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Gnoma [55]
3 years ago
12

Every surface has different ____________________ of friction.

Physics
1 answer:
dedylja [7]3 years ago
3 0

Answer:

amounts

Explanation:

every surface has different amounts of friction

hope this helps :) plz brainliest?

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The nonmetal family of the periodic table that wants to gain, lose, or share four electrons is the __________ family.
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QUESTION: What is the relationship between the masses of the objects and the gravitational force between them? (Another way of a
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A wrench 0.500 m long is applied to a nut with a force of 80.0 N. Because of the cramped space, the force must be exerted upward
riadik2000 [5.3K]

Answer:

Torque, \tau=34.6\ N.m

Explanation:

It is given that,

Length of the wrench, l = 0.5 m

Force acting on the wrench, F = 80 N

The force is acting upward at an angle of 60.0° with respect to a line from the bolt through the end of the wrench. We need to find the torque is applied to the nut. We know that torque acting on an object is equal to the cross product of force and distance. It is given by :

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3 years ago
A 5.0 mm diameter proton beam carries a total current of 1.5mA. The current density in the proton beam, which increases with dis
slavikrds [6]

Answer:

Jedge = 0.076A/cm^2

Explanation:

If you want to know what is Jedge is convenient to use an integral. The total density current is given by:

J_T=\int_{0}^{R}J_{edge}(\frac{r}{R})dr=J_{edge}(\frac{1}{R})(\frac{R^2}{2})=\frac{J_{edge}R}{2}  (1)

But also, we have that the total current is

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where we have used that 5mm=5*10^{-3}m.

By replacing (1) we obtain:

J_{edge}=\frac{2J_T}{R}=\frac{2(19.09A/m^2)}{5*10^{-3}m}=7639.4\frac{A}{m^2}=0.076\frac{A}{cm^2}

hope this helps!!

3 0
4 years ago
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