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2 years ago

How do i know which equation to use for dimensional analysis?

1 answer:

7 0

You look at the units you want, then try to figure out which units ti multiply by to get the units you have to match the units you want. For example, if you want kg/m^3 and have m/s

You can see that you have a length/time(lets denote it d/t for distance over time) and want mass/volume (lets denote it m/d^3). d/t multiplied by time=d but we want m/d^3 so lets multiply our original d/t by time(t) and mass(m) so d/t(t) (m) =dm. However, we want m/d^3 so we will also have to divide by d^4.

(d/t)(t)(m) /(d^4)=m/d^3 = mass/length^3 =mass/volume which was what we wanted our end result to be.

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Explain what is the capacity of a battery in your own words

Vinil7 [7]

Battery capacity (AH) is defined as a product of the current that is drawn from the battery while the battery is able to supply the load until its voltage is dropped to lower than a certain value for each cell.

4 0

2 years ago

Identify the y-intercept.

Dmitry [639]

Answer:

1 is the y intercept

Explanation:

the y intercept is where the line crosses the y axis

5 0

2 years ago

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Suppose you are holding a container of gas, and the container has a fixed volume (i.e. it won't stretch or give to allow for exp

USPshnik [31]

Answer: if the pressure in the container is doubled, then the temperature will double too.

Justification:

You can rely on Gay-Lussac's law for ideal gases to answer the question.

According to that law, the pressure and temperature of a fixed amount of gas in a closed rigid container (constant volume) varie in direct proportion.

Mathematically, you can write in this way:

P/T = k

P₁ / T₁ = P₂ / T₂

That means, that if the pressure in the container is doubled, then the temperature will double too.

You can see that mathematically:

P₂ = 2 P₁

T₂ = (T₁ / P₁)(P₂) = (T₁ / P₁) (2 P₁) = 2 T₁

6 0

2 years ago

Read 2 more answers

A box has a weight of 150 N and is being pulled across a horizontal floor by a force that has a magnitude of 110 N. The pulling

ivann1987 [24]

Answer:

42.99°

Explanation:

$F_h$ = Kinetic friction force

$F_{\theta}$ = Pulling force at angle $\theta$

$N_h$ = Weight of the box = 150 N

Kinetic friction force

$F_h=\muN_h$

Pulling force at angle $\theta$

$F_{\theta}=\muN_{\theta}$

N = Pulling force

According to question

$\frac{F_h}{F_{\theta}}=\frac{2}{1}\\\Rightarrow \frac{\muN_h}{\muN_{\theta}}=2\\\Rightarrow \frac{N_h}{N_{\theta}}=2\\\Rightarrow N_{\theta}=\frac{N_h}{2}\\\Rightarrow N_{\theta}=\frac{150}{2}\\\Rightarrow N_{\theta}=75\ N$