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Andrews [41]
3 years ago
10

Which statement best defines work? A. Work is the time it takes to move an object once acted upon by a force. B. Work occurs whe

n balanced forces act on an object and cause movement in the direction of these forces. C. Work occurs when a force causes motion of an object, and this motion is in the same direction of the applied force. D. Work is the distance over time that an object moves once acted on by a force.
Physics
2 answers:
BigorU [14]3 years ago
4 0

a. work is the time it takes to move an object once acted upon by a force


Nitella [24]3 years ago
4 0
Work is best defined as occurring when a <span>force causes the motion of an object, and this motion is in the same direction of the applied force. Work can be calculated by the following formula: w = fxd or work equals force times distance.</span>
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In which beaker was the average kinetic energy of the particles the greatest?
notka56 [123]
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3 years ago
A 30.0-kgkg box is being pulled across a carpeted floor by a horizontal force of 230 NN , against a friction force of 210 NN . W
Agata [3.3K]

Answer:

The acceleration of the box is 0.67 m/s²

Explanation:

Given that,

Mass of box = 30.0 kg

Horizontal force = 230 N

Friction force = 210 N

We need to calculate the acceleration of the box

Using balance equation

F-f_{k}=ma

a=\dfrac{F-f_{k}}{m}

Where, F = horizontal force

f_{k} =frictional force

m= mass of box

a = acceleration

Put the value into the formula

a=\dfrac{230-210}{30}

a=0.67\ m/s^2

Hence, The acceleration of the box is 0.67 m/s²

4 0
3 years ago
What do we call the distance labeled from A to B and what could we do to the note played on an instrument to change that distanc
Korvikt [17]

Correct answer choice is :


A) From A to B is known as the wavelength and changing the pitch of the note will change its length.


Explanation:


The amount or quantity of period within two things, points, lines, etc. the state or fact of existing separate in space, as of one thing from another; remoteness. a linear amount of space: Seven miles is a distance too great to walk in an hour. Distance is a scalar quantity describing the interval in two points. It is just the measure of the interval.

7 0
3 years ago
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What do you ocean waves and sound waves have in common?
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3 0
4 years ago
What is the magnitude of g at a height above Earth's surface where free-fall acceleration equals 6.5m/s^2?
prohojiy [21]

You've given the answer, right there in your question.

The "magnitude of gravity" is described in terms of the acceleration
due to it, and you just told us what that is.

We can also notice that the figure you gave is about 0.66 of the
acceleration due to gravity on the Earth's surface. That tells us that
the distance from the Earth's center at that height is about 

                     (1 / √0.66) = 1.23 times

the Earth's radius, so the height is about  910 miles above the surface.


7 0
4 years ago
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