Answer:
c is correct
Explanation:
Steel is a metal that is made from iron and carbon. During the steel making process, iron & carbon are melted together, and is allowed to harden into a solid. The iron and the carbon DO NOT chemically react with each other. After the steel was made, 20 samples were taken from one piece and tested. Each sample contained 98% iron and 2% carbon.
Which of the following terms BEST describes steel? homogeneous mixture
Answer:
On average a galaxy has, between <u>800 billion and 3.2 trillion planets.</u>
Answer:
Average force exerted on car = 250,000 N or 250 KN
Explanation:
Given:
Initial speed u = 20 m/s
Final speed v = 0 m/s
Total distance covered = 1.2 m
Find:
Average force exerted on car
Computation:
v² = u² + 2as
0² = 20² + 2(a)(1.2)
a = -166.67 m/s² or 166.67 m/s²
Average force exerted on car = Ma
Average force exerted on car = (1,500)(166.67)
Average force exerted on car = 250,000 N or 250 KN
There are many ways to calculate force. However, they are completely different aspects. The force on an area is pressure, so F = p*A. In magnetic fields you use another formule (forgot the formule atm). Unless you define what kind of force you are looking for, I can't help you any further.
Answer:
Upward force on the boy will be 1024 N
Explanation:
We have given mass of the boy m = 80 kg
Acceleration due to gravity
It is given that elevator is ascending with acceleration of
So net acceleration on the boy = 9.8+3 = 12.8 ( As the car elevator is moving ascending )
So upward force on the boy will be equal to F = m(g+a)
So
So upward force on the boy will be 1024 N