\ Hz

(D) is correct option.

Explanation:

Given that,

Excited states,

n=3

n=2

We need to calculate the wavelength

Using formula for energy

E=13.6(\dfrac{1}{n^2}-\dfrac{1}{m^2})

E=13.6(\dfrac{1}{4}-\dfrac{1}{9})

E=1.888\ eV

E=1.888\times1.6\times10^{-19}\ J

E=3.0208\times10^{-19}\ J

We need to calculate the frequency

Using formula of frequency

E=hf

f=\dfrac{E}{h}

Where, E =energy

f=\dfrac{3.0208\times10^{-19}}{6.63\times10^{-34}}

f=4.57\times10^{14}\ Hz

Hence, The frequency of this photon is 4.57\times10^{14}\ Hz

4 0
2 years ago
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