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hichkok12 [17]
3 years ago
9

Sarah backstrokes at an average speed of 8 meters per second, how long will it take her to

Physics
1 answer:
never [62]3 years ago
4 0

Explanation:

Distance = speed × time

800 m = (8 m/s) t

t = 100 s

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Archy [21]

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5 0
3 years ago
A block with mass m is pulled horizontally with a force F_pull leading to an acceleration a along a rough, flat surface.
Simora [160]

Answer:

\mu_k=\frac{a}{g}

Explanation:

The force of kinetic friction on the block is defined as:

F_k=\mu_kN

Where \mu_k is the coefficient of kinetic friction between the block and the surface and N is the normal force, which is always perpendicular to the surface that the object contacts. So, according to the free body diagram of the block, we have:

N=mg\\F_k=F=ma

Replacing this in the first equation and solving for \mu_k:

ma=\mu_k(mg)\\\mu_k=\frac{a}{g}

6 0
3 years ago
1. Viruses are unique among infectious agents because they are
yuradex [85]
1,) C

2,) C

Hope this helps
4 0
3 years ago
ou are looking for a new tennis partner. Which of these people would most likely demonstrate good sportsmanship based on the inf
Dennis_Churaev [7]
<h2><u>Answer:</u></h2>

As you are looking for a new tennis partner. People should keep in mind that they should go for the one who most likely demonstrate good sportsmanship

Luis, when you pursue the principles in tennis, you realize when to talk up, you don't blast a racquet or shout, holler.

Whatever it is following the principles and being respectful it the most ideal approach.

7 0
3 years ago
The current through a certain heater wire is found to be fairly independent of its temperature. If the current through the heate
irina [24]

Answer:

(c) increase by a factor of four

Explanation:

energy = power x time, and power = resistance x current ^2. 2^2 = 4.

5 0
3 years ago
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