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4 years ago

A water skier has a mass of 86 kg and accelerates at 2 m/s2. What is the net force acting on him?

Physics

1 answer:

Korolek [52]4 years ago

8 0

Answer:

F = 172 N

Explanation:

Newton's second law of motion gives the amount of force acting on an object. Mathematically, it is given by :

F=ma

Put m =86 kg and a = 2 m/s²

So,

$F=(86\times 2)\ N\\\\F=172\ N$

Hence, the net force is 172 N.

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Answer:

Series combination:

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Parallel combination:

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Explanation:

Resistance: Resistance is the ratio of voltage to the current.

$R=\frac{V}{I}$

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There are two types of resistance combinations.

series combination
parallel combination.

Series combination: If the ending point of one resistance is connected to the starting point of other resistance that combination is known as series combination.

If R₁,R₂ and R₃ are connected in series combination.

Then equivalent resistance = R₁+R₂+R₃

Parallel combination: If the ending point and the starting point of the all resistance are the same points that combination is known as parallel combination.

If R₁,R₂ and R₃ are connected in parallel combination.

Then equivalent resistance $\frac{1}{R}= \frac{1}{R_1}+ \frac{1}{R_2}+\frac{1}{R_3}$

Here R₁=7Ω and R₂=3Ω

If R₁ and R₂ connected in series combination

Then equivalent resistance = (7+3) Ω

=10Ω

If R₁ and R₂ connected in parallel combination

Then equivalent resistance $=\frac{1}{(\frac{1}{7} +\frac{1}{3})} \Omega$

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Well.. I hope it helps you..

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