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salantis [7]
2 years ago
5

It takes a car 2 hours to travel 50 miles. Why is the average speed of the car

Physics
2 answers:
JulijaS [17]2 years ago
7 0

Answer:

the answer is 50......

Assoli18 [71]2 years ago
7 0

Explanation:

average speed =total distance/time

=50/2

=25m/hr

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Which of the following statements about X-rays and radio waves is not true? Which of the following statements about X-rays and r
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Answer:

X-rays travel through space faster than radio waves.

Explanation:

Electromagnetic waves consist of oscillations of the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.

All electromagnetic waves travel in a vacuum always at the same speed, the speed of light, whose value is:

c=3.0\cdot 10^8 m/s

Electromagnetic waves are classified into 7 different types, according to their wavelength/frequency. From shortest to longest wavelength (and so, from highest to lowest frequency), we have:

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Now we can analyze the 4 statements:

X-rays and radio waves are both forms of light, or electromagnetic radiation --> TRUE. They are both types of electromagnetic waves.

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X-rays travel through space faster than radio waves. --> FALSE: all electromagnetic waves travel in space at the same speed, the speed of light.

8 0
2 years ago
which of the folloing statements about ionization energy is true? A elements toward the bottom of a group periodic table general
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6 0
3 years ago
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WINSTONCH [101]
Check the attached file for the answer.

8 0
3 years ago
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Star A and Star B have measured stellar parallax of 1.0 arc second and 0.75 arc second, respectively. Which star is closer? How
zhuklara [117]

Answer:

Star A is closer than Star B

Explanation:

As we know that in parallax method of distance measurement the angle subtended by the star when it covers a distance of one Parsec arc length, it is known as parallax angle

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now we have

distance for star A is given as

d_a = \frac{1 Parsec}{1} = 1 Parsec

distance of star B is given as

d_b = \frac{1 Parsec}{0.75} = 1.33 Parsec

So star A is closer than star B

7 0
3 years ago
How can heat be transferred across empty space?
yawa3891 [41]
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