Masses in motion question 1 options: kinetics geophysics thermodynamics neurophysics

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Answer 1

Answer: kinetics is the answer

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For this assignment, you will construct a personal dietary plan that is reflective of your current diet in terms of its nutritional value.

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you don’t do it and cheat

What is the basic difference between a nuclear fission reaction and a nuclear fusion reaction?A) Fusion is a synthesis reaction while fission is a decomposition reaction.
B) Fusion is an exothermic reaction while fission is an endothermic reaction.
C) Fusion does not generate energy while fission generates a huge amount of energy.
D) Fusion only takes place in the stars so it cannot be used on Earth to generate energy while fission can be used here for energy.

Answers

Fusion is a synthesis reaction while fission is a decomposition reaction A

the answer is a. nuclear fission is breaking up

A 1000-kg barge is being towed by means of two horizontal cables. One cable is pulling with a force of 80.0 N in a direction 30.0° west of north. In what direction should the second cable pull so that the barge will accelerate northward, if the force exerted by the cable is 120 N?

Answers

Answer:

θ = 19.47°

Explanation:

given,

mass of the barge = 1000 kg

force applied to pull = 80 N

direction = 30° west to north

force exerted by the cable = 120 N

direction = ?

first cable is pulling

in north direction = 80 cos ∅

= 80 cos 30°

= 69.28 N

in west direction = 80 sin ∅

= 80 sin 30°

= 40 N

the other cable will pull in the opposite direction of west

now,

$120 sin \theta = 40$

$sin \theta = (40)/(120)$

$\theta = sin^(-1){(1)/(3)}$

θ = 19.47°

the direction of the cable will be equal to θ = 19.47°

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.7 1010 m (inside the orbit of Mercury), at which point its speed is 9.5 104 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6 1012 m from the Sun? (This is the approximate distance of Pluto from the Sun.)

Answers

Answer:

58515.9 m/s

Explanation:

We are given that

$d_1=4.7* 10^(10) m$

$v_i=9.5* 10^4 m/s$

$d_2=6* 10^(12) m$

We have to find the speed (vf).

Work done by surrounding particles=W=0 Therefore, initial energy is equal to final energy.

$K_i+U_i=K_f+U_f$

$(1)/(2)mv^2_i-(GmM)/(d_1)=(1)/(2)mv^2_f-(GmM)/(d_2)$

$(1)/(2)v^2_i-(GM)/(d_1)+(GM)/(d_2)=(1)/(2)v^2_f$

$v^2_f=2((1)/(2)v^2_i-(GM)/(d_1)+(GM)/(d_2))$

$v_f=\sqrt{2((1)/(2)v^2_i-(GM)/(d_1)+(GM)/(d_2))}$

Using the formula

$v_f=\sqrt{v^2_i+2GM((1)/(d_2)-(1)/(d_1))}$

$v_f=\sqrt{(9.5* 10^4)^2+2* 6.7* 10^(-11)* 1.98* 10^(30)((1)/(6* 10^(12))-(1)/(4.7* 10^(10)))$

Where mass of sun= $M=1.98* 10^(30) kg$

$G=6.7* 10^(-11)$

$v_f=58515.9 m/s$

Which is an IUPAC name for a covalent compound

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In naming covalent compound (binary) based in IUPAC naming, we have 4 rules to be followed:

1. The first element of the formula will use the normal name of the given element. for example: CO2 ( Carbon Dioxide), Carbon is the element name of the first element of the formula.

2. The second element is named as if they are treated like an anion but put in mind that these are no ions in a covalent compound but we put -ide on the second element as if it is an anion.

3. Prefixes are used to indicate the number of atom of the elements in the compound. for example: mono- 1 atom, di- 2atoms, tri- 3 atoms and etc

4. Prefix "mono"is never used in naming the first element. For example: Carbon dioxide, there should be no monocarbon dioxide.

An IUPAC name for a covalent compound is ethane. For covalent compounds, IUPAC names are based on the composition and structure of the molecules. Covalent compounds typically consist of nonmetals or a combination of nonmetals and metalloids.

Ethane (C₂H₆) is a covalent compound that consists of two carbon atoms bonded to each other with single bonds, and each carbon atom is also bonded to three hydrogen atoms.

Other examples of IUPAC names for covalent compounds include:

Methane (CH₄)

Propane (C₃H₈)

Ethene (C₂H₄)

Nitrogen dioxide (NO₂)

These names are derived based on the IUPAC rules for naming covalent compounds, which consider the number and types of atoms present in the molecule.

To know more about covalent compounds:

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A 2.75 kg sample of a substance occupies a volume of 250 cm³ . Find the density in g/cm³ and kg/m³