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Nimfa-mama [501]
2 years ago
8

What is refraction? this my in sta id-:akhilrawat9453​

Physics
2 answers:
My name is Ann [436]2 years ago
6 0

Explanation:

ij jdjcjxjjdjnndnxnsmxnjxjebxnc

White raven [17]2 years ago
4 0

Answer:

refers to the bending of light

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A cart is pulled horizontally with a 156.6 N force to the right at a 67 degree angle with respect to the ground. The cart is mov
ella [17]

Answer:

b) Vertical= 144.15N [up]

horizontal= 61.19N [right]

c)  -61.19N [Left]

D) 9.8m - 144.15 = Fn

Explanation:

a) to draw the free body diagram, you would draw a square to represent the object, being the cart. The forces acting on it are Force of gravity (Fg going down), Normal force (Fn going up), Force applied (Fa going up right), and Force of friction  (Ff,going to the left, opposite of Fa).

b) So the applied force is 156.6N, and has an angle of 67. the 156.6N is the hypotenuse, so you would need to find the opposite side (vertical component), and adjacent side (horizontal component):

vertical:

sinθ = opp / hyp

sin67 = opp / 156.6

opp = 144.15N [up]

horizontal:

cosθ = adj / hyp

cos67 = adj / 156.6

adj = 61.19N [right]

c)Since the cart has constant velocity, the acceleration is 0, meaning no net force (fnet = ma, a = 0, fnet = 0), so the horizontal component of the applied force is equal to the frictional force. Heres why mathematically. (X DIRECTION ) :

Fnet = Fa + Ff

0 = Fa + Ff

-Ff = Fa.

So the force of friction has the same magnitude, but opposite direction. So since the horizontal component of applied force was 61.19 N, the frictional force will be -61.19N

d) So now we are looking at the Fnet in the y direction, which is also 0 because the car is remaining on the ground, its not going up nor down:

Fnety = 0

Fnet is composed of Fg, Fn and Fay (force applied  in y direction);

fnet = Fn + Fay + Fg.      Fn and Fay are both up, and Fg is down, so u need to subtract Fg:

fnet = Fn + Fay - Fg.

0 = Fn + 144.15 - mg

mg - 144.15  = Fn

9.8m - 144.15 = Fn

Since it didnt give you a mass thats how much you could simplify it down to, in order to get the Fn

6 0
3 years ago
A very large sheet of a conductor carries a uniform charge density of on its surfaces. What is the electric field strength 3.00
olga55 [171]

Complete Question

A very large sheet of a conductor carries a uniform charge density of 4.00\  pC/mm^2  on its surfaces. What is the electric field strength 3.00 mm outside the surface of the conductor?

Answer:

The electric field is  E  =  4.5198 *10^{5} \ N/C

Explanation:

From the question we are told that

    The charge density is  \sigma  =  4.00pC  /mm^2 = 4.00 * 10^{-12 } *  10^{6} = 4.00 *10^{-6}C/m

    The position outside the surface is  a  =  3.00 \ mm  =  0.003 \ m

   

Generally the electric field is mathematically represented as

          E  =  \frac{\sigma}{\epsilon _o  }

Where  \epsilon_o is  the permitivity of free space with values  \epsilon _o  = 8.85 *10^{-12}  F/m

substituting values  

           E  =  \frac{4.0*10^{-6}}{8.85 *10^{-12}  }

           E  =  4.5198 *10^{5} \ N/C

5 0
3 years ago
A positively charged particle initially at rest on the ground accelerates upward to 160 m/s in 2.10 s. The particle has a charge
mamaluj [8]

Answer:

The magnitude of the electric field is 8.6\times10^{2}\ N/C

Explanation:

Given that,

Time t = 2.10 s

Speed = 160 m/s

Specific charge =Ratio of charge to mass = 0.100 C/kg

We need to calculate the acceleration

Using equation of motion

a=\dfrac{v-u}{t}

Put the value into the formula

a=\dfrac{160-0}{2.10}

a=76.19\ m/s^2

We need to calculate the magnitude of the electric field

Using formula of electric field

E=\dfrac{F}{q}

E=\dfrac{ma}{q}

E=\dfrac{a+g}{\dfrac{q}{m}}

Put the value into the formula

E=\dfrac{76.19+9.8}{0.100}

E=8.6\times10^{2}\ N/C

The direction is upward.

Hence, The magnitude of the electric field is 8.6\times10^{2}\ N/C

4 0
3 years ago
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A wave has 25 wavelengths in 5 secs. The frequency of the wave is _.
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7 0
2 years ago
Do we use more freshwater in our homes to provide us with electricity
Aleonysh [2.5K]

Answer:

No. Water can be used in a hydroelectric dam to generate electricity, but this does not make us use more or less water in our homes.

Explanation:

3 0
3 years ago
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