B- the sun
C- stars
D- meteoroids
Is from science
1) 4 m/s
2) 5 m/s
3) 3 m/s
4) 2 m/s
Answer:
It takes for the radio signal to travel from earth to the spaceship.
Explanation:
Given:
The frequency of the radio signal = hertz
Distance = meters
To Find:
The time taken for the radio signal to travel from the earth to the spaceship= ?
Solution:
we know that the time taken can be found by dividing the distance travelled by the speed at which the signal travels
So
Here the speed of the radio signal is equal the the speed of light
Now substituting the values,
Time taken is
=>
=>
=>
The time taken for the 2×10⁶ Hz radio signal to get to the spaceship from Earth is 243.33 s
Speed is the distance travelled per unit. Mathematically, it can be expressed as:
Speed = distance / time
speed = distance / time
3×10⁸ = 7.3×10¹⁰ / time
Cross multiply
3×10⁸ × time = 7.3×10¹⁰
Divide both sides by 3×10⁸
Time = 7.3×10¹⁰ / 3×10⁸
Time = 243.33 s
Learn more about speed:
#SPJ5
Answer:depends on where and season and time of day
Answer:
hot
Explanation: