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3 years ago

14

Find the work performed when the given force f f is applied to an object, whose resulting motion is represented by the displacem

ent vector d
d. assume the force is in pounds and the displacement is measured in feet

1 answer:

Ahat [919]3 years ago

3 0

work = force x distance

fd foot pounds

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matrenka [14]

Answer:

The answer to your question is

Explanation:

Data

mass = 0.5kg

T1 = 35

T2 = ?

Q = - 6.3 x 10⁴ J = - 63000 J

Cp = 4184 J / kg°C

Formula

Q = mCp(T2 - T1)

T2 = T1 + Q/mCp

Substitution

T2 = 35 - 63000/(0.5 x 4184)

T2 = 35 - 63000/2092

T2 = 35 - 30.1

T2 = 4.9 °C

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Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is

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Answer:

0.125 volts

Explanation:

The induced emf can be sufficient to stimulate neuronal activity.

One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms.

We need to find the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field. The formula for the induced emf is given by :

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Where

$\phi$ is magnetic flux

So,

$\epsilon=-\dfrac{d(BA)}{dt}\\\\=2\pi r\times \dfrac{dB}{dt}\\\\=2\pi \times 1.6\times 10^{-3}\times \dfrac{1.5-0}{120\times 10^{-3}}\\\\=0.125\ V$

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You are working as a summer intern for the Illinois Department of Natural Resources (DNR) and are assigned to some initial work

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Answer:

Check the explanation

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Pressure = Patm + rho*g*h (Here h = D2)

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3 years ago

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Answer:

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mv + P = mV

P = mV - mv = m(V - v)

Since the velocity of the ball before and after is in opposite direction, one of them is negative

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Hence the force exerted to generate such momentum within 1.7ms (0.0017s) is

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3 years ago

A light beam has speed c in vacuum and speed v in a certain plastic. The index of refraction n of this plastic is

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Answer:

$n = \frac{c}{v}$

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3 years ago