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mezya [45]
4 years ago
10

Using the black numbers on the stopwatch to answer the questions. What is the most accurate reading of seconds as indicated by t

he long second hand? a. 5.3 b. 5.6 c. 7.2 d. 53 secs its for edg i found out it was 5.3 and tenth of seconds freebie
Physics
1 answer:
jenyasd209 [6]4 years ago
4 0

a. 5.3

should be your answer

hope I Helped!!!!

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Sleep and pain both have relation.

Poor sleep schedule causes this muscle pain intensity to increase

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As we know sleep heals the muscle and fasten any injury caused to muscle, lack of it causes the healing slow.

This inflammation in muscle causes poor performance in the body.

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3 years ago
A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm
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Explanation:

Given that,

Initial speed of the billiard ball 1, u = 30i cm/s

Initial speed of another billiard ball 2, u' = 40j cm/s

After the collision,

Final speed of first ball, v = 50 cm/s

Final speed of second ball, v' = 0 (as it stops)

Let us consider that both balls have same mass i.e. m

Initial kinetic energy of the system is :

K_i=\dfrac{1}{2}mu^2+\dfrac{1}{2}mu'^2\\\\K_i=\dfrac{1}{2}m(u^2+u'^2)\\\\K_i=\dfrac{1}{2}m((30)^2+(40)^2)\\\\K_i=1250m\ J

Final kinetic energy of the system is :

K_f=\dfrac{1}{2}mv^2+\dfrac{1}{2}mv'^2\\\\K_f=\dfrac{1}{2}m(v^2+v'^2)\\\\K_f=\dfrac{1}{2}m((50)^2+(0)^2)\\\\K_f=1250m\ J

The change in kinetic energy of the system is equal to the difference of final and initial kinetic energy as :

\Delta K=K_f-K_i\\\\\Delta K=1250m-1250m\\\\\Delta K=0

So, the change in kinetic energy of the system as a result of the collision is equal to 0.    

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4 years ago
The human body uses water in many of its natural processes. water is made of two hydrogen atoms bonded to an oxygen atom. what a
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