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Trava [24]
3 years ago
5

What is the recommended amount of time that a teenager should be participating in physical activity

Physics
1 answer:
zmey [24]3 years ago
8 0

The answer is B) 60 min.

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9. If everything in the universe – including atoms and particles stop moving, does time stop? Or does time continue even if ever
Vedmedyk [2.9K]
Time stops everything is made out of atoms so if atoms freeze everything freezes
5 0
3 years ago
5. How much heat is generated when an
Mila [183]

Answer:

I HOPE THIS IS CORRECT

Explanation:

Power of water =2 kw=2000w

Mass of water =200kg

difference in temperature ΔT=70−10=60oC

Concept

energy required to heat the water = energy given by water in time t=pt

energy required to increase tempeature of water by 60oC,Q=msΔT

S= specific heat =4200J/kgoC

              pt=msΔT

   2000×t=200×4200×60

      t=25200  

or   t=25.2×103sec.

6 0
3 years ago
A bike accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4m .determine the acceleration of the bike.
sergeinik [125]
Given: Change of x is 35.4m, Velocity Final=7.10 m/s, Velocity Initial=0m/s
Find: Acceleration
Analysis:
Vf²=Vi²+2aΔx (Velocity final squared equals Velocity initial squared plus 2 times acceleration times change of x)
(7.10 m²/s)²=(0 m/s)²+2a(35.4 m)
50.41 m/s²=(70.8 m)a
a=0.712 m/s²
5 0
3 years ago
A farmer had 15 sheep, and all but 8 died. How many are left?
Troyanec [42]
So he has 7 sheepleft if i did it correctly
15-8=7
3 0
3 years ago
Read 2 more answers
S the Sun. Points Wand
klasskru [66]

Answer:

the answer is points wand sun.

Explanation:

7 0
3 years ago
Read 2 more answers
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