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3 years ago

12

Which of the following statements accurately describes the properties of gases?

2 answers:

alexira [117]3 years ago

6 0

THE CORRECT ANSWER IS B

Ray Of Light [21]3 years ago

4 0

<span>A change in the pressure of a gas results in a more significant change in volume than it would in a liquid. is the statement that accurately describes the property of gas. Gas only depends on how you store it. the bigger the space the wider gas can expand, the smaller the space, the more compress the gas can become.</span>

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During an automobile crash test, the average force exerted by a solid wall on a 1,700 kg car that hits the wall is measured to b

Molodets [167]

Answer:

14 m/s

Explanation:

Step One:

Given data:

mass of automobile m= 1700kg

Force F= 170,000 N

time t= 0.14s

v= ??

Required

The velocity of the car

Step two:

From the expression given below, we can find the velocity

Ft= mv

make v subject of the formula

v= Ft/m

v= 170000*0.14/1700

v=23800/1700

v=14 m/s

3 0

3 years ago

The energy that's given to the body by food is A. measured in units called calories. B. best obtained by eating high protein. C.

mel-nik [20]

Answer:

Calories, however you might want to back up my answer. I havent studied this topic in a while.

4 0

3 years ago

g Three masses are located in the x- y plane as follows: a mass of 6 kg is located at (0 m, 0 m), a mass of 4 kg is located at (

Lynna [10]

Answer:

Xcm = (6 * 0 + 4 & 3 + 2 * 0) / 12 = 1

Ycm = (6 * 0 + 4 * 0 + 2 * 3) / 12 = 1/2

(Xcm , Ycm) = (1 , 1/2)

Using definition of center of mass

4 0

2 years ago

One of the many by products of uranium is radioactive plutonium, which has a half life of approximatley 25000 ytears. if some of

strojnjashka [21]

Answer:

0.9972 fraction of plutonium will remain after 100 years.

Explanation:

Half life of plutonium = $t_{1/2}=25000 years$

Let the initial mass of plutonium be = $A_o$

Mass of plutonium after time of 100 years = A

Decay constant for this process = $\lambda =\frac{0.693}{t_{1/2}}$

$A=A_o\times e^{-\lambda t}$

$A=A_o\times e^{-\frac{0.693}{25000 years}\times 100 year}$

$A=A_o\times 0.9972$

$\frac{A}{A_o}=0.9972$

0.9972 × 100 = 99.72 %

0.9972 fraction of plutonium will remain after 100 years.

8 0

3 years ago

A fighter jet flies 3 km west and then 2 km east in 8 minutes. Determine the jet's average velocity. (Remember to convert!)

blondinia [14]

Answer:

7.69km/hr due east

Explanation:

Given parameters:

Displacement due west = 3km

Displacement due east = 2km

Time taken = 8 minutes

Unknown:

Average velocity = ?

Solution:

Average velocity is the rate of change of displacement with time.

Velocity = $\frac{displacement}{time }$

Displacement is deals with the start and the end;

Here, displacement = 3km - 2km = 1km due east

Time = 8min

60min = 1hr

8min = $\frac{8}{60}$ = 0.13hr

Average velocity = $\frac{1km}{0.13hr}$ = 7.69km/hr due east

6 0

3 years ago