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Irina18 [472]
1 year ago
15

The following equation, N2 + 3 H2 —>2 NH3 ,describes a

Physics
2 answers:
balandron [24]1 year ago
7 0
Answer:
(2) Chemical Change

explanation:
I'll assume that line with the "$gt;" right after it is meant to be an arrow. This is showing a chemical formula. Chemical formula's are used to represent chemical reactions, or a chemical change, using reactants, and arrow, and products. N2 + 3H2 "react to form" 2NH3.
mafiozo [28]1 year ago
4 0
Physical change 1 is the answer
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For a series circuit:
tatuchka [14]

Answer:

b

Explanation:

because the same current flows through the lamps and the total voltage across all the lamps is the sum of all the separate voltages across them.

6 0
2 years ago
The contraption below has the following
AnnyKZ [126]

Answer:

117.72 N

Explanation:

The given parameters are;

The mass m₁ = 2.0 × 10³ kg

The mass m₂ = 4.4 × 10² kg

The mass of the man, m₃ = 6.0 × 10 kg

The condition of the interaction of the surfaces = Frictionless surfaces

The

The tension in the string = The downward force = The weight of (m₂ + m₃) = (m₂ + m₃) × g

Let <em>a</em> represent the acceleration of the connected masses due to the weight of m₂, and m₃, we have;

(m₁ + m₂ + m₃) × a = (m₂ + m₃) × g

∴ a = (m₂ + m₃) × g/(m₁ + m₂ + m₃)

Which gives;

a = (4.4 × 10²+ 6.0 × 10) × 9.81/(2.0 × 10³+ 4.4 × 10²+ 6.0 × 10) = 1.962

The downward acceleration, a = 1.962 m/s²

The apparent weight of the man = The mass of the man, m₃ × The acceleration, <em>a</em>

∴ The apparent weight of the man = 6.0×10 kg ×1.962 m/s² = 117.72 N

4 0
3 years ago
Acording to Newton’s second law of motion if a rigid body of unchanging mass is observed accelerating what must be happening
blondinia [14]

A force is being applied to the mass.

6 0
3 years ago
Read 2 more answers
The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the
natulia [17]

Answer:

The value is   A =  2.80 *10^{-4} \  m^2

Explanation:

From the question we are told that

The  operating temperature is  T  =  2450 \  K

The emissivity is  e =  0.350

 The  power rating is  P  =  200 \  W

Generally the area is mathematically represented as

      A = \frac{P}{ e *  \sigma  *  T^2}

Where  \sigma is the Stefan Boltzmann constant  with value  

      \sigma  =  5.67 *10^{-8} \  W/m^2\cdot K^4

So

     A =  \frac{200}{0.350 *  5.67*10^{-8} *  2450^{4}}

     A =  2.80 *10^{-4} \  m^2

8 0
3 years ago
Which type of force will an object move towards?
Makovka662 [10]

Answer:

i think it's weakest

EDIT: It's net. I answered weakest but it was wrong and the correct answer was net. oops

Explanation:

if a strong force is acting on something it will push it away, meaning the object would go towards the weaker force

4 0
2 years ago
Read 2 more answers
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