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3 years ago

A car travels 40 miles in 30 min. Calculate the car's average speed in mi/hr.

Physics

2 answers:

Law Incorporation [45]3 years ago

8 0

Speed = distance by time
your time is 30 min or 0.5h
you speed is 40 miles divided by 0.5h equals 80 miles per hour

answer is 80mi/hr

Ivenika [448]3 years ago

7 0

1.33 is the answer
40/30 is 1.33

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Answer:

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Explanation:

Given :

Magnitude of magnetic field $B = 0.078$ T

Radius of circle $r = 0.10$ m

Angle between field and surface normal $\theta =$ 25°

From the formula of flux,

$\phi = B.A$

$\phi = BA\cos \theta$

Where $\theta =$ angle between magnetic field line and surface normal, $A =$ area of circular surface.

$A = \pi r^{2}$

$A = 3.14 \times (0.10) ^{2}$

$A = 0.0314$ $m^{2}$

Magnetic flux is given by,

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$\phi = 2.22 \times 10^{-3}$ Wb

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