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viva [34]
1 year ago
15

A child stands on the edge of a merry-go-round of radius 1.63 m which is rotating at 2.13 rad/s.

Physics
1 answer:
Brilliant_brown [7]1 year ago
7 0

Answer:

9

Explanation:

2.13 rad/s * 26.9 sec

2.13 * 26.9

57.297

3282.88 deg / 360 deg = 9.12

It makes 9 complete revolutoins

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An electron moving at right angles to a 0.1 T magnetic field experiences an acceleration of 6 × 1015 m.s-2. What is the speed of
GaryK [48]

Explanation:

It is given that,

Magnetic field, B = 0.1 T

Acceleration, a=6\times 10^{15}\ m/s^2

Charge on electron, q=1.6\times 10^{-19}\ C    

Mass of electron, m=9.1\times 10^{-31}\ kg    

(a) The force acting on the electron when it is accelerated is, F = ma

The force acting on the electron when it is in magnetic field, F=qvB\ sin\theta

Here, \theta=90

So, ma=qvB

Where

v is the velocity of the electron

B is the magnetic field

v=\dfrac{ma}{qB}

v=\dfrac{9.1\times 10^{-31}\ kg\times 6\times 10^{15}\ m/s^2}{1.6\times 10^{-19}\ C\times 0.1\ T}

v = 341250  m/s

or

v=3.41\times 10^5\ m/s

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(b) In 1 ns, the speed of the electron remains the same as the force is perpendicular to the cross product of velocity and the magnetic field.

7 0
3 years ago
Hii!!!
ra1l [238]

Answer:

no

Explanation:

because The properties of matter include any traits that can be measured,

Physical properties can be observed or measured.

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A crane moves a 250 kg scoreboard from the ground to the height of 100 m. What is the work done on the scoreboard?
Mazyrski [523]
If you’re doing potential and kinetic energy then the answer is potential.
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2 years ago
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What impulse occurs when a cart that is originally at rest experiences an average force of
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Explanation:

What impulse occurs when a cart that is originally at rest experiences an average force of

N for 2.5 s? *

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25 N

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Option D would be the correct one!
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