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Strike441 [17]
3 years ago
9

Briefly explain how an electric motor works.

Physics
1 answer:
NeTakaya3 years ago
3 0
You put electricity<span> into it at one end and an </span>axle<span> (metal rod) rotates at the other end giving you the power to drive a machine of some kind. 


</span>

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If i fail choir do i fail 7th grade
Strike441 [17]

Answer:

no ....................

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A car of mass 1200 kg traveling westward at 30. m/s is slowed to a stop in a distance of 50. m by the car’s brakes. What was the
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I believe that the answer is C. 11,000
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The Moon has a mass of 7.35 * 1022 kg, and a radius of 1.737 * 106 m. Based on
suter [353]

Answer:

1.63 ms^{-2}

Explanation:

The equation g = \frac{G*M}{R^2} would be used where:

g = acceleration due to gravity

G = universal gravitational constant (6.67408 × 10^{-11} m^{3} kg^{-1} s^{-2})

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7 0
3 years ago
A mass of 3 slugs (this is the English unit of mass, a pound is a force) is attached to a vertical spring with a spring constant
motikmotik

Answer:

equation of motion for the mass is x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

Explanation:

Given data

mass = 3 slugs = 3 * 32.14 = 96.52 lbs

constant k = 9 lbs/ft

Beta = 6lbs * s/ft

mass is pulled =  1 ft below

to find out

equation of motion for the mass

solution

we know that The mass is pulled 1 ft below so

we will apply here differential equation of free motion i.e

dx²/dt² + 2 α dx/dt + ω² x =0     ........................1

here 2 α  =  Beta / mass

so 2 α  = 6 / 96.52

α  = 0.031

α²  = 0.000961         ...............2

and

ω² = k/mass

ω² = 9 /96.52

ω² = 0.093     ..................3

we can say that from equation 2 and 3 that α² - ω²  = -0.092239

this is less than zero

so differential equation is

x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

equation of motion for the mass is x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

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3 years ago
Define one solar day​
Mila [183]

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the time between successive meridian transits of the sum at a particular place

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