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chubhunter [2.5K]
3 years ago
8

When a neutral atom gains or loses electrons, it becomes charged and is called a(n)

Physics
1 answer:
Daniel [21]3 years ago
6 0

Answer:

It is called an ion.

Explanation:

Atoms of elements can lose or gain electrons making them no longer neutral, they become charged. A charged atom is called an ion. When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons.

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Calculate the speed of an 8.0x10^4 kg airliner with a kinetic energy of 1.1x10^9 j ...?
Over [174]
Kinetic energy is the energy possessed by an object on motion. it is expressed as follows:

KE = 0.5mv^2

where m is the mass and v is the velocity of the object. We calculate as follows:


KE = 0.5mv^2
1.1x10^9 J = 0.5(8.0x10^4 kg) v^2
v = 165.83 m/s
6 0
3 years ago
] A new coal-fired 750 MWe power plant with a thermal efficiency of 42% burns 9000 Btu/lb coal, which contains 1.1% sulfur. a. I
Valentin [98]

Answer:

The net emissions rate of sulfur is 1861 lb/hr

Explanation:

Given that:

The power or the power plant = 750 MWe

Since the power plant with a thermal efficiency of 42% (i.e. 0.42) burns 9000 Btu/lb coal, Then the energy released per one lb of the coal can be computed as:

\mathtt{=( 0.42\times 9000\times 1055.06) J}

= 3988126.8  J

= 3.99 MJ

Also, The mass of the burned coal per sec can be calculated by dividing the molecular weight of the power plant by the energy released per one lb.

i.e.

The mass of the coal that is burned per sec =\dfrac{750}{3.99}

The mass of the coal that is burned per sec = 187.97 lb/s

The mass of sulfur burned  = \dfrac{1.1}{100} \times 187.97 \  lb/s

= 2.067 lb/s

To hour; we have:

= 7444 lb/hr

However, If a scrubber with 75% removal efficiency is utilized,

Then; the net emissions rate of sulfur is (1 - 0.75) × 7444 lb/hr

= 0.25 × 7444 lb/hr

= 1861 lb/hr

Hence, the net emissions rate of sulfur is 1861 lb/hr

8 0
2 years ago
Asap plz Which statement describes a controlled experiment?
miss Akunina [59]

Answer:

B, it includes a control group and an experimental group.

6 0
2 years ago
A bike and rider together have a mass of 60 kg. If the bike and rider have an acceleration of 2.0 m/s^2, what is the force on th
Mice21 [21]

The net force on the bike and the rider is 120 N

Explanation:

We can solve this problem by applying Newton's second law of motion, which states that:

F = ma

where

F is the net force exerted on an object

m is the mass of the object

a is its acceleration

For the bike and the rider in this problem, we have

m = 60 kg is their combined mass

a=2.0 m/s^2 is their acceleration

Therefore, the net force on them is

F=(60)(2.0)=120 N

Learn more about Newton's second law:

brainly.com/question/3820012

#LearnwithBrainly

8 0
3 years ago
A force of 10.0 N is applied to a 6.0 kg obiect to move it across a smooth surface. The surface is frictionless. Draw and level
ch4aika [34]

Answer:

Acceleration, a=1.66\ m/s^2

Explanation:

It is given that,

Force acting on the object across a smooth surface, F = 10 N

Mass of the object, m = 6 kg

Let a is the acceleration of the object. The forces acting on teh object is given by :

F = ma

a=\dfrac{F}{m}

a=\dfrac{10\ N}{6\ kg}

a=1.66\ m/s^2

So, the acceleration of the object is 1.66\ m/s^2. Hence, this is required solution.

4 0
3 years ago
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