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3 years ago

If the normal force exerted on an object increases, the coefficient of sliding friction will also increase. True False

Physics

2 answers:

lbvjy [14]3 years ago

4 0

Answer:

FALSE

Explanation:

As we know that the friction force between two sliding surfaces is given by the formula

$F_f = \mu F_n$

here

$\mu$ = coefficient of friction

it depends on the the inter molecular force between the molecules of the two surfaces which slide over each other

now if we will increase the normal force then it will increase the force of friction

but if will not change the value of coefficient of friction between two surface as it is property of the surface only

professor190 [17]3 years ago

3 0

The answer is false

I hope I helped

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a skier speeds along a flat patch of snow, and then flies horizontally off the edge at 16.0 m/s. He eventually lands on a straig

geniusboy [140]

Answer:

1.63 s

Explanation:

The skier lands on the sloped section when the direction of its velocity is exactly identical to that of the slope, so at $45.0^{\circ}$ below the horizontal.

This occurs when the magnitude of the vertical velocity is equal to the horizontal velocity (in fact, $\tan \theta =\frac{|v_y|}{v_x}$ , and since $\theta=45.0^{\circ}, tan \theta = 1$ and so $|v_y| = v_x$ .

We already know the horizontal velocity of the skier:

$v_x = 16.0 m/s$

And this is constant during the entire motion.

The vertical velocity instead is given by

$v_y = u_y + gt$

where

$u_y = 0$ is the initial vertical velocity (zero since the skier flies off horizontally)

g = 9.8 m/s^2

t is the time

Here we have chosen the downward direction as positive direction.

Substituting $v_y = 16.0 m/s$ , we find the time:

$t=\frac{v_y}{g}=\frac{16.0}{9.8}=1.63 s$

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3 years ago

explain the surprising realization scientists are making about bacteria and what Danino hopes to eventually be able to do using

dmitriy555 [2]

Answer:

your answer for $1 at www.gotit-pro.com

Explanation:

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3 years ago

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VashaNatasha [74]

The answer to the question is A

6 0

3 years ago

Read 2 more answers

Two objects are dropped from a bridge, an interval of 1.00 s apart. What is their separation 1.00 s after the second object is r

katen-ka-za [31]

Answer:

Explanation:

The velocity of sound in water = 343m/s

Time taken = 1.00secs

using the formula to calculate the distance

2x = vt

x is the distance

v is the speed of sound

t is the time

x = vt/2

x = 343(1)/2

x = 171.5m

<em>hence their separation 1.00 s after the second object is released is 171.5m</em>

4 0

3 years ago

A satellite orbits earth at constant speed in circular orbit.Which statement is correct? A The resultant force on the satellite

inn [45]

Answer:

B The resultant force on the satellite is towards the Earth.

Explanation:

In the case when the satellite orbits earth would be at constant speed in the circular orbit so hee the resultant force that on the satellite would be with regard to the earth

So as per the given situation, the option B is correct

And, the rest of the options would be wrong

And, the same would be relevant

3 0

3 years ago