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natulia [17]
3 years ago
9

1. (02.02 LC)

Physics
1 answer:
Anastaziya [24]3 years ago
6 0
1. The main benefit of a technical school certification is more time spent perfecting skills compared to college
2. Juanita, who lives with her brother, has saved $12,000 for a down payment on her own house. Her financial planner suggests she look for a savings account that offers compound interest accounts. Juanita should take his advice because: She will earn interest on the initial deposit, as well as interest earned.
3. Jared's friends invite him to dinner at a local restaurant that serves Cuban food. Jared declines the offer because he dislikes the flavors in Cuban dishes. The best representation of Jared’s decision is Preference for another style of food
4. One bank offers a 4% variable rate loan, while a competitor offers a 3% fixed rate loan over the same period. Assuming no other differences between the loans, a customer should choose the fixed rate loan because the interest rate is lower and will not increase
5. If Juliet consistently buys health insurance for twenty years but never suffers a costly illness, were her premium payments wasted? No, if the safety of being insured was worth more to her than the monetary cost of the premiums
6. A period of economic stability began in the 1980s. In 2001, prices began to increase. In 2007, an economic crisis caused prices to fall. 2007 would be considered the peak of this cycle because from there, the prices start to fall.
7. If a series of events results in a decrease in investments in U.S. businesses, It would result to a CONTRACTION on the U.S. economy
8 The Medicine industry benefits from government subsidies.
9. A supply and demand graph, showing quantity on the x axis and price is on y axis. Red supply line S rises up and to the right f
There is SURPLUS if the line ""Artificial Price"" were above the intersection of the supply and demand lines.
10. How are start-up costs related to natural monopolies?
High start-up costs prevent others from offering the same service in a natural monopoly.
11. The function of the Federal Reserve System is to CONTROL THE MONEY SUPPLY

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A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.64 10-2 kg/s. the density of the gasoline is 735
Irina18 [472]
Given:
Gasoline pumping rate, R = 5.64 x 10⁻² kg/s
Density of gasoline, D = 735 kg/m³
Radius of fuel line, r = 3.43 x 10⁻³ m

Calculate the cross sectional area of the fuel line.
A = πr² = π(3.43 x 10⁻³ m)² = 3.6961 x 10⁻⁵ m²

Let v =  speed of pumping the gasoline, m/s
Then the mass flow rate is 
M = AvD = (3.6961 x 10⁻⁵ m²)*(v m/s)*(735 kg/m³) = 0.027166v kg/s

The gasoline pumping rate is given as 5.64 x 10⁻² kg/s, therefore
0.027166v = 0.0564
v = 2.076 m/s

Answer:  2.076 m/s
The gasoline moves through the fuel line at 2.076 m/s.
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The -is the process by which gases in the atmosphere absorb and reradiate heat?
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Water vapor and carbon dioxide

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Difference between reproducibility and replicability
victus00 [196]
Suppose you are doing an experiment where you determine the value of one parameter, say density of a liquid. You have two methods in doing this. By finding the mass and volume, and by using a densitometer. Reproducibility is when you get the same value of density for both methods. Replicability is when you have similar results in one method. So, replicability is a measure of precision, while reproducibility is a measure of accuracy. 
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An ideal spring hangs from the ceiling. A 1.25-kg mass is hung from the spring. After all vibrations have died away, the spring
ch4aika [34]

The kinetic energy of the mass at the instant it passes back through its equilibrium position is about 1.20 J

\texttt{ }

<h3>Further explanation</h3>

Let's recall Elastic Potential Energy formula as follows:

\boxed{E_p = \frac{1}{2}k x^2}

where:

<em>Ep = elastic potential energy ( J )</em>

<em>k = spring constant ( N/m )</em>

<em>x = spring extension ( compression ) ( m )</em>

Let us now tackle the problem!

\texttt{ }

<u>Given:</u>

mass of object = m = 1.25 kg

initial extension = x = 0.0275 m

final extension = x' = 0.0735 - 0.0275 = 0.0460 m

<u>Asked:</u>

kinetic energy = Ek = ?

<u>Solution:</u>

<em>Firstly , we will calculate the spring constant by using </em><em>Hooke's Law</em><em> as follows:</em>

F = k x

mg = k x

k = mg \div x

k = 1.25(9.8) \div 0.0275

k = 445 \frac{5}{11} \texttt{ N/m}

\texttt{ }

<em>Next , we will use </em><em>Conservation of Energy</em><em> formula to solve this problem:</em>

Ep_1 + Ek_1 = Ep_2 + Ek_2

\frac{1}{2}k (x')^2 + mgh + 0 = \frac{1}{2}k x^2 + Ek

Ek = \frac{1}{2}k (x')^2 + mgh - \frac{1}{2}k x^2

Ek = \frac{1}{2}k ( (x')^2 - x^2 ) + mgh

Ek = \frac{1}{2}(445 \frac{5}{11}) ( 0.0460^2 - 0.0275^2 ) + 1.25(9.8)(0.0735)

\boxed {Ek \approx 1.20 \texttt{ J}}

\texttt{ }

<h3>Learn more</h3>
  • Kinetic Energy : brainly.com/question/692781
  • Acceleration : brainly.com/question/2283922
  • The Speed of Car : brainly.com/question/568302
  • Young Modulus : brainly.com/question/9202964
  • Simple Harmonic Motion : brainly.com/question/12069840

\texttt{ }

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Elasticity

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How does newtons first two laws of motion apply to the toy car?

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