1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ipatiy [6.2K]
3 years ago
8

A nasa spacecraft measures the rate r of at which atmospheric pressure on mars decreases with altitude. the result at a certain

altitude is: =r0.0421·kpakm−1 convert r to ·jcm−4 .
Physics
2 answers:
Pie3 years ago
4 0
<span>this is simple question of conversion of unit But as we can see here that one is in kpa or kilo pascal which is a unit of pressure while another is in joule which is unit of energy but if we do the dimension matching we could see that 1pa = 1J/m^3 and 0.0421kpa/km=0.0421pa/m now putting above equation as substitution 0.0421pa/m=0.0421J/m^4 100 cm = 1 m putting it we get R= 4.21Ă—10^-10 J/cm^4</span>
Lesechka [4]3 years ago
3 0

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

1 kPa= 10^3 Pa

1 km=10^5 cm

1kPa/km=0.01 Pa/cm

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

\Rightarrow r= 0.0421 kPa/km= 0.0421 kPa/km \times \frac{10^{-8} J/cm^4}{1 kPa/km}= 0.0421 \times 10^{-8}J/cm^4=4.21 \times 10^{-10} J/cm^4

You might be interested in
How does the structural of unicellular and multicellular oraganism differ
GenaCL600 [577]

The structural of the unicellular organism and the multicellular organism differs in a broad variety of ways. The main differences you need to know between these two cells are the following.

- Unicellular organism is composed with only one cell.

- Multicellular organism is made up of two or more cells.

- Unicellular are mostly prokaryotes, while multicellular is mainly considered as eukaryotes.

- Unicellular organisms are more smaller and less complex than multicellular organisms.

Hope this helped!

6 0
2 years ago
Eifhewfiowehfoiwehfoiwe
inysia [295]

Answer:

LEKWKKAKDJFKWNFKWFF

Explanation:

INLOVE THE WORDS U USE THERE

4 0
2 years ago
(ii) Describe how the acceleration of the train at time t = 100 s differs from the acceleration
quester [9]

Explanation:

Acceleration is the rate of change of velocity with time. When acceleration increases a body moves a faster velocity.

  • In the graph acceleration at time t= 100s is rapidly increasing.
  • At t = 20s, the acceleration of the body is getting started up.

A vehicle at time 100s will have a faster velocity compared to one at t = 20s

7 0
3 years ago
WILL GIVE BRAINLIEST TO THE CORRECT ANSWER
LenKa [72]

Answer:

See the answers below.

Explanation:

We can solve both problems using Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F =m*a

where:

F = force [N] (units of newtons)

m = mass = 1000 [kg]

a = acceleration = 3 [m/s²]

F = 1000*3\\F=3000[N]

And the weight of any body can be calculated by means of the mass product by gravitational acceleration.

W=m*g\\W=1000*9.81\\W=9810 [N]

4 0
2 years ago
Considerando que você comece a caminhar em velocidade constante, inicialmente a 350 m de um ponto referencial escolhido. Você ca
ExtremeBDS [4]

Answer:

a. S(t)=350−1t

Explanation:

To determine the equation of motion you take into account the general form of motion with constant velocity:

S(t)=S_o+vt    ( 1 )

So is the initial position from a specific reference frame. In this case is 350 m.

v is the speed of the motion, in this case is 1m/s. However, the motion is forward the zero point of the reference frame, hence, the speed is - 1m/s.

You replace the values of So and v in the equation ( 1 ) and you obtain:

S(t)=350-(1m/s)t

Hence, the answer is:

a. S(t)=350−1t

- - - - - - - - - - - - - - - - - - - - -

Para determinar a equação do movimento, você leva em consideração a forma geral do movimento com velocidade constante:

             (1)

Assim é a posição inicial de um quadro de referência específico. Neste caso, é de 350 m.

v é a velocidade do movimento, neste caso é de 1m / s. No entanto, o movimento é avançar o ponto zero do quadro de referência, portanto, a velocidade é de - 1m / s.

Você substitui os valores de So ev na equação (1) e obtém:

Portanto, a resposta é:

uma. S (t) = 350-1t, movimento retrógrado

4 0
3 years ago
Other questions:
  • Please select the word from the list that best fits the definition. The movement of a magnetic pole away from the actual pole
    13·1 answer
  • a 59kg physics student jumps off the back of her laser sailboat (42kg). after she jumps the laser is found to be travelling at 1
    12·1 answer
  • If Teresa's daughter is my daughters mother who am I to Teresa?
    9·2 answers
  • A stockroom worker pushes a box with mass 16.8 kg on a horizontal surface with a constant speed of 3.50 m/s. The coefficient of
    9·1 answer
  • Planet B has a tilt of 45 degrees. What seasonal changes would be expected on this planet?
    10·1 answer
  • Which of the three types of equations follows the law of conservation of mass?
    15·1 answer
  • g What is the separation between their paths in meters when they hit a target after traversing a semicircle
    14·1 answer
  • The voltage between two points in a circuit is 4.2 V. If the resistance between
    11·2 answers
  • A motorcycle is moving at a constant speed of 40 km/h. How long does it take the motorcycle to travel a distance of 10 km
    14·1 answer
  • Where on the periodic table does it tell you the number of valence electrons an electron has
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!