3 years ago

what is usually caused when dissimilar materials are rubbed together transferring electrons from one to another

Physics

1 answer:

Volgvan3 years ago

6 0

Answer:

static electricity

Explanation:

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For an object to be classified as a ____, it must meet certain definite criteria: It must be massive enough to pull itself into

Orlov [11]

Answer:

a planet

Explanation:

a planet is one which exerts these properties and therefore is the answer

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4 years ago

A weak magnet can become stronger by dropping it or striking it with a hammer.<br> True Or False

Vikentia [17]

I think it is false, because why would is be stronger in a different state?

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3 years ago

A wooden block meauring 40cm x 10cm x 5cm has a mass 850gm . find the density of wood?

Lelechka [254]

Answer:

Explanation:

Density = Mass / Volume = 850 / 40*10*5 = 0.425 g /cm^3

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3 years ago

If your good in science please help me with this question.

Dahasolnce [82]

Answer:

A inertia

B force and acceleration

C force

D action reaction

E action reaction

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3 years ago

A 15.0 g bullet is moving to the right with speed 270 m/s when it hits a target and travels an additional 25.0 cm into the targe

Fantom [35]

Answer:

$F=2187\ N$

Explanation:

Given:

mass of bullet, $m=15\ g=0.015\ kg$

initial velocity of bullet, $u=270\ m.s^{-1}$

displacement of the bullet in the target, $s=25\ cm=0.25\ m$

Here as given in the question the bullet penetrates the target by the given displacement of the bullet into it. During this process it faces deceleration and hence it comes to rest.

so, final velocity of the bullet, $v=0\ m.s^{-1}$

Now using the equation of motion:

$v^2=u^2+2a.s$

where:

$a=$ acceleration of the bullet

$0^2=270^2+2a\times 0.25$

$a=145800\ m.s^{-2}$

<u>Now the force of resistance offered by the target in stopping it:</u>

$F=m.a$

$F=0.015\times145800$

$F=2187\ N$

5 0

3 years ago