3 years ago

What characteristic describes what happens during a physical change

Physics

1 answer:

Alex73 [517]3 years ago

7 0

Physical change changes the form of a chemical substance

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A student of 4 feet tall went for swimming in a pool. He saw the depth of water in the pole less than 4 feet .Will he sink , wri

Nataly_w [17]

Answer:

he will not be drowned

Explanation:

Question says , the height of the student = 4 feet,

Depth of the pool( in feet ) be x ( say ) which is less than 4 feet,

Clearly, the depth of the pool < height of the student,

This means, if the student goes for swimming in the pool, however he does not know swimming, he will not be drowned until he is suffering from an injury or external force.

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3 years ago

What is the mass of a vehicle that has 50,000 N and 25M/S/S

natali 33 [55]

Answer:

F = 1250000 N

Explanation:

If you have 50,000 S, by 25 M. It would be calculated to 1,250,000 N.

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2 years ago

What is the name of the unit you use to measure force?

Anettt [7]

Answer:

that would be newtons.

Explanation:

I hope this helps

8 0

2 years ago

a student pushes on a crate with a force of 100 N directed to the right. what force does the crate exert on a student

soldi70 [24.7K]

100N to the left. Newton's 3rd law action and reaction

5 0

3 years ago

A coil has N turns enclosing an area of A. In a physics laboratory experiment, the coil is rotated during the time interval Δt f

anzhelika [568]

Answer:

$\phi_i = BA$

Explanation:

magnetic flux is the count of magnetic field lines passing through a given loop or area

As we know that magnetic flux is given by the formula

$\phi = \vec B. \vec A$

here we also know that magnetic field B and plane of the coil is perpendicular in initial position

So the area vector is always perpendicular to the plane of the coil

so the angle between magnetic field and area vector is parallel to each other and this angle would be zero

so magnetic flux of the coil initially we have

$\phi = BAcos0 = BA$

6 0

3 years ago