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vodka [1.7K]
3 years ago
15

Which example best represents an object with balanced forces acting upon it? A) A boat moving through the water. B) A book sitti

ng on a high shelf. C) A wagon rolling down a steep hill. D) A baseball thrown thrown in the air.
Physics
2 answers:
TEA [102]3 years ago
6 0
I am 100% positive that the answer is B
Kobotan [32]3 years ago
5 0
B. A book sitting on a shelf. The books force is going down while the shelf's force is moving up against the book at an equal force.The answer would be B.

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A man pushes a 10-kg block 10 m, along a rough, horizontal
abruzzese [7]

Answer:

hope you can understand

8 0
3 years ago
1. A 455 g mass, hanging at rest on a spring, stretches the spring 22.4 cm beyond its relaxed
pishuonlain [190]

Answer:

19.9 N/m

Explanation:

From the question,

Applying Hook's law

F = Ke.................. Equation 1

Where F = Force on the spring, k = spring constant, e = extension

But the force on the spring is the weight of the mass

Therefore,

mg = ke.................. Equation 2

Where m = mass. g = acceleration due to gravity

make e the subject of the equation

e = mg/e................ Equation 3

Given: m = 455 g = 0.455 kg, e = 22.4 cm = 0.224 m,

Constant: g = 9.8 m/s²

Substitute these values into equation 3

e = (0.455×9.8)/0.224

e = 19.9 N/m

6 0
3 years ago
A particle is attached to a spring and is pushed so that the spring is compressed more and more. As a result, the spring exerts
ad-work [718]
In order for particles to perform a simple harmonic motion, we must follow the law of force of the form F = -kx, where x is the displacement of the object from the equilibrium position and k is the spring constant. The force shown in <span>F = -kx is always the restoring force in the sense that the particles are pulled towards the equilibrium position.

The repulsive force felt when the charge q1 is pushed into another charge q2 of the same polarity is given by Coulomb's law
                                F = </span><span>k *q1* q2 / r^2.
</span>It is clear that Coulomb's law is an inverse-square relationship. It does not have the same mathematical form as the equation <span><span>F = -kx.</span> Thus, charged particles pushed towards another fixed charged particle of the same fixed polarity do not show a simple harmonic motion when released. Coulomb's law does not describe restoring force. When q1 is released, it just fly away from q2 and never returns.</span>
5 0
4 years ago
What is net netforce?
melisa1 [442]
In mechanics, the net force is the vector sum of forces acting on a particular or object
6 0
3 years ago
A force vector has a magnitude of 599 newtons and points at an angle of 40.8° below the positive x axis. What is the x scalar co
ASHA 777 [7]

Answer:

F_{x}=453.44N

Explanation:

Given data

Force F=599 N

Angle α=40.8°

To find

x scalar component

Solution

The Scalar x component can be found by

F_{x}=FCos\alpha  \\F_{x}=599Cos(40.8)\\F_{x}=453.44N

The Scalar y component can be found by

F_{y}=-FSin\alpha  \\F_{y}=-599Sin(40.8)\\F_{y}=-391.4N

3 0
3 years ago
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