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grigory [225]
3 years ago
14

you need to measure the length of your driveway. which measuring tool would you produce accurate results that you would expectto

be the same as those found by others
Physics
2 answers:
lesantik [10]3 years ago
3 0
I’d assume a tape measure?
mihalych1998 [28]3 years ago
3 0

Answer: A meter tape will be a good fit for the job

Explanation: What is a driveway? It is a type of private road for local access to one or a small group of structures, and is owned and maintained by an individual or group. Hence what will do the job in my opinion is a meter tape

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A boy notices that 45 complete waves travel past him in ninety seconds. What is the
san4es73 [151]

Answer:

0.5 Hz

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How can humans increase the rate of endangered of extinct species
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I would think A. Reduce Environmental Impacts.

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If you introduce new predators they are going to kill all the endangered species and if you pass new laws about land use some people may kill the species

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What is the meaning of smooth?
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A surface in which is flat or very soft to the touch and reduces splinters or anything sticking out, having an surface which does not have lumps, or indentations.

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3 years ago
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40 the weight of the object
Ann [662]

The frictional force of an object is the product of the normal force and coefficient of kinetic friction. Here the frictional force acting on the object  is 16.4 N.

<h3>What is frictional force?</h3>

Frictional force is a kind of force acting on a body to resist it from motion. Thus, the direction of the force will be in negative with the magnitude. Frictional force is the product of coefficient of friction and the normal force.

The normal  force acting on the object of mass 4.2 Kg is N = mg

N = 4.2 Kg × 9.8 m/s² = 41.16 N

Frictional force = ц N

                         = 0.40 × 41.16 N

                         = 16.4 N.

Therefore, the frictional force acting between the surface of the object and the floor is 16.4 N

To find more on frictional force, refer here:

brainly.com/question/1714663

#SPJ1

Your question is incomplete. But your complete question probably was:

The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40 the weight of the object is 4.2 kg. What is the frictional force of the object?

3 0
1 year ago
A small metal bead, labeled A, has a charge of 28 nC .It is touched to metal bead B, initially neutral, so that the two beads sh
Dmitry_Shevchenko [17]

Answer:

Explanation:

Let the charge on bead A be q nC  and the charge on bead B be 28nC - qnC

Force F between them

4.8\times10^{-4} = \frac{9\times10^9\times q\times(28-q)\times10^{-18}}{(5\times10^{-2})^2}

=120 x 10⁻⁸ = 9 x q(28 - q ) x 10⁻⁹

133.33 = 28q - q²

q²- 28q +133.33 = 0

It is a quadratic equation , which has two solution

q_A = 21.91 x 10⁻⁹C or q_B = 6.09 x 10⁻⁹ C

3 0
3 years ago
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