3 years ago

Somebody please help me my grade depends on it

Physics

1 answer:

Darya [45]3 years ago

8 0

Answer: Hope this helps!

Explanation:

a rock formed from particles that are deposited and lithified are sedimentary.

rocks formed from cooling and hardening magma or lava is igneous.

a rock formed when an already existing rock is subjected to extreme heat and pressure is metamorphic.

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according to the law of conservation of energy , energy is neither created nor destroyed , then from where electrons get their e

soldier1979 [14.2K]

Answer:

Hello There!!

Explanation:

Electrons get their energy by absorbing light.

hope this helps,have a great day!!

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3 years ago

A 60-V potential different is applied across a parallel combination of a 10-ohm and 20-ohm resistor. What is the current in the

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V=IR
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Distinguish between pressure and force

Naddika [18.5K]

Force is (mass × acceleration) measured in Newton

Pressure is the 'force' per unit area measured in Newton/m^2 (pascal)

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3 years ago

A: How far did she travel? <br><br><br><br> B: How long did she take?

allochka39001 [22]

A. 60 miles
B. 5 hours

Unless you are looking for slope, in which case the answer is different

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3 years ago

A man stands on a platform that is rotating (without friction) with an angular speed of 1.0 rev/s; his arms are outstretched and

Airida [17]

Answer:

Explanation:

Given

$N_1=1 rev/s$

angular velocity $\omega =2\pi N_1=6.284 rad/s$

Combined moment of inertia of stool,student and bricks $=6\ kg.m^2$

Now student pull off his hands so as to increase its speed to suppose $N_2$ rev/s

$\omega _2=2\pi N_2$

After Pulling off hands so final moment of inertia is

$I_2=2\ kg-m^2$

Conserving angular momentum as no external torque is applied

$I_1\omega _1=I_2\omega _2$

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$\omega _2=18.85\ rad/s$

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3 years ago