We'll assume they start out at the same time, although the question doesn't say that.
Kim's lead over Alex grows at (12 - 8) = 4 mph.
After 6 hours, they're (6 x 4) = 24 miles apart.
24 miles apart
parrel
There isn't enough information to give you a definitive answer. We also need to know in which direction they are riding. If they are both riding in a straight line in the same direction, they will be 3 miles apart at the end of the first hour, 6 miles apart at the end of the second our, and 23 miles apart at the end of 7 hours and 40 minutes. If they are both riding in a straight line in opposite directions, they will be 17 miles apart after the first hour, and 23 miles apart after 1 hour, 21 minutes, and 10.6 seconds.
35
After 12 hours, the first boat is at a distance 14*12 = 168 miles east of the port. The second boat is at a distance 28*12*cos(30) = 291.0 miles north and 28*12*sin(30) = 168.0 miles east of the port. Since their Eastward displacement is the same, the distance between the two is the Northwards displacement of the second boat = 291.0 miles.
24 miles apart
In a compression wave, the medium is displaced in the same direction that the wave is travelling. This means that the particles of the medium move closer together and then farther apart as the wave passes through.
no he did not because if he did then one direction would be broken apart
parrel
If a car travels between two towns that are 80 miles apart in 2 hours, they travel at a rate of 40 miles per hour.
Their names, their looks, how they dress..
To find when the cyclists will be 10 miles apart, you can set up a distance equation. Since they are traveling in the same direction, the relative speed at which they are moving apart is 15 - 12 = 3 mph. So, the time it will take for them to be 10 miles apart is 10 miles / 3 mph = 3.33 hours.
Sound travels faster under water. Thus when you are under water you can hear sounds OK, but you are unable to discern where the sounds are coming from like you can in air. This is because you ears/brain work out direction by the time delay of sound reaching each ear (your ears are a little distance apart thus sound from one direction hits one ear before the other). Under water because sound travels faster the delay is too short for the brain to distinguish.
No way! At least, not the last time i checked
They mean apart, not and in different direction.
No, solar eclipses can be years apart.
Sound travels slowest through air because the particles in the air are spread apart.