2 years ago

I need this done pls

Physics

1 answer:

Aleonysh [2.5K]2 years ago

5 0

Answer:

all the details are in the attached picture, the answers are marked with colour.

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11Alexandr11 [23.1K]

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3 years ago

How many atoms are in a sample of 2.39 moles of neon (Ne) atoms?

Reil [10]

<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

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3 years ago

Why should you use control while during an experiment?

Sergio039 [100]

To provide a greater certainty that the observed results are not by chance.

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3 years ago

A digital signal differs from an analog signal because it a.consists of a current that changes smoothly. b. consists of a curren

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d.it is used in electronic devices

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3 years ago

5) You pull a 10.0 kg wagon along a flat road. You exert a force of 80.0 N at an angle of 30.0 degrees above the horizontal whil

Lelu [443]

Consult the attached free body diagram. The only forces doing work on the wagon are the frictional force opposing the wagon's motion and the horizontal component of the applied force.

By Newton's second law, the net vertical force is

• ∑ F [v] = n + (80.0 N) sin(30.0°) - mg = 0

where a is the acceleration of the wagon.

Solve for n (the magnitude of the normal force) :

n = (10.0 kg) g - (80.0 N) sin(30.0°) = 58.0 N

Then

f = 0.500 (58.0 N) = 29.0 N

Meanwhile, the horizontal component of the applied force has magnitude

(80.0 N) cos(30.0°) ≈ 69.3 N

Now calculate the work done by either force.

• friction: -(29.0 N) (10.0 m) = -290. J

• pull: (69.3 N) (10.0 m) = 693 J

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2 years ago