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yKpoI14uk [10]
3 years ago
10

Which expression is dimensionally consistent with anexpression that would yield a value for time-1?(v is velocity, x is distance

, and t istime)
a. v/x
b. v2/x
c. x/t
d. v2/t
e. x/v
Physics
1 answer:
DerKrebs [107]3 years ago
5 0
<h2>Option A is the correct answer.</h2>

Explanation:

Here we need to find an expression that would yield a value for time⁻¹

We know that

              Velocity = Displacement ÷ Time

              v = x/t

Option A :

                 \frac{v}{x}=\frac{\frac{x}{t}}{x}=\frac{1}{t}=t^{-1}

               Option A is correct

Option B :

                 \frac{v^2}{x}=\frac{\frac{x^2}{t^2}}{x}=\frac{x}{t^2}

               Option B is not correct

Option C :

                 \frac{x}{t}

               Option C is not correct

Option D :

                 \frac{v^2}{t}=\frac{\frac{x^2}{t^2}}{t}=\frac{x^2}{t^3}

               Option D is not correct

Option E :

                \frac{x}{v}=\frac{x}{\frac{x}{t}}=t

               Option E is not correct

Option A is the correct answer.

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Which method involves using tools to control invasive species?
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Mechanical control

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3 years ago
Three sharks are located at the vertices of an equilateral triangle whose side equals LL. They all start moving simultaneously w
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Answer:

They will never meet.

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Given that three sharks are located at the vertices of an equilateral triangle whose side equals LL. They all start moving simultaneously with a constant speed vv, with the first shark heading constantly toward the second, the second toward the third, and the third toward the first. How soon will the sharks converge at one point ?

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2 years ago
A 45.0-kg person steps on a scale in an elevator. The scale reads 460 n. What is the magnitude of the acceleration of the elevat
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Answer:

The magnitude of the acceleration of the elevator is 0.422 m/s²

Explanation:

Lets explain how to solve the problem

Due to Newton's Law ∑ Forces in direction of motion is equal to mass

multiplied by the acceleration

We have here two forces 460 N in direction of motion and the weight

of the person in opposite direction of motion

The weight of the person is his mass multiplied by the acceleration of

gravity

→ W = mg , where m is the mass and g is the acceleration of gravity

→ m = 45 kg and g = 9.8 m/s²

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Divide both sides by 45

→ a = 0.422 m/s²

<em>The magnitude of the acceleration of the elevator is 0.422 m/s²</em>

4 0
3 years ago
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