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3 years ago

Which stage occurs just before ignition in an internal combustion engine?

2 answers:

6 0

usually, the fuel pump turns on, along with all of the vehicle's electric systems, but on a large diesel engine, like in a semi, or agricultural equipment, the intake, and carburetor are activated first to allow diesel (fuel) into the engine to combustion can be produced once the engine turns over

ddd [48]3 years ago

5 0

I think it is this because compression stroke it needs to be compressed then open up when started.

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Chemical bonds form when atoms A.) gain protons. B.) combine nuclei C.) give up neutrons. D.) share or transfer electrons

frutty [35]

The correct answer is (D)

8 0

3 years ago

If the period of a given wave is 6 seconds what si the frequency of the wave

Veronika [31]

Frequency =1/period
Freq= 1/6= 0.17 Hertz

3 0

3 years ago

A closed system consisting of 10 lb of air undergoes a polytropic process from p1 = 75 lbf/in2, v1 = 4 ft3/lb to a final state w

Vitek1552 [10]

Answer:

The polytropic exponent (n) is 1.2

The amount of energy transfer by work is 552.45 Btu

Explanation:

P1V1^n = P2V2^n

P1 = 75 lbf/in^2 = 75 lbf/in^2 × 143.3 in^2/ft^2 = 10,747.5 lbf/ft^2

V1 = 4 ft^3/lb × 10 lb = 40 ft^3

P2 = 20 lbf/in^2 = 20 × 143.3 = 2866 lbf/ft^2

V2 = 12 ft^3/lb × 10 lb = 120 ft^3

(V2/V1)^n = P1/P2

(120/40)^n = 10747.5/2866

3^n = 3.75

ln 3^n = ln 3.75

n ln 3 = ln 3.75

n = ln 3.75/ln 3 = 1.2

W = (P2V2 - P1V1)/1 - n = (2866×120 - 10747.5×40)/1-1.2 = (343,920 - 429,900)/-0.2 = -85,980/-0.2 = 429,900 lbf.ft = 429,900/778.17 Btu = 552.45 Btu

4 0

3 years ago

In your own words, describe the purpose of using a chemical equation.

stich3 [128]

the purpose of using a chemical equation is to know the reactants and products that occur.

reactants=starting material

products=end result

3 0

3 years ago

Read 2 more answers

If a golf ball and a ping-pong ball both move with the same kinetic energy, which has the greater speed?.

Digiron [165]

Given what we know, if a golf ball and a ping-pong ball both move with the same kinetic energy, the ping-pong ball must be traveling at a greater speed.

<h3>How do we know that the ping-pong ball is faster?</h3>

This has to do with the formula for kinetic energy.
The formula is $KE= 1/2 *m * v^2$ .
This means that mass and velocity are proportional.
If the total Kinetic energies are equal, the object with the lower mass must have a higher velocity.
Since ping-pong balls are known to have very little mass, we know it must be traveling faster.

Therefore, we can confirm that if a golf ball and a ping-pong ball both move with the same kinetic energy, the ping-pong ball must be traveling at a greater speed due to its lower mass and the relationship between mass and speed when calculating kinetic energy.

To learn more about kinetic energy visit:

brainly.com/question/999862?referrer=searchResults

3 0

2 years ago