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3 years ago

OF BRICK (a) The pushing force does not make the brick move. Explain why.

Physics

1 answer:

Sever21 [200]3 years ago

6 0

Every force has an equal but opposite reaction, the forces are balanced out on the brick.

Weight (mg) acts downwards from the brick but the normal contact force from the table is acting upwards therefore resultant force is 0N equilibrium

You know the direction of the force is based upon the resultant force, so if you were to push the brick horizontally across the table it would travel horizontally

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This is called the restoring force.

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4 years ago

The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 A is 1.00μT. (a) At what distance is it 0.100μ

maw [93]

The distance should be 4m from the wire in order to get the magnetic field of 0.100μ .

The magnitude and direction of the magnetic field due to a straight wire carrying current can be calculated using the previously mentioned Biot-Savart law. Let "I" be the current flowing in a straight line and "r" be the distance. Then the magnetic field produced by the wire at that particular point is given by $B=\frac{u_0I}{2\pi r}$ ...(1)
Since the wire is assumed to be very long, the magnitude of the magnetic field depends on the distance of the point from the wire rather than the position along the wire.

It is given that magnetic field 40.0 cm away from a straight wire is 1.00μT having current 2.00 A .

From equation (1) magnetic field 40.0 cm = 0.4m away from a straight wire is 1.00μT which is given by $1.00=\frac{u_0I}{2\pi \times0.4}$ .....(2)

From equation (1) magnetic field 'r' m away from a straight wire is 0.100μT which is given by $0.100=\frac{u_0I}{2\pi \times r}$ ...(3)

On dividing equation (2) by (3) , we get

$\frac{1}{0.1} =\frac{r}{0.4} \\\\r=4m$

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2 years ago

After a large snowstorm, you shovel 2,500 kilograms of snow off of your sidewalk in half an hour. You lift

Delvig [45]

Well, the snow has a total weight G=mg=25,000 N. The work is L=Fd=Gh=1.5*25,000=37,500 J. The power is L/t, where t=1800 seconds. P=37,500/1800=20.833 W.

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3 years ago

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Anarel [89]

Answer:

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i hope this helps-

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Answer:

Eating food produce locally makes it where big trucks don't have to bring it to the restaurant

Explanation:

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