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oksian1 [2.3K]
3 years ago
9

A net force of 100 n is moving a mass with an acceleration of 5 m/s2. what is the mass of the object? 0.05 kg 20 kg 95 kg 500 kg

Physics
2 answers:
Ivan3 years ago
7 0

20 kg is the answer for this question

dezoksy [38]3 years ago
6 0
F = ma
100n = m(5m/s^2)
100/5 = 20

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What is the unit of pressure? Why is it called a derived unit?<br>Why has SI system​
Dovator [93]

Answer:

pascal

Explanation:

its obtained after either division or multiplication

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An example of the energy transformation of mechanical energy to electrical energy is
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generator

Explanation:

motor running to electrical

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If you heat a fixed quantity of gas, which of the following statements are true?Check all that apply.a.The volume will always in
kherson [118]

Answer:

Explanation:

Given

there is fix Quantity of gas i.e. mass of gas is constant

From ideal gas Equation

PV=nRT

(a) volume always increases is not true as Pressure can also be increased .

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8 0
3 years ago
An insect 5.00 mm tall is placed 20.0 cm to the left of a thin planoconvex lens. The left surface of this lens is flat, the righ
jenyasd209 [6]

Answer:

a) i = -9.63 cm ,    h ’= .0.24075 cm   erect

b)  i = 259.74 cm ,

Explanation:

For this exercise let's start by finding the focal length of the lens

               1 / f = (n-1) (1 / R₁ - 1 / R₂)

                1 / f = (1.70 -1)) 1 / ∞ - 1/13)

                1 / f = 0.0538

                 f = - 18.57 cm

Now we can use the constructor equation

             1 / f = 1 / o + 1 / i

             1 / i = 1 / f - 1 / o

              1 / i = -1 / 18.57 -1/20

               1 / i = -0.1038 cm

               I = -9.63 cm

For the height of the

image let's use magnification

                 m = h '/ h = - i / o

                  h ’= -h i / o

                  h ’= - 0.5 (-9.63) / 20

                  h ’= .0.24075 cm

b) we invert the lens

The focal length is

             1 / f = (1.70 -1) (1/13 - 1 / int)

              1 / f = 0.0538

             f = 18.57 cm

             1 / i = 1 / f -1 / o

             1 / I = 1 / 18.57 - 1/20

             1 / I = 3.85 10-3

             i = 259.74 cm

     

            h ’= - 0.5 259.74 / 20

             h ’= 6.4935 cm

7 0
3 years ago
Which of these ionic compounds have polyatomic ions? Check all that apply.
Taya2010 [7]

Answer:

  • CaCO₃ and
  • NaOH.

Explanation:

Polyatomic ions are ions that contain more than one atom in each one of the ions.  

Ionic compounds are made of cations (positive ions) and anions (negative ion). By convention, the cation is written before the anion.

List the ions in each compound:

<h3>CaCO₃</h3>

Cation: \rm Ca^{2+},

Anion: \rm {CO_3}^{2-}.

\rm Ca^{2+} is a monatomic ion for it contains only one atom in each ion.

\rm {CO_3}^{2-} is a polyatomic ion for it contains four atoms (one C atom and three O atoms) in each ion.

<h3>NaF</h3>

Cation: \rm Na^{+},

Anion: \rm F^{-}.

Both \rm Na^{+} and \rm F^{-} are monatomic for they contain only one atom in each ion.

<h3>FeO</h3>

Cation: \rm Fe^{2+},

Anion: \rm {O}^{2-}.

Both \rm Fe^{2+} and \rm O^{2-} are monatomic for they contain only one atom in each ion.

<h3>CaCl₂</h3>

Cation: \rm Ca^{2+},

Anion: \rm {Cl}^{-}.

Both \rm Ca^{2+} and \rm Cl^{-} are monatomic for they contain only one atom in each ion.

<h3>NaOH</h3>

Cation: \rm Na^{+},

Anion: \rm {OH}^{-}.

\rm Na^{+} is a monatomic ion for it contains only one atom in each ion.

\rm {OH}^{-} is a polyatomic ion for it contains two atoms (one O atom and one H atom) in each ion.

5 0
3 years ago
Read 2 more answers
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