can u answer these?

Question

1.state newton's 3 laws of force.
2.define weight.
3.what is power? give its SI unit.
4.state the law of conservation of mass and the law of constant proportions.
5.state the universal law of gravitation.
first one with all right answers will win a price of 10 points!!!
why not it be u!!!???

Answer 1

. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.


For every action there is an equal and opposite reaction.

The gravitational weight of a body is the force with which the Earth attracts the body. By extension, the term is also used for the attraction of the Sun or a planet on a nearby body. This force is proportional to the body's mass and depends on the location. Because the distance from the surface to the center of the Earth decreases at higher latitudes, and because the centrifugal force of the Earth's rotation is greatest at the Equator, the observed weight of a body is smallest at the Equator and largest at the poles. The difference is sizable, about 1 part in 300. At a given location, the weight of a body is highest at the surface of the Earth. Weight is measured by several procedures.

The notion that mass, or matter, can be neither created nor destroyed. According to conservation of mass, reactions and interactions which change the properties of substances leave unchanged their total mass; for instance, when charcoal burns, the mass of all of the products of combustion, such as ashes, soot, and gases, equals the original mass of charcoal and the oxygen with which it reacted.

The special theory of relativity of Albert Einstein, which has been verified by experiment, has shown, however, that the mass of a body changes as the energy possessed by the body changes. Such changes in mass are too small to be detected except in subatomic phenomena. Furthermore, matter may be created, for instance, by the materialization of a photon (quantum of electromagnetic energy) into an electron-positron pair; or it may be destroyed, by the annihilation of this pair of elementary particles to produce a pair of photons.

law of definite proportions law stating that every pure substance always contains the same elements combined in the same proportions by weight

A principle, put forth by Sir Isaac Newton (1642-1727), which states that every object in the universe attracts every other one with a force proportional to the masses of each, and inversely proportional to the square of the distance between them.

AHHHH! any one copy my answer and i'll slit their throats

Answer 2

1.Newton's Third Law of Motion
"For every action, there is an equal and opposite reaction."
2.Weight
The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. It's SI unit is newton.
3.Power
Power is the rate at which work is performed or energy is transferred. It's SI unit is watts.
4.a)Law of conservation of mass
A relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.
4.b)Law of constant proportions
law stating that every pure substance always contains the same elements combined in the same proportions by weight.
5.Universal law of gravitation:
Every single point mass attracts every other point mass by a force heading along the line combining the two. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses:

F = G \frac{m_1 m_2}{r^2}

F is the magnitude of the gravitational force between the two point masses
G is the gravitational constant
m1 is the mass of the first point mass
m2 is the mass of the second point mass
r is the distance between the two point masses .

Answer 3

Although I have copied some of them from some other sources, I am glad that I have gained knowledge about these topics. I hope this satisfies you:
1. Newton’s Three laws of force are:
I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
II. The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.
III. For every action there is an equal and opposite reaction.


2. In the physical sciences, weight is a measurement of the gravitational force acting on an object. In everyday parlance (and, for historical reasons, still in some scientific terminology), "weight" is often used as a synonym for mass.

3. The rate of doing work is called power.
P=w/t
Where, P is Power, w is Work and t is Time.
Units:
CGS: Ergs/sec.
MKS: Joules/sec.
SI: Watt

4. LAW OF CONSERVATION OF MASS: A relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.
LAW OF DEFINITE PROPORTIONS - (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight.

5. Every single point mass attracts every other point mass by a force heading along the line combining the two. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses:
where:
F is the magnitude of the (repulsive) gravitational force between the two point masses
G is the gravitational constant
m1 is the mass of the first point mass
m2 is the mass of the second point mass
r is the distance between the two point masses

Answer 4

weight- the force by wich the earth attracts a body to its surface .

power- rate of doing work. S.I. unit- watt

universal law of gravitation- it states that every body in the universe, attracts every other body with a force which is directly proportional to the product of thier and inversely proportional to the square of the distances b/w thier centres.

newton's 3rd law of motion- to every action thier is equal and opposite reaction.

law of constant proportions- in a pure chemical compound, elements are always present in a definite proportion by mass.

law of consevation by mass- in a chemical reaction, the sum of the masses of the reactions and products remain unchanged.

thats all! u dont study or wat?? and let me tell u that newton had 3 laws of motion and not 3 laws of force!!!

Answer 5

See any class IX physics book.
BTW are you empowered to choose points?

Answer 6

dude i havent dun that many Q's in my exam paper n m gonna answer u...LOL whose going to answer those many q's ....search it on the net or go to http://en.wikipedia.org/
!!!

ps: but m sort of good at physixx...hehe

Answer 7

1.law1,law2&law3
2.the one which is measured interms of kgs,grams,pounds etc
3.the one i have.
4.i am from commerce background.
throw anything up, it falls down

Answer 8

1. every action has equal and oppositereaction

Answer 9

Clarify your question.

Answer 10

physics homework? do it urself buddy!