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4 years ago

A bird, accelerating from rest at a constant

Physics

1 answer:

irina [24]4 years ago

4 0

Answer:

Average velocity of the bird is 2.54 m/s.

Explanation:

Given that,

Initial speed of the bird, u = 0

It experiences a displacement of, d = 28 m

Time taken, t = 11 s

We need to find the average velocity of the bird. Let v is the average velocity. Mathematically, it is given by :

$v=\dfrac{d}{t}$

$v=\dfrac{28\ m}{11\ s}$

v = 2.54 m/s

So, the average velocity of the bird is 2.54 m/s. Hence, this is the required solution.

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If a system reliability of 0.998 is required, what reliability of two components in series is required?

Yakvenalex [24]

Two components in the series have dependability of $0.996$ .

We need both two components to function in order to determine the engine's reliability. Since each component has dependability of $0.998$ , we must determine the likelihood that both components will function in order to determine the engine's reliability.

The possibility that a product, system, or service will function as intended for a predetermined amount of time, or that it will run faultlessly in a predetermined environment, is known as reliability.

By multiplying each of the $10$ reliability coefficients, we may calculate this probability:

$P = 0.998^2 = 0.996004$

P is equal to $0.9966$ after being rounded to three decimal places.

The engine has a dependability rating of $0.996$ .

Hence,

Two components connected in series have dependability of $0.996$ .

<h3>What is the compound of reliability ?</h3>

Reliability and failure probability are complimentary, or $F= 1 - R$ .

In various cases, the distinctive qualities of a series arrangement will be demonstrated. $R = R 1 R 2$ is the resultant reliability of two components.

A component's reliability is assessed in light of the application for which it will be utilised. An operational profile gives a description of the situation. Software reliability can be calculated or measured.

To learn more about compound of reliability, Visit:

brainly.com/question/14972427

#SPJ4

3 0

2 years ago

An air bubble released by a deep-water diver, 115 m below the surface of a lake, has a volume of 1.60 cm3. The surface of the la

Kryger [21]

Answer:

The value is $V_2 = 1.9396 *10^{-5} \ m^3$

Explanation:

From the question we are told that

The depth at which the bubble is released is $h = 115 \ m$

The volume of the air bubble is $V = 1.60 cm^3 = 1.60 *10^{-6} \ m^3$

Generally from the ideal gas law

$PV = nRT$

Given that n , R , T are constant we have that

$PV = constant$

$P_1 V_1=P_2 V_2$

Here $P_1$ is the pressure of the bubble at the depth where it is released which i mathematically represented as

$P_1 = P_a + P$

Here $P_a$ is the atmospheric pressure with value $P_a = 101325 \ Pa$

and $P$ is the pressure due to the depth which is mathematically represented as

$P = \rho * g * h$

$P = 1000 * 9.8*115$

=> $P = 1127000\ Pa$

Here $\rho$ is the density of pure water with value $\rho = 1000 \ kg/m^3$

$g = 9.8 \ m/s^2$

$V_1$ is the volume of the bubble at the depth where it is released

$P_2$ is the pressure of the bubble at the surface which is equivalent to the atmospheric temperature

$V_2$ is the volume of the bubble at the surface

$V_2 = \frac{ P_1 * V_1}{ P_2}$

=> $V_2 = \frac{(Pa+ P) * V_1}{P_a}$

=> $V_2 = \frac{101325 + 1127000 * (1.60 *10^{-6})}{ 101325 }$

=> $V_2 = 1.9396 *10^{-5} \ m^3$

4 0

3 years ago

Tell how electromagnetic waves differ from mechanical waves

Fudgin [204]

<span>Electromagnetic and mechanical waves differ in that electromagnetic waves are always longitudinal and do not require a known medium, while mechanical waves are either longitudinal or compression waves and require a medium. All known electromagnetic waves are also known as forms of light.</span>

3 0

3 years ago

If the moon disappeared what effect would this have on the earths tides

iogann1982 [59]

The moon has a huge impact on the tides. With the Moon gone, the oceans would become much calmer. The Sun still has its effect on them known as the solar tides. Surfers wouldn't be completely devoid of waves.

4 0

3 years ago

Read 2 more answers

An alligator swims to the left with a constant velocity of 5 S/M

Goshia [24]

Answer:

t = 0.85[s]

Explanation:

To solve this problem we must make a complete description of this. By doing an internet search, we find the description of this problem as if of the question.

<u>Description</u>

<u />

"An alligator swims to the left with a constant velocity of 5 m s when the alligator season a bird straight ahead the alligator speeds up with a constant acceleration of 3 m/s^2 leftward until it reaches a final velocity of 35 Ms left work how many seconds does it take the alligator to speed up from 5 m/s to 35 m/s".

To solve this problem we must identify the initial data:

v0 = initial velocity = 5 [m/s]

a = acceleration = 3 [m/s^2]

vf = final velocity = 35[m/s]

t = time = ?

Using the following kinematic equation, we can find the time that is required.

$v_{f}=v_{0}+a*t\\35=5+35*t\\t=\frac{35-5}{35} \\t=0.85[s]$

8 0

4 years ago