If the track has circumference c miles, then and the car's speeds are x and y mi/s, then since time = distance/speed,
<span>In the same direction, the slow car has a "lead" of 1 mile which the faster car has to make up. </span>
<span>1/(y-x) = 120 </span>
<span>1/(x+y) = 30 </span>
<span>120(y-x) = 30(x+y) </span>
<span>120y-120x = 30x+30y </span>
<span>90y = 150x </span>
<span>y = 5/3 x </span>
<span>1/(x + 5/3 x) = 30 </span>
<span>8/3 x * 30 = 1 </span>
<span>80x = 1 </span>
<span>x = 1/80 mi/sec = 45 mph </span>
<span>y = 75 mph</span>
Answer: Nuclear energy
Explanation:
Nuclear energy (also called atomic energy) is the energy found in the nucleus of an atom.
This energy is released spontaneously (within the stars and the sun) or artificially (in nuclear reactors built by humans) in nuclear reactions, which are divided into two types:
-Fission (separation of the components of the atom nucleous)
-Fusion (joining two light nuclei to form a heavier nucleous)
In the case of the Sun, the nuclear reactions that occur are due fusion, in which the hydrogen is converted into helium.
Answer:
Here are 5:
Distance from source to receiver
Wind speed and direction
Wind gradients
Temperature gradients
Atmospheric attenuation
and there are many more...
Hope that was helpful.Thank you!!!
Answer:Rolling friction is friction that acts on objects when they are rolling over a surface. Rolling friction is much weaker than sliding friction or static friction. This explains why most forms of ground transportation use wheels, including bicycles, cars, 4-wheelers, roller skates, scooters, and skateboards.
Explanation: