3 years ago

Length of the force vector represents the

Physics

2 answers:

aev [14]3 years ago

6 0

Honestly I don’t even know

aleksandrvk [35]3 years ago

4 0

what’s the force vector i just need more information

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A body of mass 2 kilograms moves on a circle of radius 3 meters, making one revolution every 5 seconds. Find the magnitude of th

harkovskaia [24]

Answer: $F_c=9.375 N$

Explanation:

Given

mass of body $m=2 kg$

radius of circle $r=3 m$

Time Period $T=5 s$

suppose $\omega$ is the angular velocity of revolution

therefore $\omega T=2\pi$

$\omega =\frac{2\pi }{5}=1.25 rad/s$

Centripetal acceleration $a_c=\omega ^r$

$a_c=1.25^2\times 3$

$a_c=4.68 m/s^2$

therefore centripetal $F_c=m\omega ^2\times r$

$F_c=9.375 N$

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3 years ago

What is described as the flow of charged particles?

rodikova [14]

Answer:

An electric current

Explanation:

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Mechanical (sound) waves are unable to travel through a vacuum, such as through space, but radio waves are transmitted to Earth

hichkok12 [17]

There is no medium for the sound waves to travel through

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#4 HELP PLEASE! Find Gravitational Potential Energy! THANK YOU!

Scilla [17]

Answer:

$\Delta GPE=-3.92\ 10^9\ J$

Explanation:

Gravitational Potential Energy

It's the capacity of an object to do work due to its relative height from a fixed reference point.

It's computed as

GPE=m.g.h

Where m is the mass of the object, h is its height and g is the acceleration of gravity, $g=9.8 m/sec^2$

The mass of water is given as

$m=8,000,000\ kg$

The height above the rocks is h=50 m. Let's compute the GPE

$GPE_1=(8,000,000\ kg)(9.8\ m/s^2)(50\ m)$

$GPE_1=3,920,000,000\ Joule$

It should be expressed in scientific notation

$GPE_1=3.92\ 10^9\ J$

The GPE at the bottom, where h=0

$GPE_2=0$

The change of gravitational potential energy is:

$\Delta GPE=GPE_2-GPE_1$

$\boxed{\Delta GPE=-3.92\ 10^9\ J}$

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3 years ago

Henry can lift a 200 N load 20 m up a ladder in 40 s. Ricardo can lift twice the load up one-half the distance in the same amoun

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Henry will lift 200 N load 20 m up a ladder in 40 s. While the Ricardo will take 400 N load in 80 seconds. So, For Henry to take 400 N load it will take him 80 seconds in two attempts. And,also, he will have to cover 40 m of distance.

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