3 years ago

What is time write its SI unit

1 answer:

4 0

The SI unit of time is second

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Nataliya [291]

I think is between A&B
I think I would answer B

6 0

3 years ago

Citrus2011 [14]

Answer:

a) $(Qa*g*Vb)-(Qh*Vb*g)=(Qh*Vb*a)\\where \\g=gravity [m/s^2]\\a=acceleration [m/s^2]$

b) a = 19.61[m/s^2]

Explanation:

The total mass of the balloon is:

$massball=densityheli*volumeheli\\\\massball=0.41 [kg/m^3]*0.048[m^3]\\massball=0.01968[kg]\\\\$

The buoyancy force acting on the balloon is:

$Fb=densityair*gravity*volumeball\\Fb=1.23[kg/m^3]*9.81[m/s^2]*0.048[m^3]\\Fb=0.579[N]$

Now we need to make a free body diagram where we can see the forces that are acting over the balloon and determinate the acceleration.

In the attached image we can see the free body diagram and the equation deducted by Newton's second law

6 0

2 years ago

Deffense [45]

..........................................................

8 0

2 years ago

viva [34]

Answer:

i think C

Explanation:

3 0

3 years ago

Assoli18 [71]

Tidal, wind, and oil energy are derived from the sun. Nuclear isn't.

7 0

3 years ago

What is time write its SI unit​