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MA_775_DIABLO [31]
3 years ago
12

What is the reason that a fixed pulley makes work easier

Physics
2 answers:
ehidna [41]3 years ago
8 0
It cuts the load in half
marishachu [46]3 years ago
6 0
Hola que pex
...........

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Explain why the model of this chemical reaction obeys the Law of Conservation of Matter. A) because there are the same number of
Sav [38]

Answer:

(A) because there are the same number of atoms of each element shown on both sides

Explanation:

The Law of conservation of mass says that in a reaction the matter of the products should be equivalent to the matter of the reactants and the mass of the system should remain constant over time.

In a chemical reaction, while atoms bond is breaking of 1 substance than new bonds are formed in another substance and new substances are formed. However, in the overall reaction, they keep the same elements, no new elements can go and come from the outside. For example:

HCl + NaOH -----> NaCl + H2O

In this reaction, on both sides the same number of atoms of each element are present.

5 0
3 years ago
A ball is thrown upward in the air by a passenger on a train that is moving with constant velocity. Describe the path of the bal
cestrela7 [59]

Answer:

a) For the passenger the ball is seen to go up in a straight line path, and fall back to the hands of the passenger in a straight line path.

b) For a stationary observer on the ground, the ball is seen to take a parabolic path from when it is thrown up to when it fall down back on the palms of the passenger.

Explanation:

If a ball is thrown up in a vehicle moving with a constant velocity, the ball will be seen as the passenger, who is on the same frame of reference as the ball, to go up and down in a vertical straight line path. For an observer on the ground, this is different, as the ball is seen to to have both a relative vertical and horizontal component of motion, making the ball take a parabolic path from the time it was thrown, to when it falls back to the hands of the passenger.

8 0
4 years ago
Which of the following is an example of potential energy?
tigry1 [53]
The answer is b because it’s something being stretched and it
7 0
3 years ago
Read 2 more answers
"Energy is never created of destroyed, it only transforms from one form to another" is the definition of… A. The Law of Diminish
Serga [27]

Answer:

B. The Law of Conservation of Energy

Explanation:

In Science, energy can be defined as the ability of an object or body to do work. There are two (2) main types of energy and these are;

I. Kinetic energy: it can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

Where, K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

II. Potential energy: it can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Additionally, the various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy etc.

Hence, energy is never created of destroyed, it only transforms from one form to another" is the definition of The Law of Conservation of Energy.

8 0
3 years ago
What is the simple average of these two velocities (0m/s, 0.4m/s)​
FromTheMoon [43]

The answer should be 0.2 :D

7 0
4 years ago
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