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KatRina [158]
3 years ago
13

Mechanical energy is the difference between the kinetic and potential energies of an object. True or False?

Physics
2 answers:
murzikaleks [220]3 years ago
7 0

Answer:

false

Explanation:

Fofino [41]3 years ago
4 0

Answer:

False

Explanation:

Its the sum of those not the difference between them

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Does a physical change affect the identity of a substance? Does a chemical change affect the identity of a substance?
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Yes or no because I don't know and im tired
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3 years ago
A mass weighing 4 lb stretches a spring 2 in. Suppose that the mass is given an additional 6-in displacement in the positive dir
givi [52]

Answer:

\frac{1}{8} y'' + 2y' + 24y=0

Explanation:

The standard form of the 2nd order differential equation governing the motion of mass-spring system is given by

my'' + \zeta y' + ky=0

Where m is the mass, ζ is the damping constant, and k is the spring constant.

The spring constant k can be found by

w - kL=0

mg - kL=0

4 - k\frac{1}{6}=0

k = 4\times 6 =24

The damping constant can be found by

F = -\zeta y'

6 = 3\zeta

\zeta = \frac{6}{3} = 2

Finally, the mass m can be found by

w = 4

mg=4

m = \frac{4}{g}

Where g is approximately 32 ft/s²

m = \frac{4}{32} = \frac{1}{8}

Therefore, the required differential equation is

my'' + \zeta y' + ky=0

\frac{1}{8} y'' + 2y' + 24y=0

The initial position is

y(0) = \frac{1}{2}

The initial velocity is

y'(0) = 0

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3 years ago
The volume of a gas is reduced when the temperature is decreased
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if you crash your car how could you decrease the damage to you or the car using the concept of impulse
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Explanation:

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