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VladimirAG [237]
3 years ago
6

A girl pushes on a table with a 5-newton force directed to the east. Her friend pushes on the same table with a 10- newton force

directed south. Which of the following diagrams best depicts the action of the two friends?

Physics
2 answers:
nalin [4]3 years ago
4 0

Think like this: 10 is twice as much as 5.

Answer A pushes 2 squares east and 4 squares sout, being doubled just as 10 is to 5. Happy to help :)

kifflom [539]3 years ago
4 0

Explanation:

It is given that, a girl pushes on a table with a 5-newton force directed to the east. Her friend pushes on the same table with a 10- newton force directed south.  

We know that force is a vector quantity. So, diagram that depicts the action of two friends is option (d). The magnitude of the resultant force is given by :

R=\sqrt{5^2+10^2}

R = 11.18 N

Hence, the correct option is (D).

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Interactive LearningWare 10.1 reviews the concepts involved in this problem. A spring stretches by 0.0161 m when a 3.74-kg objec
yKpoI14uk [10]

Answer:

m = 3.91 kg

Explanation:

Given that,

Mass of the object, m = 3.74 kg

Stretching in the spring, x = 0.0161 m

The frequency of vibration, f = 3.84 Hz

When the object is suspended, the gravitational force is balanced by the spring force as :

mg=kx

k=\dfrac{mg}{x}

k=\dfrac{3.74\times 9.8}{0.0161}

k = 2276.52 N/m

The frequency of vibration is given by :

f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

m=\dfrac{k}{4\pi^2f^2}

m=\dfrac{2276.52}{4\pi^2\times (3.84)^2}

m = 3.91 kg

So, the mass of the object is 3.91 kg. Hence, this is the required solution.

8 0
3 years ago
A series circuit is composed of two resistors:
WITCHER [35]
<h3>Answer:</h3>

1.3 Amps

<h3>Explanation:</h3>

<u>We are given;</u>

A circuit with resistors, R1 and R2

R1 = 7 Ω

R2 = 11 Ω

Voltage = 24 V

We are required to calculate the current in the circuit.

<h3>Step 1: We need to find the effective resistance.</h3>

When resistors are arranged in series, the effective resistance is calculated by;

Rt = R₁ + R₂ + R₃ + ..........Rₙ

Therefore;

Total resistance = 7 + 11

                          = 18 Ω

<h3>Step 2: Calculate the current in the circuit</h3>

From the ohm's law;

V = IR

Rearranging the formula;

I = V/R

Thus;

I = 24 V ÷ 18 Ω

 = 1.333 Amps

= 1.3 Amps

Thus, the current in the circuit is 1.3 Amps

7 0
3 years ago
If you take a deep breath of air, you can float more easily in water because you have _____.
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Answer:

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3 years ago
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Answer:

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Explanation:

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where ;

m_1=mass of object 1\\v_1i=initial  velocity object1\\m_2=mass of object2\\v_2i=initial velocity object 2\\v_1f=final velocity object 1\\v_2f=final velocity object 2

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m_1v_1i +m_2v_2i=m_1v_1f+m_2v_2f

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305775 =87900 + 3825v₂f

305775-87900 = 3825v₂f

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Answer:

magnitude of the velocity

Explanation:

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