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Serhud [2]
3 years ago
13

Which statement correctly describes the classification of chemical reactions into different categories?(1 point) Not all reactio

ns fit into a category, and a reaction can fit into only one category. Not all reactions fit into a category, and a reaction can fit into only one category. Not all reactions fit into a category, and some reactions can fit into more than one category. Not all reactions fit into a category, and some reactions can fit into more than one category. All reactions fit into a category, and a reaction can fit into only one category. All reactions fit into a category, and a reaction can fit into only one category. All reactions fit into a category, and some reactions can fit into more than one category. All reactions fit into a category, and some reactions can fit into more than one category.
Physics
1 answer:
VMariaS [17]3 years ago
4 0

Answer:

its a

Explanation:

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What causes the earth to rotate
Alex73 [517]
The Earth rotates due to the manner in which it was formed. Earth began its rotation from the spinning movement of the accretion disk. In short, the earth rotates because of angular momentum caused by the accretion disk.
4 0
4 years ago
An athlete produced 840 watts of power in 0.6 seconds. How much work did this individual perform during the exercise
Veseljchak [2.6K]

An athlete produced 840 watts of power in 0.6 seconds. And will produce 504 joule of work did this individual perform during the exercise.

<u>Solution:</u>

we know that power is the work done completed in a given interval of time.

Power = \frac{work}{time}

also, Work = Power × Time

Work = 840 × 0.6 = 504 joule

What is Power?

  • The quantity of work that can be accomplished in a certain amount of time is measured by power.
  • Power is expressed in joules per second (J/s) this is because work is denoted by the symbol J and time by the symbol s.
  • This is the watt, which is also known as the power unit in SI (W). One joule of labor per second is equal to one watt.
  • The number of watts that a device uses is indicated on labels for lightbulbs and other small appliances like microwaves.
  • A force must be applied in order for work to be completed, and there must also be motion or displacement in the force's direction.
  • The amount of force multiplied by the distance moved in the force's direction is known as the work done by a force acting on an item. Work has no direction and only magnitude. Work is a scalar quantity as a result.

Know more about work power numerical brainly.com/question/181496

#SPJ4

7 0
2 years ago
Total charge is uniformly distributed on a spherical surface of radius R. The sphere is centered at the origin and spins around
Flauer [41]

Answer:

c

Explanation:

i have a A in physics

5 0
3 years ago
At what time t1 does the block come back to its original equilibrium position (x=0) for the first time? Express your answer in t
Furkat [3]

Answer:

 t_1 = 0.5*pi*sqrt( m / k )    

Explanation:

Given:

- The block of mass m undergoes simple harmonic motion. With the displacement of x from mean position is given by:

                                     x(t) = A*cos(w*t)

Find:

- At what time t1 does the block come back to its original equilibrium position (x=0) for the first time?

Solution:

- The first time the block moves from maximum position to its mean position constitutes of 1/4 th of one complete cycle. So, the required time t_1 is:

                                            t_1 = 0.25*T

- Where, T : Time period of SHM.

- The time period for SHM is given by:

                                         T = 2*pi*sqrt ( m / k )

Hence,

                                   t_1 = 0.25 * 2 * pi * sqrt( m / k )

                                   t_1 = 0.5*pi * sqrt( m / k )    

6 0
3 years ago
The luminous flux of a torch of intensity 50 cd is?
RSB [31]

Answer:

i dont know i am right but here Luminous intensity is defined as dI=dΨλ / dΩ, where dΨλ is the luminous flux (light energy flux in watts per m2) emitted within a solid angle dΩ. The light energy flux may be expressed in terms of the incident x-ray energy flux and the x-ray absorption and conversion properties of the scintillator(7,8,9).

Explanation:

5 0
3 years ago
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