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3 years ago

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A balloon is filled with air to a capacity of 6 L while underwater at a depth where the water pressure is 210 kPA. To what volum

e would this balloon expand if it suddenly rose to the surface.

1 answer:

Colt1911 [192]3 years ago

7 0

Answer: Thus the balloon will expand to 12.5 L if it suddenly rose to the surface.

Explanation:

To calculate the new volume, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.

The equation given by this law is:

$P_1V_1=P_2V_2$

where,

$P_1\text{ and }V_1$ are initial pressure and volume.

$P_2\text{ and }V_2$ are final pressure and volume.

We are given:

$P_1=210kPa\\V_1=6L\\P_2=101kPa\\V_2=?$

Putting values in above equation, we get:

$210\times 6=101\times V_2\\\\V_2=12.5L$

Thus the balloon will expand to 12.5 L if it suddenly rose to the surface.

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Which of the following statements describes integrity? A. honesty regulated by a governmental regulatory committee B. honesty as

dolphi86 [110]

The correct answer is C. Honesty regulated by a person’s sense of right and wrong.

Explanation:

Integrity is a personal quality that encompasses moral and ethical correctness that allows an individual to be honest and behave appropriately in different situations and make decisions. This quality is closely related to morals and ethics because these two factors define what is right or wrong, and therefore determine the correct behaviors. Moreover, these factors might vary with the cultural context; for example, if culture emphasizes the importance of respecting the elderly any form of attack to this population would be considered as opposite to integrity. According to this, integrity is "Honesty regulated by a person’s sense of right and wrong."

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3 years ago

Select the correct statement about osmolarity. a) Osmolarity measures the moles of solute per liter of solution. b) The contents

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Answer:

a) Osmolarity measures the moles of solute per liter of solution.

Explanation:

Osmolarity is defined as the number of moles of solute that contribute to the osmotic pressure, per liter of solution, of solution. That is, the measurement of the solute concentration. The prefix "osmo-" indicates the possible variation of the osmotic pressure in the cells, which will occur when the solution is introduced into the body.

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3 years ago

A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic frictio

Blababa [14]

Answer:

(B) 1.6 m/s^2

Explanation:

The equation of the forces acting on the box in the direction parallel to the slope is:

$mg sin \theta - \mu N = ma$ (1)

where

$mg sin \theta$ is the component of the weight parallel to the slope, with m = 6.0 kg being the mass of the box, g = 9.8 m/s^2 being the acceleration of gravity, $\theta=39^{\circ}$ being the angle of the incline

$\mu N$ is the frictional force, with $\mu = 0.6$ being the coefficient of kinetic friction, N being the normal reaction of the plane

a is the acceleration

The equation of the force along the direction perpendicular to the slope is

$N-mg cos \theta =0$

where $mg cos \theta$ is the component of the weight in the direction perpendicular to the slope. Solving for N,

$N=mg cos \theta$

Substituting into (1), solving for a, we find the acceleration:

$a=gsin \theta- \mu g cos \theta=(9.8)(sin 39^{\circ})-(0.6)(9.8)(cos 39^{\circ})=1.6 m/s^2$

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4 years ago

1. The arctic tern flies from the Arctic to the Antarctic and back every year, a total distance of 22,000 miles! In late summer,

NikAS [45]

Answer:

The average velocity that these birds travel is 122.22 miles per day to the south.

Explanation:

Speed is the physical quantity that expresses the variation in position of an object and as a function of time. In other words, speed is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction.

Speed is expressed mathematically as the quotient between distance and time:

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

where "v" is the speed of the mobile, "d" is the distance traveled by the mobile, and "t" is the time taken by the mobile to carry out the movement.

In this case:

d= 11,000 miles
t=3 months= 90 days ( considering that in 1 month there are 30 days)

Replacing:

$velocity=\frac{11,000 miles}{90 days}$

velocity = 122.22 $\frac{miles}{day}$

<u><em>The average velocity that these birds travel is 122.22 miles per day to the south.</em></u>

8 0

3 years ago

A large airplane typically has three sets of wheels: one at the front and two farther back, one on each side under the wings. Co

Tems11 [23]

(a) The force the ground exerts on each set of rear wheels when the plane is at rest on the runway is 0.743 MN.

(b) The force the ground exerts on the front set of wheels is 0.239 MN.

<h3>Center mass of the airplane</h3>

The concept of center mass of an object can be used to dtermine the mass distribution of the airplane along the line through the center.

<h3>Some assumptions</h3>

The wheels under the wind do not pass through the center line.
The position of the front wheel is constant and it is zero mark (origin).
The rear wheels are at 21.7 m mark

Position of the center mass of the plane is calculated as follows;

Let the position of the center mass, Xcm = y

the center mass is 3 m in front of rear wheels, that is

21.7 - y = 3

y = 21.7 - 3

y = 18.7 m

Xcm = 18.7 m

<h3>Mass of the plane at the position of the rear wheels</h3>

Let the mass of the plane at front wheels = M1

Let the mass of the plane at rear wheels = M2

$X_{cm} = \frac{M_1x_1 + M_2x_2}{M_1 + M_2}$

$18.7 = \frac{M_1(0) + M_2(21.7)}{177000} \\\\3,309,900 = 21.7M_2\\\\M_2 = \frac{3,309,900}{21.7} \\\\M_2 = 152,529.95 \ kg$

<h3>Force exerted by the ground on each rear wheel</h3>

There are two rear wheels, and the force exerted on each wheel due to mass of the airplane at this position is calculated as follows;

$W = mg\\\\W_1 = W_2 = \frac{1}{2} (mg) = \frac{1}{2} (152,529.95 \times 9.8) = 743,396.76 \ N= 0.743 \ MN$

<h3>Mass of the plane at the position of the front wheel</h3>

M1 + M2 = 177,000

M1 = 177,000 - M2

M1 = 177,000 - 152,529.95

M1 = 24,470.05 kg

<h3>Force exerted by the ground on the front wheel</h3>

W = mg

W = 24,470.05 x 9.8

W = 239,806.5 N = 0.239 MN

Learn more about center mass here: brainly.com/question/13499822

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2 years ago