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Licemer1 [7]
3 years ago
12

20a) Which of the following

Physics
1 answer:
SVETLANKA909090 [29]3 years ago
4 0
I don’t know I’m sorrry
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A moving object has a kinetic energy of 150 j and a momentum with a magnitude of 30.0 kg•m/s. determine the mass and speed of th
SOVA2 [1]
To determine the answer to this item, we use two (2) equations.

Equation for kinetic energy:
   KE = 0.5 mv²

Equation for momentum:
  P = mv

From the second equation, we can deduced that,
  m = P/v
Substituting the known values from the given above,

  m = 30/v

Using this expression in the first equation,

  KE = 0.5 mv²;   150 = 0.5(30/v)(v²)

The value of v from the equation is 10 m/s. 

The mass is therefore calculated as such,
  m = 30/v = 30/10 = 3 kg

Hence, the answers are,

<em> Mass  = 3 kg</em>
<em> Velocity = 10 m/s</em>
4 0
3 years ago
The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by which balanced chemical equation?
Strike441 [17]

Answer:

Option B. N2(g) + 3H2(g) → 2NH3(g)

Explanation:

When nitrogen react with hydrogen, they form a product as shown below:

N2+ H2 → NH3

We need to balance the equation. This is illustrated below:

There are 2 atoms of nitrogen on the left side and 1 atom on the right side. To balance it, put 2 in front of NH3 as shown below:

N2+ H2 → 2NH3

Now, There are a total of 6 atoms of Hydrogen on the right side and 2 atoms on the left side side. This can be balanced by putting 3 in front of H2 as shown below:

N2+ 3H2 → 2NH3

Now we see clearly that the equation is balanced as we have equal numbers of atoms of N and H on both sides of the equation

4 0
3 years ago
Read 2 more answers
heat and pressure deep beneath Earth's surface can change any rock into A. chemical rock B. organic rock C. metamorphic rock D.
Y_Kistochka [10]
It should be a metamorphic rock as those rocks are formed due fue to heat and pressure
4 0
3 years ago
Read 2 more answers
Please help!!!!<br> Will give brainlest
Evgen [1.6K]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
Mass spectrometer A mass spectrometer is a tool used to determine accurately the mass of individual ionized atoms or molecules,
Oksana_A [137]

Answer:

For carbon 12

ΔV1 = 2265.31 V

ΔV2 = 362.5 V

For carbon 14

ΔV1 = 1941.7 V

ΔV2 = 310.67 V

Explanation:

The complete explanations are given in the attachment below. The formulae for the accelerating potential ΔV1 and ΔV2 are derived and the necessary parameters are substituted into the derived equations.

3 0
3 years ago
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