Is this right? Please help me. ITS SOCIOLOGY!!

Answer:

El resorte se comprime 0.38 m.

Explanation:

La distancia de compresión del resorte se puede calcular por conservación de la energía:

[tex] \Sigma E_{i} = \Sigma E_{f} [/tex]

[tex] E_{p} = E_{e} [/tex]

[tex] mgh = \frac{1}{2}kx^{2} [/tex]   (1)

En donde:

[tex]E_{i}[/tex] y [tex]E_{f}[/tex]: son las energías inciales y finales

[tex] E_{p}[/tex]: es la energía potencial gravitacional

[tex]E_{e}[/tex]: es la energía potencial elástica

m: es la masa = 1.50 kg

g: es la gravedad = 9.81 m/s²

h: es la altura

k: es la constante de fuerza = 320 N/m    

x: es la distancia de compresión

Dado que el objeto está 1.20 m sobre el resorte, entonces h es:

[tex] h = 1.20 + x [/tex]  (2)

Entonces, introduciendo la ecuación (2) en (1) y resolviendo para x tenemos:

[tex] \frac{1}{2}kx^{2} - xmg - 1.20mg = 0 [/tex]  

[tex] 160x^{2} - 14.72x - 17.66 = 0 [/tex]  

Resolviendo la ecuación cuadrática anterior tenemos:

x₁ = -0.29 y x₂ = 0.38

Tomando el valor positivo entonces, el resorte se comprime 0.38 metros.

Espero que te sea de utilidad!  

Answer:

Total internal reflection

Answer:

[tex]r=7\times 10^{-16}\ m[/tex]

Explanation:

The force between charges, [tex]F=-4.4\times 10^{33}\ N[/tex]

Positive charge, [tex]q_1=8\times 10^{-4}\ C[/tex]

Negative charge, [tex]q_2=-3\times 10^{-4}\ C[/tex]

We need to find the distance between charges. The force of attraction between charges is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Where

r is the distance between charges

[tex]r=\sqrt{\dfrac{kq_1q_2}{F}} \\\\r=\sqrt{\dfrac{9\times 10^9\times 8\times 10^{-4}\times 3\times 10^{-4}}{4.4\times 10^{33}}} \\\\r=7\times 10^{-16}\ m[/tex]

So, the distance between charges is [tex]7\times 10^{-16}\ m[/tex].

Answer:

Earth, Water, Air, Fire.

Explanation:

Answer:

Earth, Water, Air, Fire

Explanation:

Answer:

The answer is simple machine!!

Answer:

1. True.

2. False.

3. True.

Explanation:

A. True: An object has acceleration if its velocity is changing. In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

B. False: Force is measured in joules. Force is a product of the mass of an object and its rate of acceleration. Thus, force is actually measured in Newton.

C. Gravity is a force. Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Answer:

How much an object has moved

Answer:

C. Surface area

Explanation:

The rate of  chemical reaction depends on various factors such as:

Effect of surface area of reactants: the rate of a chemical reaction can be increased by increasing the the area of contact of the reacting substances. This is especially important when one or more of the reactants are solids., because only the particles of the solid that are exposed are able to take part in the reaction at each instant of time. Therefore, the greater the surface area of the solid reactant particles the faster the reaction.

The surface area of solid reactants can be increased by grinding or pelletizing, thus allowing for a greater contact between the reacting particles,

The instance in which one of the solid reactants was treated in a coffee grinder before adding to the reaction container is one way of increasing the surface area of a reactant.

Answer:

13 N

Explanation:

From the question,

If two forces act at right angle to each other, Their result force can be calculated using Pythagoras theorem.

R'² = R₁²+R₂²....................... Equation 1

Where R' = Resultant force, R₁ = First force, R₂ = Second force.

Given: R₁ = 12 N, R₂ = 5 N

Substitute these values into equation 1

R'² = 12²+5²

R'² = 144+25

R'² = 169

R' = [tex]\sqrt{169}[/tex]

R' = 13 N.

Hence the resultant force is 13 N

Answer:

Hey mate....

Explanation:

This is ur answer.....

A pascal is a pressure of one newton per square metre, or, in SI base units, one kilogram per metre per second squared. For example, standard atmospheric pressure (or 1 atm) is defined as 101.325 kPa. The millibar, a unit of air pressure often used in meteorology, is equal to 100 Pa.

Hope it helps you,

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Follow me! :)

pascal is the SI unit of pressure symbolized by Pa

1 Pa=1N/m^2

1Pa=1kg/ms^2

Answer:

I think its B.

Explanation:

Answer:

A ball moving through the air.

Explanation:

The ball has momentum which is a form of kinetic energy.

I don't know if that is correct, but I hope it helps!!!!

change in position of an object we use the

symbol ∆×\ delta×∆×for displacement, where ∆. means

"change" ∆ vector quantity with units of distances start

text ,d,I,s,t,a,n,c,e , end text.

Answer:

10 kg

Explanation:

4 because it's closest to the star

Answer:

Explanation:

weight ( w ) = 100 N

mass (m) = ?

WE know

g = 10 m/s²

w = m * g

or

m = w / g

m = 100 / 10

m = 10 kg

hope it will help :)

Answer:

5.2 kg

Explanation:

Answer:

you would fall forward due to inertia of motion..

Answer:

Hi I'm happy to meet you and the answer for your question is true. If you need me to state the law ask me

Answer:

Where is kinetic energy the least?, and most?

Explanation:

Least : When the Moon is farthest from Earth in its nearly elliptical orbit, its speed is least. Its kinetic energy has become least, and its potential energy is greatest.

Further : Kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.

May be different for you, but i really hope I helped out.

Answer: [tex]0\ ms^{-1}[/tex]

Explanation:

Given

If an object reaches the topmost point i.e. it cannot travel beyond that point as its velocity is zero at the topmost point

As some velocity is needed to move the object, so velocity at topmost point is zero

Complete Question:

The momentum of an object is determined to be 7.2 × 10-3 kg⋅m/s. Express this quantity as provided or use any equivalent unit. (Note: 1 kg = 1000 g).

Answer:

7.2 gm/s.

Explanation:

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

[tex] Momentum = mass * velocity [/tex]

Given the following data;

Momentum = 7.2 * 10^-3 kgm/s

1 kg = 1000 g

Substituting the unit in kilograms with grams, we have;

Momentum = 7.2 * 10^-3 * 1000 gm/s

Momentum = 7.2 gm/s.

Answer:

they are both clocks i think please be right

Answer:

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification. Humans create horrible pollution, making climate change.

Answer:

what i commented.

Explanation: