PHYSICS HIGH SCHOOL

Convierte 25 Km/h a m/s

Answers

Answer 1
Answer:

Answer:

6.944m/s

Explanation:

25km/h * (1h)/(60min)*(1min)/(60s) *(1000m)/(1km)

(25km)/(1h) * (1h)/(60min)*(1min)/(60s) *(1000m)/(1km)

(25km*1h*1min*1000m)/(1h*60min*60seg*1km)

(25*1*1*1000)/(1*60*60*1)

(125)/(18) = 6.944m/s
Answer 2
Answer:

Answer:

6.94444

Explanation:

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A uniform Capillary tube closed at one end Contain dry air trapped by a thread of mercury 8.5x10 m long when the tube was held horizontally, the length of the air Column 5.0X10^2 Wher it held verti cally with the closed end downward the length was 4.5x10^2m Determine the value of atmospheric pressure take g=10m/s, density of mercury (1.36×10^4kg/m) ​

Answers

Answer:

To determine the value of atmospheric pressure, we can use the concept of hydrostatic pressure. By comparing the lengths of the air column in the capillary tube when held horizontally and vertically, we can equate the pressure difference to the difference in height of the mercury column. Using the given values and the density of mercury, we can calculate the atmospheric pressure.

Carbon and hydrogen are examples of pure substances or

Answers

Carbon and hydrogen are also examples of elements

The inner solar system contains theA)Jovian planets
B)terrestrial planets and asteroids
C)dwarf planets like Pluto

Answers

jovian planets and  dwarf planets like pluto are in the outer part of our solar system. so, terrestrial planets ,which means earth like planets, live in the inner part of our solar system. or B. is the answer

What is the answer for this in scientific notation (6.77 x 10³) + (5.85 x 10³) = ?

Answers

Answer:

12620

Explanation:

Answer:

(6.77 x 10³) + (5.85 x 10³) = 12620= 1.2620 x 10⁴

Explanation:

can i have brainliest please

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true?The mechanical waves reach Earth, while the electromagnetic waves do not.

The electromagnetic waves reach Earth, while the mechanical waves do not.

Both the mechanical waves and the electromagnetic waves reach Earth.

Neither the mechanical waves nor the electromagnetic waves reach Earth.

Answers

Among the choices, the correct statement is: "The electromagnetic waves reach Earth, while the mechanical waves do not."

The sun's electromagnetic waves reach the Earth in the form of radiation. Mechanical waves cannot travel through vacuum. These two facts alone support the correct statement.

Answer:

The electromagnetic waves reach Earth, while the mechanical waves do not.

Explanation:

Sun's radiation that reaches the Earth belongs to  the Infra red, Visible and the Ultraviolet  range of frequencies of the electromagnetic spectrum. Sun's rays travel through vacuum before entering the earth's atmosphere.

These rays can travel through vacuum. The speed with which electromagnetic waves travel is the same as the speed of light .

The mechanical waves are the longitudinal and the transverse waves. They require a medium to travel. In the absence of a material medium they cannot travel. Material media are  like air, water, oil, glass etc.

That's why even though both mechanical and electromagnetic waves are generated by the Sun, it is the electromagnetic waves that reach the earth.

Which of the following is not a natural source of light?a. The sun
b. Fluorescence
c. Phosphorescence
d. Oil lamps

Answers

So we want to know which is not natural source of light. Sun is the natural source of light. Flourescence, oil lamps and phosporescence are all mechanisms of creating light that are artificial and made by people. So the correct answer is b. c. and d.

Penn Foster STudents:  Oil Lamps
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