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iren [92.7K]
2 years ago
10

Can you help with this question please

Physics
1 answer:
Iteru [2.4K]2 years ago
7 0

Answer:

First answer to the first question is Two people pulling a rope with the same force in a opposite direction.  The other one would be 2.72N        

Explanation:

Hope this helps you :)

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Two cylinders with the same mass density rC = 713 kg / m3 are floating in a container of water (with mass density rW = 1025 kg /
cluponka [151]

Answer:

\dfrac{h_2}{h_1}=\dfrac{1}{2}

Explanation:

Lets take h is height of cylinder immersed in the water

We know that for floating body

h=\dfrac{\rho_cL}{\rho_l}

Where \rho_c density of cylinder

\rho_l density of water

For both cylinder fluid is same also density of cylinders are also same

So

\dfrac{h_1}{L_1}=\dfrac{h_2}{L_2}

\dfrac{h_1}{h_2}=\dfrac{L_1}{L_2}

\dfrac{h_1}{h_2}=\dfrac{20}{10}

\dfrac{h_2}{h_1}=\dfrac{1}{2}

3 0
2 years ago
Which explanation describes the forces involved for a person to walk down the sidewalk? A. The person's feet push backward on th
cluponka [151]

C. The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.

This is due to our kick back motion forced on the sidewalk when we walk, and the resistance of us walking on it createsa push forward.

Hope this helps!

6 0
3 years ago
Read 2 more answers
Which of the following will attract one another? A. The north pole of magnet and the south pole of another magnet B. The north p
Elena L [17]
A. is the correct answer
7 0
3 years ago
Total mechanical energy (The sum of kinetic and potential energy
victus00 [196]

Answer:

Emechanical=mgh+\frac{1}{2}mν²

Explanation:

The equation for the total mechanical energy is:

Emechanical=Epotential+Ekinetic

In which,

Epotential=mgh; m: mass of the body, g: gravity; h: height

Ekinetic=\frac{1}{2}mν²; m: mass of the body, ν: velocity of the body

So,

Emechanical=mgh+\frac{1}{2}mν²

5 0
3 years ago
In a choir practice room, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the
ololo11 [35]

Answer:

4.98 m

Explanation:

Given that

Width of the mirror, d = 0.6 m

Organist distance to the mirror, s = 0.78 m

Distance between the singer and the organist, S = 5.7 + 0.78 = 6.48 m

Width of north wall, D?

Using the simple relationship

D/S = d/s, on rearranging

D = dS /s

D = (0.6 * 6.48) / 0.78

D = 3.888 / 0.78

D = 4.98 m

Therefore, we can conclude that the Width of north wall is 4.98 m

7 0
2 years ago
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