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inna [77]
2 years ago
6

Evaluate the numerical value of the vertical velocity of the car at time t=0. 25s using the expression from part d, where y0=0.

75m, α=0. 95s−1, and ω=6. 3s−1.
SAT
1 answer:
Alex73 [517]2 years ago
7 0

The vertical velocity of the car at the given position and time is 4.905 m/s.

The given parameters:

  • Initial angular velocity, \omega_0 = 6.3 rad/s
  • Time of motion, t = 0.25 s
  • Vertical displacement, y = 0.75 m
  • Angular acceleration, \alpha  = 0.95 \ rad/s^2

<h3>What is vertical velocity?</h3>
  • This is the linear velocity of an object in a vertical direction.

The angular velocity of an object in a circular motion is given as;

\omega_f = \omega _0 + \alpha t\\\\\omega _f = 6.3 \ +\  0.95 \times 0.25 \\\\\omega _f = 6.54 \ rad/s

The vertical velocity of the car at the given position and time is calculated as follows;

v = \omega r\\\\v = \omega_f y\\\\v = (6.54 \ rad/s)\times (0.75\ m)\\\\v = 4.905 \ m/s

Thus, the vertical velocity of the car at the given position and time is 4.905 m/s.

Learn more about vertical velocity here: brainly.com/question/7358392

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explica, con un ejemplo, por lo menos cinco cualidades positivas de ti mismo (de tu carácter, mentales, en el terreno de las rel
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Answer:

Un cualidad en mi caracter es la templanza. Me cuido mucho de lo que vaya a comer. La segunda cualidad positiva mental es que lo que me propongo logro. En el terreno de las relaciones tengo dos. Por ejemplo con mis padres soy bueno hijo y con mi amiga siempre dispuesto de ayudar. En mi grupo de escuela me conocen como una persona amable. Finalmente, en la iglesia yo soy el que ayuda a los ancianos.

Explanation:

One quality of my character is temperance. I take good care of what I am going to eat. The second positive mental quality is whatever I set to accomplish, I will accomplish. In the personal relationships arena, I have two. For example, I am a good son with my parents and my friend I help her in whatever she may need. Within my school, people know me as amicable. Finally, in my church, I help the elderly.

8 0
4 years ago
The concept of time value money is important to financial decision making because
USPshnik [31]

The concept of time value of money is very important and essential to financial decision-making because: D) all of these.

<h3>What is money?</h3>

Money is any formally recognized economic unit that's universally accepted as a medium of exchange for goods and services, as well as repayment of debts such as loans, taxes across the world.

<h3>What is time value of money?</h3>

Time value of money can be defined as a measure of the difference in values of money in comparison to when it is received.

In conclusion, we can infer and logically deduce that the concept of time value of money is very important and essential to financial decision-making because it emphasizes earning a return of interest on investment and it applies to future cash flows.

Read more on money here: brainly.com/question/11252085

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Complete Question:

The concept of time value of money is important to financial decision making because?

A) it emphasizes earning a return of interest on the money you invested.

B) it recognizes that $1 today has more value than $1 received a year from now

C) it can be applied to future cash flows in order to compare different streams of income.

D) all of these.

3 0
2 years ago
Weights of four-year-olds are Normally distributed, with a mean of 40 pounds and a standard deviation of 1.3 pounds. At his four
TiliK225 [7]

Answer:

40.7 pounds

Explanation:

Given that:

Mean, m = 40

Standard deviation, σ = 1.3

Weight greater than 30% = 0.3

P(x > Z) = 0.3

Z = (x - m) / σ

P(x > Z) = 0.3

Z = 0.524 ( Z probability calculator)

Hence,

0.524 = (x - 40) / 1.3

0.524 * 1.3 = x - 40

0.6812 = x - 40

x = 0.6812 + 40

x = 40.6812

x = 40.7

Hence, Marlon weighs about 40.7

7 0
3 years ago
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