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Setler [38]
4 years ago
5

4 uses of plane mirror​

Physics
1 answer:
faust18 [17]4 years ago
5 0

Answer:

they are used in periscopes,for signalling,in kaleidoscopes,to see round dangerous bends

Explanation:

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PLEASE ANSWER AS QUICK AS POSSIBLE!!!!!
horsena [70]

During the operation of fan we know that it is working on the electricity

So here when we connect the fan with electricity it uses the electrical energy and convert that energy into mechanical energy of fan

Fan uses this electrical energy to rotate the blades of fan and then it gives the high speed air to us

So here correct answer must be

B.  

motion energy

8 0
4 years ago
Match the speed to the section that describes.
inn [45]

Answer:

a=2 ok do it and ........

4 0
3 years ago
An accelerated heartbeat is to a slowed heartbeat as the ________ nervous system is to the ________ nervous system.
MrMuchimi

Answer: symphathetic, parasymphatetic

Explanation:

The accelerated heartbeat has a opposite action as compared to the slowed heartbeat likewise the symphathetic nervous system has a opposite action that of parasymphatetic system.

The symphathetic nervous system helps the body to perform intense physical activity like in case of fight or flight response. The parasympathetic nervous system relaxes the body and inhibits its functions that require energy.

6 0
3 years ago
In 1990, a pizza with a radius of 18.0 m was made in South Africa. Suppose you make an air-filled capacitor with parallel plates
Mazyrski [523]

Explanation:

We have,

Radius of pizza, r = 18 m

Potential difference, V = 575 V

Stored electrical potential energy, E = 3.31 J

The area if an air-filled capacitor with parallel plates is equal to that of the pizza. It means, A=\pi r^2=\pi (18)^2=1017.87\ m^2

The stored potential energy in a capacitor is given by :

E=\dfrac{1}{2}CV^2

C is capacitance

C=\dfrac{2E}{V^2}\\\\C=\dfrac{2\times 3.31}{(575)^2}\\\\C=2\times 10^{-5}\ F

The formula of the capacitance of a parallel plate capacitor is given by :

C=\dfrac{\epsilon_o A}{d}

d is plate separation of this capacitor

d=\dfrac{\epsilon_o A}{C}\\\\d=\dfrac{8.85\times 10^{-12}\times 1017.87}{2\times 10^{-5}}\\\\d=4.5\times 10^{-4}\ m

4 0
3 years ago
In aluminum, the speed of sound is 5100 m/s What the wavelength a sound wave of middle C at 264 Hz traveling through aluminum?
Dovator [93]

Answer:

19.32

Explanation:

the wavelength formula is speed divided by frequency

speed = 5100m/s

frequency = 264Hz

so wavelength = 5100 m/s / 263 Hz

= 19.32

3 0
3 years ago
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