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3 years ago

Match the following.

Physics

1 answer:

anastassius [24]3 years ago

8 0

Answer:

You should really put the definitions man

Explanation:

The question is Match the following.

1. intake stroke

a.the gas vapor/air mixture enters the cylinder

2. compression stroke

b. the gas vapor/air mixture is pressurized

3. power stroke

c. hot gases are expelled from the cylinder

4. exhaust stroke

d. a spark from a spark plug initiates a chemical reaction

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A calcium bromide compound is represented by which formula?

ipn [44]

Answer:

Calcium bromide is the name for compounds with the chemical formula CaBr2(H2O)x.

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3 years ago

Read 2 more answers

An experiment to measure the speed of light uses an apparatus similar to Fizeau's. The distance between the light source and the

Marina86 [1]

Answer:

$2.88*10^{8} m/s$

Explanation:

The speed of light is given by

$c=\frac {2d}{t}$ and $t=\frac {\theta}{\omega}$ hence

$c=\omega\frac {2d}{\theta}$

Speed of light is given by

$c=900\times 2\pi(\frac {2\times 10}{\frac {2\pi}{2*800}}})=2.88*10^{8} m/s$

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3 years ago

A. Besides protons, what other particles make up an atom? Write 2 - 3 sentences describing how the electrostatic force acts betw

vodomira [7]

Answer:

For a. Neutrons and electrons also form an atom.

For b. The element is oxygen which is a non-metal and will form a negative ion while forming ionic bond.

Explanation:

For a:

There are 3 subatomic particles which form an atom. These are neutrons, protons and electrons.

Neutrons carry no charge, protons carry positive charge and electrons carry negative charge. Neutrons and protons are present in nucleus and electrons revolve around the nucleus.

The energy which is present between neutrons and protons are nuclear energy and the energy which is present between electrons and protons are electrostatic energy.

For b:

In an element, number of protons is always equal to the number of electrons. The atomic number is equal to the number of protons or electrons. The element which has atomic number 8 is Oxygen.

The electronic configuration of this element is $1s^22s^22p^4$

This element requires only 2 electrons to form a stable electronic configuration. An element which gains electron is considered as a non-metal and forms a negative ion because number of electrons increases.

3 0

2 years ago

A pendulum that has a period of 2.67000 s and that is located where the acceleration due to gravity is 9.77 m/s2 is moved to a l

zalisa [80]

Answer:

Explanation:

Expression for time period of pendulum is given as follows

$T=2\pi\sqrt{\frac{l}{g} }$

where l is length of pendulum and g is acceleration due to gravity .

Putting the given values for first place

$2.67=2\pi\sqrt{\frac{l}{9.77} }$

Putting the values for second place

$T=2\pi\sqrt{\frac{l}{9.81} }$

Dividing these two equation

$\frac{T}{2.67} =\sqrt{\frac{9.77}{9.81} }$

T = 2.66455 s.

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2 years ago

A cheetah is known to be the fastest mammal on Earth, at least for short runs. Cheetahs have been observed running a distance of

Arlecino [84]

The cheetah needs 197.8 seconds to complete the 5.50 *100 m distance.

The distance traveled divided by the time taken is the most popular formula for calculating average speed. The average speed is determined by dividing the whole distance by the total time required to complete the distance. The other calculation, provided you have the initial and final speeds, adds them together and divides by 2.20. calculating the time needed for a cheetah to travel 5.50 102 meters.

10 km/h average speed is equal to 10 / 3.6, or 2.78 m/s.

Dist. = 5.50 102

Time =?

average speed = time / distance

time=5.50 x 100/ 2.78

Time = 197.8 s

Therefore, it takes a cheetah 197.8 seconds to travel 5.50 102 meters.

Learn more about average speed here-

brainly.com/question/12322912

#SPJ9

4 0

7 months ago