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3 years ago

A 15-N force and a 45-N force act on an object in opposite directions

Physics

1 answer:

lidiya [134]3 years ago

8 0

Answer:

30-N

Explanation:

Because they are both acting on an object going opposite directions, then you simply subtract the 15 from 45 as 45N of force is stronger than 15N of force.

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Answer:

They are all a cycle!

Explanation:

They just are all cycles.

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3 years ago

The tip of the fan blade is 0.61 m from the center of the fan. The fan turns at a constant speed and completes 2 rotation every

Goryan [66]

Answer:

What is the centripetal acceleration of the tip of the fan blade?

6.0 m/s2

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4 years ago

A uniform electric field contains a number of particles. All are experiencing forces in the same direction as the electric field

myrzilka [38]

Answer: D

All the particles must be uncharged

Explanation:

If all the particles are positively charged, then there will be force of repulsion between them which will give different directions away from each other. The same is applicable if they are all negatively charged.

If the particles are positively and negatively charged, their will be force of attraction between them which will give different directions towards each other.

For all to be experiencing forces in the same direction, We can conclude that

All the particles must be uncharged.

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3 years ago

Which element would have the lowest electronegativity? (1 point)O an element with a large number of valence electrons and a larg

nekit [7.7K]

Answer:

an electron with element with large number of valence electron and large atomic radius

8 0

3 years ago

PLZ HELP ASAP With number 10 above

raketka [301]

Answer:

P = 1500 Watt

Explanation:

Mechanical Work and Power

Mechanical work is the amount of energy transferred by a force.

Being F the magnitude of the force vector and s the distance, the work is calculated as:

W=F.s

Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.

The power can be calculated as:

$\displaystyle P=\frac {W}{t}$

Where W is the work and t is the time.

The force to be considered is the weight of the mass of m=100 kg, $g= 10\ m/s^2$ :

F = 100 * 10 = 1000 N

The distance is s=3 m, thus the work done by the weight lifter is:

W = 1000 N * 3 m

W = 3000 J

Finally, the power is:

$\displaystyle P=\frac {3000}{2}$

P = 1500 Watt

5 0

3 years ago