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3 years ago

Ocean water conducts electrical current because it contains _____.

Physics

2 answers:

xeze [42]3 years ago

8 0

Answer:

electrolytes

Explanation:

icang [17]3 years ago

3 0

<span>Ocean water conducts electrical current because it contains electrolytes. Electrolytes are good conductors of electricity, and are naturally present in appropriate amounts in bodies of water. However, pure water (without electrolytes or metals) is not a conductor of electricity. </span>

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Answer:1.5

Explanation:

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3 years ago

Find an equation relating the rate of change of kinetic energy to the rate of change of velocity

alexdok [17]

Answer:

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Explanation:

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3 years ago

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velikii [3]

Answer:

$\displaystyle a(5)=-32$

Explanation:

<u>Instant Acceleration</u>

The kinetic magnitudes are usually related as scalar or vector equations. By doing so, we are assuming the acceleration is constant over time. But when the acceleration is variable, the relations are in the form of calculus equations, specifically using derivatives and/or integrals.

Let f(t) be the distance traveled by an object as a function of the time t. The instant speed v(t) is defined as:

$\displaystyle v(t)=\frac{df}{dt}$

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$\displaystyle a(t)=\frac{dv}{dt}$

Or equivalently

$\displaystyle a(t)=\frac{d^2f}{d^2t}$

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$f(t)=-16t^2 +238t+3$

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$\displaystyle v(t)=-32t+238$

And the acceleration

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It's a constant value regardless of the time t, thus

$\boxed{\displaystyle a(5)=-32}$

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3 years ago

A car is traveling at 21m/s. It accelerates at 1.4m/s2 for 11s. How fast is the car moving after the acceleration?

nata0808 [166]

Answer:

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4 years ago