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Fiesta28 [93]
3 years ago
8

Box A is pulled 2 meters when a 3-newton force is applied to it.

Physics
1 answer:
murzikaleks [220]3 years ago
3 0

Answer: 0

Explanation: 1-1

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a powerboat accelerates along a straight path from 0 km/hr to 99.8 km/hr in 10.0 s.Find the average acceleration of the boat in
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(27.72-0)/10
= 2.772 m/s2
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3 years ago
The magnitude of a force is:
lys-0071 [83]

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c

Explanation:

force is how hard it is pulled or pushed

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Asteroids are _____ than planets but _____ meteoroids.
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B smaller;larger than
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Shayla was late for school. She ran the last half mile in 4 minutes. What was her average speed in miles per hour?
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7.5 miles per  hour

Explanation:

6 0
3 years ago
A square loop of side 7 cm is placed with the nearest side 2 cm from a long wire carrying a current that varies with time at a c
ioda

Answer:

Explanation:

side of the square loop, a = 7 cm

distance of the nearest side from long wire, r = 2 cm = 0.02 m

di/dt = 9 A/s

Integrate on both the sides

\int _{0}^{i}di =9\int _{0}^{t}dt

i = 9t

(a) The magnetic field due to the current carrying wire at a distance r is given by

B = \frac{\mu_{0}i}{2\pi r}

B = \frac{\mu_{0}\times 9t}{2\pi r}

(b)

Magnetic flux,

\phi=\int B\times a dr

\phi=\int \frac{\mu_{0}\times 9t}{2\pi r}\times a dr

\phi=\frac{\mu_{0}\times 9t\times a}{2\pi}\times ln\left ( \frac{2 + 7}{2} \right )

\phi=\frac{\mu_{0}\times 9t\times 0.07}{2\pi}\times ln(4.5)

\phi = 1.89 \times 10^{-7}t

(c)

R = 3 ohm

e = -\frac{d\phi}{dt}

magnitude of voltage is

e = 1.89 x 10^-7 V

induced current, i = e / R = (1.89 x 10^-7) / 3

i = 6.3 x 10^-8 A

8 0
3 years ago
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