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3 years ago

What is the measure of gravity force

Physics

1 answer:

notka56 [123]3 years ago

7 0

Answer:

Gravity force=mass x acceleration due to gravity

Explanation:

Gravity force=mass x acceleration due to gravity

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The force an ideal spring exerts on an object is given by , where measures the displacement of the object from its equilibrium p

Delvig [45]

Answer:

The correct answer is "1.2 J".

Explanation:

Seems that the given question is incomplete. Find the attachment of the complete query.

According to the question,

x₁ = -0.20 m
x₂ = 0 m
k = 60 N/m

Now,

⇒ $W=\int_{x_1}^{x_2}F \ dx$

⇒ $=\int_{x_1}^{x_2}-kx \ dx$

⇒ $=-k \int_{-0.20}^{0}x \ dx$

By putting the values, we get

⇒ $=-(60)[\frac{x^2}{2} ]^0_{-0.20}$

⇒ $=-60[\frac{0}{2}-\frac{0.04}{2} ]$

⇒ $=1.2 \ J$

5 0

3 years ago

A long string is pulled so that the tension in it increases by a factor of four. If the change in length is negligible, by what

rusak2 [61]

To solve this problem we will apply the concepts related to wave velocity as a function of the tension and linear mass density. This is

$v = \sqrt{\frac{T}{\mu}}$

Here

v = Wave speed

T = Tension

$\mu$ = Linear mass density

From this proportion we can realize that the speed of the wave is directly proportional to the square of the tension

$v \propto \sqrt{T}$

Therefore, if there is an increase in tension of 4, the velocity will increase the square root of that proportion

$v \propto \sqrt{4} = 2$

The factor that the wave speed change is 2.

3 0

3 years ago

What is kinetic energy

mixas84 [53]

<span>(symbol K)</span><span> Energy that an object possesses because it is in motion. It is the energy given to an object to set it in motion; it depends on the mass (</span>m) of the object and its velocity (v<span>), according to the equation K = 1/2 </span>mv2<span>. On impact, it is converted into other forms of energy such as heat, sound and light.</span>

8 0

3 years ago

The left side of the heart creates a pressure of 120 mm Hg by exerting a force directly on the blood over an effective area of 1

jeka57 [31]

Answer:

23.99N

Explanation:

Given:

Pressure created by the heart = 120mm of hg

converting the pressure into the standard unit of N/m²

1mm of hg = $\frac{1}{760}atm=\frac{1}{760}\times 1.013\times10^5N/m^2$