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2 months ago

Guest #2390768

2 months ago

**Explanation:**

It is known that the value of free fall acceleration is g = 6.44 . And, the value of radius of Earth is .

Let us assume that height of the satellite is h.

It is known that,

g =

where, r = (R + h)

Hence,

r =

r =

=

Now, formula for height of satellite above the Earth's surface is as follows.

h = r - R

=

=

Thus, we can conclude that **the satellite is **** high above Earth's surface.**

Guest #2390769

2 months ago

The **height **of the satellite moving in a circular orbit above the Earth's surface is the satellite is; 1.5 × 10⁶ m

The formula to find the height of the** satellite** above the earth's surface is; h = [√(GM/g)] - R

where;

G is **gravitational constant** = 6.67 × 10⁻¹¹ N.m²/kg²

M is mass of earth = 5.98 × 10²⁴ kg

g is **free fall acceleration** = 6.44 m/s²

R is **radius** of earth 6400000 m

Thus;

h = [√(6.67 × 10⁻¹¹ × 5.98 × 10²⁴/6.44)] - 6400000

h = 1.5 × 10⁶ m

Read more about** height of gravitational fall **at; brainly.com/question/14460830

Question

The substances that begin a chemical reaction are called

Solution 1

**Answer: Reactants**

**Explanation: Reactants are the initial substances that reacts to form products in a chemical reaction. **

Question

A 0.15 mol sample of H2S is placed in a 10 L reaction vessel and heated to 1132◦C. At equilibrium, 0.03 mol H2is present. Calculate the value of Kc for the reaction2 H2S(g)⇀↽2 H2(g) + S2(g)at 1132◦C

Solution 1

**Answer: The value of the equilibrium constant is 0.00009.**

**Explanation:**

Initial moles of = 0.15 mole

Volume of container = 10 L

Initial concentration of

Moles of at equilibrium= 0.03 mole

equilibrium concentration of [/tex]

The given balanced equilibrium reaction is,

Initial conc. 0.015 M 0 0

At eqm. conc. (0.015-2x) M (2x) M (x) M

The expression for equilibrium constant for this reaction will be,

we are given : 2x= 0.003 M

x= 0.0015 M

Now put all the given values in this expression, we get :

**Thus the value of the equilibrium constant is 0.00009.**

Question

How many nitrogen atoms are in 4.24 x 1022 molecules of Ca (NO3)2 ?

Solution 1

**Answer:**

**8.48 × 10**²² **atoms of Nitrogen**

**Explanation:**

Calcium Carbonate is an ionic compound made up to Calcium (Ca²⁺) and Nitrate (NO₃⁻) ions. Also, the subscript 2 after the closed bracket after NO₃ specifies that there are two moles of NO₃⁻ in calcium nitrate compound. Hence, in total we can say that this compound contain,

1 atom of Calcium

2 atoms of Nitrogen

6 atoms of Oxygen

Therefore,

When,

1 molecule of Ca(NO₃)₂ contains = 2 atoms of Nitrogen

Then,

4.24 × 10²² molecules of Ca(NO₃)₂ will contain = ** X** atoms of Nitrogen

Solving for **X**,

**X** = 2 atoms × 4.24 × 10²² molecule / 1 molecule

** X ** = **8.48 × 10**²² **atoms of Nitrogen**

Question

What is the definition of a solvent

Solution 1

*having assets in excess of liabilities; able to pay one's debts

Or

*able to dissolve other substances.

Example sentence:

interest rate rises have very severe effects on normally solvent companies

Or

*able to dissolve other substances.

Example sentence:

interest rate rises have very severe effects on normally solvent companies

Question

What is the definition of a Solute

Solution 1

Look it up on Google, kid

Question

Which of these is true of the Endangered Species Act? A. It states that plants are not eligible for protection.
B. It protects only those species classified as endangered.
C. It is intended to improve he quality of air and the water in the US.
D. It requires the government to prevent activity that could hurt threatened or endangered species.

Solution 1

B. It protects the species classified as endangered

Question

Statistical power is influenced by all of the following except A significance error
B. critical value level
C. observed test value
D. sample size
Please select the best answer from the choices provided
ОА

Solution 1

The **statistical power** is influenced by the factors such as sample size, **significance error**, observed test value etc. Hence, the **critical value **level is the one not influencing the statistical power.

**Statiscal power** is an important factor necessary to draw out the conclusion about a data. There will be always risk of making errors. Statistical power is the probability of avoiding these kind of errors from the various stages of data collection and interpretation.

If there is no enough power for a** statiscal data**, there will be lee worth for time and money expenditure on the resources. The sample size is the minimum number of observations that are required to study the effect of a certain size with the given power level.

The **significant error **level and observed test value are all affecting the statiscal power in an experiment. However, **critical value level **is having no significant role on it. Hence option **B** is correct here.

Find more on **statistical power**:

#SPJ6

Solution 2

**Answer: The answer is option **C

**Explanation:**

**just got it right on edge**

Question

How do i solve this problem
8.78 x 0.0500/0.478

Solution 1

**Answer:**

0.918410042

**Explanation:**

Question

How many moles are in 12 gr of magnesium?

Solution 1

Answer: 0.5 mole Mg

Explanation: solution:

12 g Mg x 1 mole Mg / 24 g Mg

= 0.5 mole Mg

Question

Write the chemical equation for the formation of PH2Br

Solution 1

**Answer:**

2P + 2H(2) + Br(2) = 2PH(2) Br...mod 5

**Explanation:**

Both hydrogen and bromine are both homonuclear diatomics

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