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3 years ago

Newton’s second law: Force equals mass times acceleration (=_).

Physics

1 answer:

DIA [1.3K]3 years ago

7 0

F n = ma / unbalanced force - In the direction of the force.

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The gage pressure in a liquid at a depth of 3 m is read to be 39 kPa. Determine the gage pressure in the same liquid at a depth

ioda

Answer: 117 kPa

Explanation:

For the liquid at depth 3 m, the gauge pressure is equal to = P₁=39 kPa

For the liquid at depth 9m, the gauge pressure is equal to= P₂

Now we are given the condition that the liquid is same. That must imply that the density must be same throughout the depth.

So, For finding gauge pressure we have formula P= ρ * g * h

Also gravity also remains same for both liquids

So taking ratio of their respective pressures we have

$\frac{P_{1} }{\\P_2}$ = $\frac{density * g * h_1}{density * g * h_2}$

So $\frac{39}{P_2}$ = $\frac{3}{9}$

Or P₂= 39 * 3 = 117 kPa

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3 years ago

The volume of an ideal gas changes from 0.40 to 0.55 m3 although its pressure remains constant at 50,000 Pa. What work is done o

Rama09 [41]

Answer:

w= p∆v 50000 ( 0.55-0.40) and calculate and you get it

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3 years ago

A 40.0 kg wagon is towed up a hill inclined at 18.5 degrees with respect to the horizontal. The tow rope is parallel to the incl

sp2606 [1]

Answer:

7.9m/s

Explanation:

We are given that

Mass of wagon=40 kg

$\theta=18.5^{\circ}$

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Initial velocity of wagon= $u=0$

Displacement=s=80 m

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By using $g=9.8m/s^2$

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We know that

$v^2-u^2=2as$

Using the formula

$v^2=2\times 0.39\times 80$

$v=\sqrt{2\times 0.39\times 80}=7.9m/s$

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3 years ago

Which chemical equation represents a decomposition reaction? HELP ASAP!!!!

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Answer:

C.) 2H2O to 2H2+ O2 is the equation which represents a decomposition reaction.

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3 years ago

An object is dropped from a height h. during the final second of its fall, it traverses a distance of 41.2 m. what was h?

Leya [2.2K]

41.2 = h-1/2g(t-1)^2
 {-h = -1/2gt^2-1/2g+g*t-41.2
 {h = 1/2gt^2
 summing them up
 0 = -1/2g+g*t-41.2
 41.2 +4.9 = g*t
 t = 46.1/9.8 = 4.70 sec
 h = 1/2gt^2 =4.9*(4.70^2) = 108.241 m

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3 years ago

Newton’s second law: Force equals mass times acceleration (__=___).

Newton’s second law: Force equals mass times acceleration (=_).