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anzhelika [568]
3 years ago
14

What is strength of the electric field between two parallel conducting plates separated by 1.00 cm and having an electric potent

ial difference between them of 15,000 V?
Physics
1 answer:
Alex17521 [72]3 years ago
6 0

Answer:

Electric field will be 1.5\times 10^{6}V/m

Explanation:

We have given potential difference between the two plates = 15000 volt

Distance between the plates = d=1cm=10^{-2}m

We have to find the electric field strength between the plates

Potential difference between the plates is equal to V=Ed

So electric field strength will be E=\frac{V}{d}=\frac{15000}{10^{-2}}=1.5\times 10^{6}V/m

So electric field will be 1.5\times 10^{6}V/m

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Dennis throws a volleyball up in the air. It reaches its maximum height 1.1\, \text s1.1s1, point, 1, start text, s, end text la
rewona [7]

Answer:

If max height = 1.1 meters, then initial velocity is 3.28 m/s

If max height is 1.1 feet, then the initial velocity is 5.93  ft/s

Explanation:

Recall the formulas for vertical motion under the acceleration of gravity;

for the vertical velocity of the object we have

v=v_0-g \,t

for the object's vertical displacement we have

y-y_0=v_0\,t - \frac{g}{2} \,t^2

If the maximum height reached by the object is given in meters, we use the value for g in m/s^2 which is: 9.8\,\,m/s^2

If the maximum height of the object is given in feet, we use the value for g in  ft/s^2  which is : 32\,\,ft/s^2

Now, when the ball reaches its maximum height, the ball's velocity is zero, so that allows us to solve for the time (t) the process of reaching the max height takes:

v=v_0-g \,t\\0=v_0-g \,t\\g\,\,t=v_0\\t=\frac{v_0}{g}

and now we use this to express the maximum height in the second equation we typed:

y-y_0=v_0\,t - \frac{g}{2} \,t^2\\max\,height=v_0\,(\frac{v_0}{g})  - \frac{g}{2} \,(\frac{v_0}{g})^2\\max\,height= \frac{v_0^2}{2\,g}

Then if the max height is 1.1 meters, we use the following formula to solve for v_0:

1.1= \frac{v_0^2}{2\,9.8}\\(9.8)\,(1.1)=v_0^2\\v_0=10.78\\v_0=\sqrt{10.78} \\v_0=3.28\,\,m/s

If the max height is 1.1 feet, we use the following formula to solve for v_0:

1.1= \frac{v_0^2}{2\,32}\\(32)\,(1.1)=v_0^2\\v_0=35.2\\v_0=\sqrt{35.2} \\v_0=5.93\,\,ft/s

5 0
3 years ago
Read 2 more answers
A 1500 kg car moving with a speed of 20 m/s collides with a utility pole and is brought to rest in 0.30 s. Find the magnitude of
storchak [24]

Answer:

-100000 N.

Explanation:

Force: This can be defined as the product of the mass of a body and it's acceleration. The S.I unit of Force is Newton(N). The Formula of force is given as,

F = ma ........................... Equation 1

Where F = Average force exerted on the car, m = mass of the car, acceleration of the car, a = acceleration of the car.

a = (v-u)/t..................... Equation 2

Where v = Final velocity, u = Initial velocity, t = time.

Substitute equation 2 into equation 1

F = m(v-u)/t............. Equation 3

Given: m = 1500 kg, u = 20 m/s, v = 0 m/s (brought to rest), t = 0.3 s.

Substitute into equation 3

F = 1500(0-20)/0.3

F = 1500(-20)/0.3

F = -100000 N.

Note: The negative sign is due to the fact that the force exerted on the car by the pole is equal and opposite the force of the car.

7 0
4 years ago
A 2.50 kg ball moving at 7.50 m/s is caught by a 70.0 kg man while the man is standing on ice. What is the common velocity of th
yarga [219]

Answer:

V = 2.5*7.0 / ( 2.5 + 70 )

8 0
3 years ago
TRUE or FALSE:
Aleksandr-060686 [28]
False. Both masses will experience an acceleration which depends on their mass. The small mass will experience a greater acceleration.
5 0
3 years ago
Consider six proposed properties of electromagnetic radiation: wave speeds of 3.00×108 km/s3.00×108 km/s and 3.00×108m/s3.00×108
-Dominant- [34]

Answer:

1) Speed ​​of light (c)       visible, X-rays

2) λ = 0.221 nm                         X-rays

3) λ = 673 nm               Visible

4) .f = 2.39 10¹⁸ Hz                   X-rays

5) .f = 4.85 10¹⁴ Hz        Visible

Explanation:

Electromagnetic radiation has several characteristics

The speed of the wave regardless of its wavelength or frequency is

        c = 3 10⁸ m / s²

There is a relationship with speed

       c = λ f

The speed c is for all waves (x-rays, visible)

Visible light has a wavelength between 400 nm to 700 nm,

X-ray light corresponds to wavelengths less than 10 nm

Light gamma rays for wavelength less than 0.1 nm

Let's look for the frequencies for the two ranges

Visible

      f = c /λ

       f = 3 10⁸/400 10⁻⁹ = 7.5 10¹⁴ Hz

       f = 3 10⁸ (/ 700 10⁻⁹ = 4.29 10¹⁴ Hz

Visible range of the order of 10¹⁴ Hz

X-rays

       f = 3 10⁸/10 10⁻⁹ = 3 10¹⁶ Hz

       f = 3 10⁸ / 0.1 10⁻⁹ = 3 10¹⁸ Hz

 

X-ray higher frequency 10¹⁶ Hz

1) Speed ​​of light (c)       visible, X-rays

2) λ = 0.221 nm                         X-rays

3) λ = 673 nm               Visible

4) .f = 2.39 10¹⁸ Hz                   X-rays

5) .f = 4.85 10¹⁴ Hz        Visible

7 0
4 years ago
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