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drek231 [11]
4 years ago
14

A trolley going down an inclined plane has an acceleration of 2cm/s^2 What will be its velocity

Physics
1 answer:
Snowcat [4.5K]4 years ago
5 0

Answer:

V_{f} = 6 cm/s

Explanation:

<u><em>Given:</em></u>

Acceleration = a = 2 cm/s²

Time = t = 3s

Initial Velocity = V_{i} = 0 cm/s

<u><em>Required:</em></u>

Velocity = V_{f} = ?

<u><em>Formula:</em></u>

a = \frac{V_{f}-V_{i}}{t}

<u><em>Solution:</em></u>

2 = \frac{V_{f}-0}{3}

=> V_{f} = 2*3

=> V_{f} = 6 cm/s

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A uranium nucleus is traveling at 0.94 c in the positive direction relative to the laboratory when it suddenly splits into two p
Anettt [7]

Answer:

A   u = 0.36c      B u = 0.961c

Explanation:

In special relativity the transformation of velocities is carried out using the Lorentz equations, if the movement in the x direction remains

     u ’= (u-v) / (1- uv / c²)

Where u’ is the speed with respect to the mobile system, in this case the initial nucleus of uranium, u the speed with respect to the fixed system (the observer in the laboratory) and v the speed of the mobile system with respect to the laboratory

The data give is u ’= 0.43c and the initial core velocity v = 0.94c

Let's clear the speed with respect to the observer (u)

      u’ (1- u v / c²) = u -v

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      u (1 + u ’v / c²) = v - u’

      u = (v-u ’) / (1+ u’ v / c²)

Let's calculate

      u = (0.94 c - 0.43c) / (1+ 0.43c 0.94 c / c²)

      u = 0.51c / (1 + 0.4042)

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We repeat the calculation for the other piece

In this case u ’= - 0.35c

We calculate

       u = (0.94c + 0.35c) / (1 - 0.35c 0.94c / c²)

       u = 1.29c / (1- 0.329)

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3 years ago
A doorknob is a type of wheel and axle. In a doorknob, the door handle acts as the wheel. The handle is connected to a cylinder,
Schach [20]
I’m not 100% sure but I believe it’s C.84
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4 years ago
A traveling electromagnetic wave in a vacuum has an electric field amplitude of 98.9 V/m . Calculate the intensity ???? of this
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Answer:

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As we know that the magnitude of electric field intensity is given as

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intensity = \frac{1}{2}\epsilon_0 E^2 c

intensity = \frac{1}{2}(8.85 \times 10^{-12})(98.9)^2(3\times 10^8)

intensity = 12.98 W/m^2

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so the energy that flows through the area of 0.0259 m^2 in 11.7 s is given as

Energy = Area \times time \times intensity

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Energy = 3.93 J

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3 years ago
A ball is launched up a semicircular chute in such a way that at the top of the chute, just before it goes into free fall, the b
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We have centripetal acceleration = v^2/r = 2g

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S =displacement, u = initial velocity, a= acceleration and t = time

Here S =  2r and a = g , u = 0

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Answer:

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3 years ago
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