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
Contact [7]
2 years ago
5

Which force keeps the planets from floating off into space?

Chemistry
2 answers:
Naya [18.7K]2 years ago
6 0

Answer: 2021

B

The Sun's gravity

Explanation: Just took the big test

lesantik [10]2 years ago
4 0

Answer:

Suns gravity

Explanation:

You might be interested in
An ideal gas (C}R), flowing at 4 kmol/h, expands isothermally at 475 Kfrom 100 to 50 kPa through a rigid device. If the power pr
Zina [86]

<u>Answer:</u> The rate of heat flow is 3.038 kW and the rate of lost work is 1.038 kW.

<u>Explanation:</u>

We are given:

C_p=\frac{7}{2}R\\\\T=475K\\P_1=100kPa\\P_2=50kPa

Rate of flow of ideal gas , n = 4 kmol/hr = \frac{4\times 1000mol}{3600s}=1.11mol/s    (Conversion factors used:  1 kmol = 1000 mol; 1 hr = 3600 s)

Power produced = 2000 W = 2 kW     (Conversion factor:  1 kW = 1000 W)

We know that:

\Delta U=0   (For isothermal process)

So, by applying first law of thermodynamics:

\Delta U=\Delta q-\Delta W

\Delta q=\Delta W      .......(1)

Now, calculating the work done for isothermal process, we use the equation:

\Delta W=nRT\ln (\frac{P_1}{P_2})

where,

\Delta W = change in work done

n = number of moles = 1.11 mol/s

R = Gas constant = 8.314 J/mol.K

T = temperature = 475 K

P_1 = initial pressure = 100 kPa

P_2 = final pressure = 50 kPa

Putting values in above equation, we get:

\Delta W=1.11mol/s\times 8.314J\times 475K\times \ln (\frac{100}{50})\\\\\Delta W=3038.45J/s=3.038kJ/s=3.038kW

Calculating the heat flow, we use equation 1, we get:

[ex]\Delta q=3.038kW[/tex]

Now, calculating the rate of lost work, we use the equation:

\text{Rate of lost work}=\Delta W-\text{Power produced}\\\\\text{Rate of lost work}=(3.038-2)kW\\\text{Rate of lost work}=1.038kW

Hence, the rate of heat flow is 3.038 kW and the rate of lost work is 1.038 kW.

4 0
2 years ago
The basic building blocks of proteins are:<br> O amino acids<br> O aldehydes<br> O amides<br> ODNA
Sonja [21]
Amino acids are the basic parts of proteins
8 0
3 years ago
Read 2 more answers
Copper can be broken into simpler substances so what is it
allochka39001 [22]
Cooper cannot be broken down into a simpler substance since it is an element meaning it had its own atoms.
6 0
3 years ago
This picture shows a desert environment, which is home to many lizards, small mammals, and cacti
kotykmax [81]

Answer:

A

Explanation:

If the Picture is a Desert showing reptiles like lizards and has cacti then it would be Dry and Sandy

5 0
2 years ago
Read 2 more answers
A sample of gas with an initial volume of 12.5 L at a pressure of 784 torr and a temperature of 295 K is compressed to a volume
Kipish [7]

Answer:

Final pressure in (atm) (P1) = 6.642 atm

Explanation:

Given:

Initial volume of gas (V) = 12.5 L

Pressure (P) = 784 torr

Temperature (T) = 295 K

Final volume (V1) = 2.04 L

Final temperature (T1) = 310 K

Find:

Final pressure in (atm) (P1) = ?

Computation:

According to combine gas law method:

\frac{PV}{T} =\frac{P1V1}{T1} \\\\\frac{(784)(12.5)}{295} =\frac{(P1)(2.04)}{310}\\\\33.22 = \frac{(P1)(2.04)}{310}\\\\P1=5,048.18877

⇒ Final pressure (P1) = 5,048.18877 torr

⇒ Final pressure in (atm) (P1) = 5,048.18877 torr / 760

⇒ Final pressure in (atm) (P1) = 6.642 atm

3 0
3 years ago
Other questions:
  • Which one is the answer?
    12·1 answer
  • The volume of a fixed amount of gas is double and the absolute temperature os doubled according to the ideas gas law how has the
    9·1 answer
  • We can change a gas to liquid by the temperature and the pressure. NextReset
    14·2 answers
  • Bob is cleaning his dishwasher with white vinegar by putting a bowl of this ____________ mixture in the top of an empty dishwash
    15·1 answer
  • Titration Lab Sheet: Day 2 (Alternate)‼️‼️‼️
    8·2 answers
  • 17 points Pls helpppppopppp
    12·1 answer
  • 54:63 ratio simplest form?
    11·1 answer
  • Sammy and Marisa are asked to determine what kind of bonds are present in the
    5·1 answer
  • Determine the theoretical yield of PbCh2
    10·1 answer
  • Which characteristic of money explains why an old dollar is worth as much as a crisp, new dollar?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!