2 years ago

Which of the following would increase friction?

Physics

1 answer:

Serga [27]2 years ago

8 0

It is C the rest is lubricant

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Find the mass of a person who weighs 608 N

Anvisha [2.4K]

Answer:

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2 years ago

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A force of 210 N is applied to an object and the object accelerates at 14m/s2. Determine the mass of the object in kg.

lisabon 2012 [21]

Answer:

15 kg

Explanation:

F = m*a

F/a = m

210/14 = 15 kg

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According to Newton's second law of motion, force can be calculated by multiplying an object's mass by its acceleration. If weig

madreJ [45]

You would do m*a so 65kg * 9.8 m/s^2 which equates to 637 Newton’s

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2 years ago

A box rests on the (horizontal) back of a truck. The coefficient of static friction between the box and the surface on which it

vredina [299]

Answer:

The distance is 11 m.

Explanation:

Given that,

Friction coefficient = 0.24

Time = 3.0 s

Initial velocity = 0

We need to calculate the acceleration

Using newton's second law

$F = ma$ ...(I)

Using formula of friction force

$F= \mu m g$ ....(II)

Put the value of F in the equation (II) from equation (I)

$ma=\mu mg$ ....(III)

$a = \mu g$

Put the value in the equation (III)

$a=0.24\times9.8$

$a=2.352\ m/s^2$

We need to calculate the distance,

Using equation of motion

$s = ut+\dfrac{1}{2}at^2$

$s=0+\dfrac{1}{2}2.352\times(3.0)^2$

$s=10.584\ m\ approx\ 11\ m$

Hence, The distance is 11 m.

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2 years ago

When the current is increased in an electromagnet what happens to the magnetic field?

Crank

When current is increased, the the electromagnetic field gets more powerful.

HOPE IT HELPS.

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3 years ago