3 years ago

Pls Help,

Physics

1 answer:

Blizzard [7]3 years ago

7 0

B. Wind and Density :D

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Say you want to make a sling by swinging a mass M of 1.7 kg in a horizontal circle of radius 0.048 m, using a string of length 0

DENIUS [597]

Answer:

Tension in the string is equal to 58.33 N ( this will be the strength of the string )

Explanation:

We have given mass m = 1.7 kg

radius of the circle r = 0.48 m $F=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N$

Kinetic energy is given 14 J

Kinetic energy is equal to $KE=\frac{1}{2}mv^2$

So $\frac{1}{2}\times 1.7\times v^2=14$

$v^2=16.47$

v = 4.05 m/sec

Centripetal force is equal to $F=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N$

So tension in the string will be equal to 58.33 N ( this will be the strength of the string )

3 0

3 years ago

Kinetic energy has this unit?

Kobotan [32]

Heres your great lovley answer that you need

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3 years ago

Atoms are made up of even smaller particles called ?

labwork [276]

Answer:

Atoms are made up of even smaller particles called protons, electrons & neutrons (sub-atomic particles)

3 0

3 years ago

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for an object that is speeding up in the positive direction, what does the displacement vs. time graph look like?

slava [35]

Answer:

The speeding up is steady, it is a parabola (a=V*t+(at^2)/2), and give it's an equation in connection to time, at that point, it is conceivable to discover the separation recipe by utilizing more substantial amount mathematics(integrals).

Explanation:

7 0

4 years ago

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The gravitational self potential energy of a solid ball of mass density ρ and radius R is E. What is the gravitational self pote

Alenkasestr [34]

It will be
E = mgh.
where h and g are constant thus
m can be written as 4/3πr^3*density
E = 4/3πr^3* density
E? = 4/3π(2R)^3* density
= 4/3π8r^3
thus the e will be 4/3π8r^3* density/4/3πr^3*density nd thus you get 8E ..

8 0

3 years ago