3 years ago

How does making a model help scientist observe?? HELPP PLEASEEE

Physics

1 answer:

coldgirl [10]3 years ago

8 0

Making a model helps the scientists have a better example or view of what they are working with

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The wattage of a bulb is 24 W when it is connected to a 12 V battery. Calculate its effective wattage if it operates on a 6 V ba

tresset_1 [31]

It would be 12W because: 6v is half of 12v so half of 24w would be 12w

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2 years ago

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A wind-tunnel experimentis performed on a 1/25scale model of a supersonic aircraft. The prototype aircraft flies at 450 m/s in c

KengaRu [80]

Answer: V = 504m/a

F = 4N

Explanation: please find the attached file for the solution

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3 years ago

3. A microwave oven draws 12 A of current on a 110 V household circuit. What is its power

steposvetlana [31]

Answer:

W = 1320Watts

Explanation:

W = I*V

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3 years ago

In the picture of the atom above, what subatomic particle does the letter A represent?

ra1l [238]

Answer:

Electron

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2 years ago

A 27 kg bear slides, from rest, 14 m down a lodgepole pine tree, moving with a speed of 6.1 m/s just before hitting the ground.

Nadusha1986 [10]

<h2>Thus the force of friction is 235 N</h2>

Explanation:

When the bear was at the height of 14 m . Its potential energy = m g h

here m is the mass of bear , g is acceleration due to gravity and h is the height .

Thus P.E = 27 x 10 x 14 = 3780 J

The K.E of the bear just before hitting = $\frac{1}{2}$ m v²

= $\frac{1}{2}$ x 27 x ( 6.1 )² = 490 J

The force of friction f = P.E - K.E = 3290 J

Because the work done = Force x Distance

Thus frictional force = $\frac{3290}{14}$ = 235 N

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3 years ago