I'm pretty sure it's the neutron star.
Answer:
Time = 0.317 seconds.
Explanation:
Given the following data;
Distance = 1.65km to meters = 1.65 * 1000 = 1650 meters
We know that the speed of sound in steel is equal to 5200m/s
To find the time to hear the sound of the whistle;
Time = distance/speed
Substituting into the equation, we have
Time = 1650/5200
Time = 0.317 seconds.
Therefore, it will take him 0.317 seconds to hear the sound of the whistle.
Answer:
It helps the answer look clean. It also makes the work easier to work with.
Explanation:
Instead of writing a lot of zeros, all you have to do is add exponents to the number to show how much the decimal moved.
Answer:
1.68N
Explanation:
W=F*d
KE=1/2*M*V^2
M=32kg
V= 5.1m/s
D=50m
0.5(32)(5.1^2)= 416 J
Initial energy=500 J
final energy= 416 J
lost energy= 500-416
heat lost to friction=84 J
84=F*50
84/50=F*50/50
F=1.68N
