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3 years ago

Which of the following is the most appropriate unit to describe the time you can drive a car based on the amount of gas?

Physics

2 answers:

vredina [299]3 years ago

8 0

The answer is A. Minutes per gallon, because the independent quantity is the gallons

Alik [6]3 years ago

4 0

<h3><u>Answer;</u></h3>

A. Minutes per gallon, because the independent quantity is the gallons

<h3><u>Explanation;</u></h3>

<em><u>It doesn't matter how much time you have, but the amount of time or distance you can travel is affected (dependent) on how much gas you have.</u></em>
<em><u>Independent quantity</u></em> represent the value that is being manipulated in an experiment by the experimenter, in this case it is the gallons, while <em><u>the dependent quantity</u></em> represent a quantity whose value depends on the manipulations on independent quantity.

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A small, 150 g cart is moving at 1.60 m/s on a frictionless track when it collides with a larger, 5.00 kg cart at rest. After th

NemiM [27]

Answer:

Mass of larger cart will be 0.0213 m /sec

Explanation:

We have given mass of small cart $m_1=150gram=0.150kg$

Initial velocity of small cart $v_{1i}=1.6m/sec$

Mass of larger block $m_2=5kg$

Initial velocity of larger cart $v_{2i}=0m/sec$

After the collision velocity of smaller cart $v_{1f}=-0.890m/sec$

Now according conservation of momentum

$m_1v_{1i}+m_2v_{2i}=m_1v{1f}+m_2v_{2f}$

$0.150\times 1.6+5\times 0=0.150\times -0.890+5\times v_{2f}$

$5\times v_{2f}=0.1065$

$v_{2f}=0.0213m/sec$

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3 years ago

Sarah owns book store she is planning to stock some books by a famous author but she has a tight budget and she is not sure whet

disa [49]

The scarce resource in this scenario is money ... specifically, the
extent of Sarah's budget for purchasing books to stock.

Whichever category of books she decides on, the number of books
that wind up on the shelves of her shop is a dependent variable, and
will directly depend on the amount she decides to spend to buy them.

7 0

3 years ago

Which type of wave does NOT have a crest?

Nostrana [21]

You answer is b an oscillating wave

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3 years ago

Read 2 more answers

A car with a mass of 1,600 kg is traveling at a speed of 25 m/s. What is the momentum of

tamaranim1 [39]

40,000 kg m/s
Momentum = mass * velocity
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3 0

3 years ago

A generator with �# ' = 300 V and Zg = 50 Ω is connected to a load ZL = 75 Ω through a 50-Ω lossless line of length l = 0.15λ. (

ki77a [65]

Answer:

a. Zin = 41.25 - j 16.35 Ω

b. V₁ = 143. 6 e⁻ ¹¹ ⁴⁶

c. Pin = 216 w

d. PL = Pin = 216 w

e. Pg = 478.4 w , Pzg = 262.4 w

Explanation:

Zin = Zo * [ ZL + j Zo Tan (βl) ] / [ Zo + j ZL Tan (βl) ]

βl = 2π / λ * 0.15 λ = 54 °

Zin = 50 * [ 75 + j 50 Tan (54) ] / [ 50 + j 75 Tan (54) ]

Zin = 41.25 - j 16.35 Ω

I₁ = Vg / Zg + Zin ⇒ I₁ = 300 / 41.25 - j 16.35 = 3.24 e ¹⁰ ¹⁶

V₁ = I₁ * Zin = 3.24 e ¹⁰ ¹⁶ * ( 41.25 - j 16.35)

V₁ = 143. 6 e⁻ ¹¹ ⁴⁶

Pin = ¹/₂ * Re * [V₁ * I₁]

Pin = ¹/₂ * 143.6 ⁻¹¹ ⁴⁶ * 3.24 e ⁻ ¹⁰ ¹⁶ = 143.6 * 3.24 / 2 * cos (21.62)

Pin = 216 w

The power PL and Pin are the same as the line is lossless input to the line ends up in the load so

PL = Pin

PL = 216 w

Pg Generator

Pg = ¹/₂ * Re * [ V₁ * I₁ ] = 486 * cos (10.16)

Pg = 478.4 w

Pzg dissipated

Pzg = ¹/₂ * I² * Zg = ¹/₂ * 3.24² * 50

Pzg = 262.4 w

4 0

4 years ago