A DISTANT SPACE PROBE IS PROGRAMMED TO EMIT A RADIO SIGNAL TOWARD EARTH AT REGULAR TIME INTERVALS. ONE SUCH PULSE ARRIVES ON EARTH 2.92S AFTER IT IS EMITTED FROM THE PROBE. WHAT IS THE APPROXIMATE DISTANCE FROM THE EARTH TO THE PROBE?
A) 7.4 X 10^8M
B) 8.76 X 10^8M
C) 6.94 X 10^8M
D) 3.50 X 10^8M
E) 4.12 X10^8M
Why did the space probe send a radio signal? Because it wanted someone to pick up the space phone- it was feeling a bit lonely out there! But let's get to the question.
To find the distance from the Earth to the probe, we can use the formula:
Distance = Speed x Time
The speed of the radio signal is the speed of light, which is approximately 3 x 10^8 m/s. The time it takes for the signal to reach Earth is given as 2.92 seconds.
So, plugging in the values into the formula:
Distance = (3 x 10^8 m/s) x (2.92 s)
Calculating the multiplication, the approximate distance from the Earth to the probe is:
Distance ≈ 8.76 x 10^8 m
Therefore, the correct option is B) 8.76 x 10^8 m. It seems like the probe was quite a distance away, doesn't it?
To determine the approximate distance from the Earth to the probe, we can use the formula for the distance traveled by a radio signal:
Distance = (Speed of Light) x (Time)
The speed of light is approximately 3 x 10^8 m/s.
Substituting the given time interval of 2.92s into the formula, we have:
Distance = (3 x 10^8 m/s) x (2.92s)
Calculating this, we get:
Distance ≈ 8.76 x 10^8 m
Therefore, the approximate distance from the Earth to the probe is option B) 8.76 x 10^8M.
To calculate the approximate distance from the Earth to the probe, we can use the formula for distance:
Distance = Speed × Time
The speed of a radio signal is the speed of light, which is approximately 3 × 10^8 meters per second.
So, using the given time interval of 2.92 seconds, we can calculate the distance as:
Distance = (3 × 10^8 m/s) × (2.92 s)
Distance = 8.76 × 10^8 meters
Therefore, the approximate distance from the Earth to the probe is 8.76 × 10^8 meters.
The correct answer is B) 8.76 × 10^8M.
Multiply the travel time by the speed of light and see which os the choices is closest.
You should have memorized the speed of light by now.