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posledela
3 years ago
12

A NASA spacecraft measures the rate of at which atmospheric pressure on Mars decreases with altitude. The result at a certain al

titude is: Convert to .
Physics
1 answer:
Vlada [557]3 years ago
5 0

Answer:

= 4.21\times 10^{-10}J/cm^4

Explanation:

According to the given situation, the computation is shown below:-

1kPa=10^3Pa

So,

1Km = 10^5cm

1kPa=0.01Pa/Cm

1kPa=10^{-8}J/cm^4

Now as per the question it is given that

r = 0.0421KPa/Km

= 0.0421KPa/Km \times \frac{10^{-8}J/cm^4}{1KPa/Km}

after solving the above equation we will get

= 0.0421\times 10^{-8}J/cm^4

or we can write the above equation in this manner, that is

= 4.21\times 10^{-10}J/cm^4

Therefore we have solved the equation to reach the right answer.

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3. solve the following with regard to significant figures<br> a) 5.8 + 0.125<br> II) 3.9x105-2.5x104
KonstantinChe [14]

Answer:

a)5.925

ii)149.5 or383.5

Explanation:

ii)3.9×105-2.5×104

409.5-260

the zero in 260 may or may not be significant since it is after two significant figures thus we have two options

3 0
3 years ago
Which of these forces are acting within a nucleus? Check all that apply.
zavuch27 [327]

Answer:

Excuse me what?

Explanation:

5 0
3 years ago
If light moves from left to right along the x-axis, then the electric field line vibrates along what?? :(
sasho [114]
All you can say about it is that it then vibrates perpendicular to the x-axis. But that could be up and down parallel to the y-axis, in and out parallel to the z-axis, or some of it in every possible direction perpendicular to the x-axis. We "polarize" the light when we want to pick out only one perpendicular direction and stop all the others.
6 0
3 years ago
A small electronic device is rated at 0.16 W when connected to 115 V. What is the resistance of this device?
Ierofanga [76]

Answer:

150156.25 Ω

Explanation:

Resistance: This can be defined as the opposition to the flow of electric current in a circuit. The S.I unit of resistance is Ohm's (Ω)

The expression for resistance is given as

P = V²/R................ equation 1

Where P = power, V = Voltage, R = Resistance.

Making R the subject of the equation,

R = V²/P.................. Equation 2

Given: V = 115 V , P = 0.16 W.

Substitute into equation 2

R = 155²/0.16

R = 150156.25 Ω

Hence,

The resistance = 150156.25 Ω

8 0
3 years ago
Read 2 more answers
The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as meas
alexgriva [62]

Answer:

B.  inverse plot, 0.51 kilograms/meter3

Explanation:

First of all, we note that the relationship between the altitude and the atmospheric density is an inverse relationship. In fact, an inverse relationship is a relationship between the x-variable and the y-variable of the form

y \propto \frac{1}{x}

Therefore, as the x increases, the y decreases, and as the x decreases, they increases. This is exactly what occurs with the altitude and the atmospheric density in this plot: as the altitude increases, the density decreases, and vice-versa.

Moreover, we can infer the value of the atmospheric density at an altitude of 1,291 km. This point is located between point A (2550 km) and point B(1000 km), so the density must have a value between 0.30 kg/m^3 and 0.54 kg/m^3, so the correct choice is

B.  inverse plot, 0.51 kilograms/meter3


5 0
3 years ago
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