3 years ago

Friction between solids can be most accurately defined as the force that

Physics

1 answer:

ki77a [65]3 years ago

6 0

Answer:

True

Explanation:

Friction between solids can be most accurately defined as the force that

opposes the sliding motion of two surfaces that are touching each other.

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S Problem Set<br> 2.) 6.4 x 109 nm to cm

anyanavicka [17]

Answer:

$6.4\cdot 10^2 cm$

Explanation:

First of all, let's convert from nanometres to metres, keeping in mind that

$1 nm = 10^{-9} m$

So we have:

$6.4\cdot 10^9 nm \cdot 10^{-9} m/nm = 6.4 m$

Now we can convert from metres to centimetres, keeping in mind that

$1 m = 10^2 cm$

So, we find:

$6.4 m \cdot 10^2 cm/m = 6.4\cdot 10^2 cm$

8 0

3 years ago

If there are no unbalanced forces acting on an object, according to Newton's First Law:

Sergio039 [100]

I think its b because when there is unbalanced forces it accelerates.

Hope this helps you out

4 0

3 years ago

A negatively charged particle is attracted to

Tatiana [17]

Answer: I think the answer is D.

Positively charged particles.

8 0

3 years ago

Marrrta [24]

Answer:

Weight = 9800Newton

Explanation:

Given the following data;

Mass of car = 1000kg

Acceleration due to gravity = 9.8m/s²

To find the weight of the car;

Weight is given by the formula;

Weight = mass * acceleration due to gravity

Substituting into the equation, we have;

Weight = 1000*9.8

Weight = 9800Newton

7 0

3 years ago

An aircraft is moving horizontally with a speed of 50m/s, at the height of 2km, an object is dropped from the aircraft. What is

posledela

Explanation:

use the diagram^

horizontal velocity of the object nvr changes, it'll stay 50m/s till it hits the ground

initial vertical velocity = 0

to find the final vertical velocity, use the formula:

$v {}^{2} = u {}^{2} + 2as$

where u = 0m/s, a = 9.8m/s², and s = 2000m

solve for v.

for time taken to reach ground, use the formula:

$v = u + at$

where v = the value for v u calculated above, u = 0 m/s, a = 9.8m/s² and solve for t.

7 0

3 years ago