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Aleonysh [2.5K]
3 years ago
10

What does the negative sign in F = –kx mean?

Physics
1 answer:
Andru [333]3 years ago
3 0
The force is opposite to the displacement
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In a sea community near the floor of the ocean, a great white shark summons a goby fish to attach itself under its stomach. The
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Answer:

Commensalism

Explanation:

Commensalism is one example of the behavior of a goby and shark.

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A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is
ollegr [7]
<span>F = ma
</span>Ff = μ*Fn
<span>Fn = Fw
</span>Fw = mg 

<span>So we have: </span>

<span>Ff = μmg </span>

<span>And </span>

<span>Ff = ma </span>

<span>So... </span>

<span>μmg = ma </span><span> </span>

<span>μg = a </span>

<span>And we can solve for the acceleration: </span>

<span>(0.15)(9.81 m/s²) = a </span>

<span>a = 1.47 m/s² </span>
8 0
3 years ago
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Suppose the total momentum of two masses before a collision is 100 kg m/s. What is the total momentum of the two masses after th
soldier1979 [14.2K]
No, momentum is conserved so:
momentum before=momentum after
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4 0
3 years ago
As a 5.0 x 102 N basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floo
s2008m [1.1K]
Here is your answer:

First find the notations:

5.0×10^2=500.
1.0×10^3=1,000

Then you multiply:

1,000×500=500,000

Your answer is...
=500,000 or 5.0×10^4
8 0
4 years ago
Air flows from a reservoir in which the pressure is kept at 124 kPa through a convergent–divergent nozzle and exhausts to the
ch4aika [34]

Answer:

ΔP = 986 Kpa

Explanation:

The solution is given in the pictures below

4 0
3 years ago
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