Using the information given, find the number of Electrons of the unknown element: 6 PROTONS, 6 NEUTRONS, 12 ATOMIC MASS​

Answer:C

Explanation:

If you are holding the ball that would be the ball would have potential energy since it it not moving. Once you drop the ball it will have kinetic energy since it’s moving. If you drop the ball from 6ft it will have more kinetic since it will have more time to accelerate. If you drop the ball from 2ft then it will have less kinetic energy since it is closer to the ground and won’t have beeping time to accelerate and get rid of the potential energy.

Answer:

c

Explanation:

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Explanation:

Uppercase B is the brown eyed gene. It's dominant over the recessive gene lowercase b, which is for blue eyes. Convention has the uppercase letter always dominate over the lowercase recessive gene.

Note the genotypes of the offspring are all Bb. This tells us we have nothing but brown eye offspring. The visual indicator also shows four brown eyes, which backs up each Bb genotype. The phenotype is the observed brown eyes that others can see, while the genotype deals with the gene pairings.

Since four offspring out of four total have brown eyes, this means the percent of brown-eyed offspring is 4/4 = 1.00 = 100%

Answer:

75km/hr

Explanation:

distance(d)=150km

time(t)=2hours

speed=distance/time

=150/2

=75km/hr

Answer:

B

Polar covalent bonds and van dar Waals forces are weak attractive forces between discrete molecules of a simple molecular structure.

Ionic bonds are strong electrostatic forces of attraction between oppositely charged ions.

Hydrogen bonds are very strong bonds between hydrogen and a highly electronegative atom e.g Oxygen, fluorine, nitrogen

Answer:

B. 1. The factors on which the mechanical advantage depends are the load, the effort, the distance moved by the load and the distance moved by the effort

2. The principle of a simple machine is the conversion of the direction and magnitude of a force input into one or more outputs of a either a different magnitude, or direction or both

3. A 75% efficiency of a simple machine means that the power of the frictional force is one quarter of the power of the input force

4. A lever is a simple machine that consists of a fulcrum over (or under) which a rigid beam can be  applied

5. There are three classes of lever

6. A pulley

Explanation:

B. 1. For simple machines, we have the Ideal Mechanical Advantage, IMA, given as follows;

[tex]IMA = \dfrac{F_r}{F_e} = \dfrac{d_e}{d_r}[/tex]

Where;

[tex]F_r[/tex] = The resistance force (The load)

[tex]F_e[/tex] = The effort force

[tex]d_e[/tex] = The distance moved by the effort

[tex]d_r[/tex] = The distance the load is moved

Therefore, the factors on which the mechanical advantage depends are the load, the effort, the distance moved by the load and the distance moved by the effort

2. The principle of a simple machine is the conversion of the direction and magnitude of a force input into one or more outputs of a either a different magnitude, or direction or both

3. The mechanical efficiency of a simple machine, η, can be expressed as follows;

[tex]\eta =\dfrac{P_{out}}{P_{in}}[/tex]

Where;

[tex]P_{out}[/tex] = The power at output

[tex]P_{in}[/tex] = The input power

[tex]P_{in}[/tex] = [tex]P_{out}[/tex] + [tex]P_{friction}[/tex]

[tex]P_{friction}[/tex] = The frictional force's power

Therefore, an efficiency of 75% means that we have;

[tex]P_{out}[/tex] = η × [tex]P_{in}[/tex] = 0.75 × [tex]P_{in}[/tex] = 0.75·[tex]P_{in}[/tex]

From which we have;

[tex]P_{in}[/tex] = [tex]P_{out}[/tex] + [tex]P_{friction}[/tex] = 0.75·[tex]P_{in}[/tex] + [tex]P_{friction}[/tex]

∴  [tex]P_{friction}[/tex] = [tex]P_{in}[/tex] - 0.75·[tex]P_{in}[/tex] = 0.25·[tex]P_{in}[/tex]

Therefore, 75% efficiency of a simple machine means that the power of the frictional force is 0.25 × (or one quarter of) the power of the input force

4. A lever is a simple machine that consists of a fulcrum over (or under) which a rigid beam can be  applied

5. There are three classes of lever

(a) First class lever (b) Second class lever and (c) Third class lever

6. A pulley

A pulley acts by lifting a load upward from a downward applied force.

Explanation:

B. 1. The factors on which the mechanical advantage depends are the load, the effort, the distance moved by the load and the distance moved by the effort

2. The principle of a simple machine is the conversion of the direction and magnitude of a force input into one or more outputs of a either a different magnitude, or direction or both

3. A 75% efficiency of a simple machine means that the power of the frictional force is one quarter of the power of the input force

4. A lever is a simple machine that consists of a fulcrum over (or under) which a rigid beam can be applied

5. There are three classes of lever

6. A pulley

Explanation:

B. 1. For simple machines, we have the Ideal Mechanical Advantage, IMA, given as follows;

IMA = \dfrac{F_r}{F_e} = \dfrac{d_e}{d_r}IMA=

F

e

F

r

=

d

r

d

e

Where;

F_rF

r

= The resistance force (The load)

F_eF

e

= The effort force

d_ed

e

= The distance moved by the effort

d_rd

r

= The distance the load is moved

Therefore, the factors on which the mechanical advantage depends are the load, the effort, the distance moved by the load and the distance moved by the effort

2. The principle of a simple machine is the conversion of the direction and magnitude of a force input into one or more outputs of a either a different magnitude, or direction or both

3. The mechanical efficiency of a simple machine, η, can be expressed as follows;

\eta =\dfrac{P_{out}}{P_{in}}η=

P

in

P

out

Where;

P_{out}P

out

= The power at output

P_{in}P

in

= The input power

P_{in}P

in

= P_{out}P

out

+ P_{friction}P

friction

P_{friction}P

friction

= The frictional force's power

Therefore, an efficiency of 75% means that we have;

P_{out}P

out

= η × P_{in}P

in

= 0.75 × P_{in}P

in

= 0.75·P_{in}P

in

From which we have;

P_{in}P

in

= P_{out}P

out

+ P_{friction}P

friction

= 0.75·P_{in}P

in

+ P_{friction}P

friction

∴ P_{friction}P

friction

= P_{in}P

in

- 0.75·P_{in}P

in

= 0.25·P_{in}P

in

Therefore, 75% efficiency of a simple machine means that the power of the frictional force is 0.25 × (or one quarter of) the power of the input force

4. A lever is a simple machine that consists of a fulcrum over (or under) which a rigid beam can be applied

5. There are three classes of lever

(a) First class lever (b) Second class lever and (c) Third class lever

6. A pulley

A pulley acts by lifting a load upward from a downward applied force.

Answer:  B

Its b increased risk of disease

increase kinetic energy of body

Answer:

yes it increases kinetic energy of body on which it is applying it also cause heat loss

Acceleration is the answer.............

Answer:

14.8J

Explanation:

PE=MGH

M=0.21

G=9.8m/s

H= 7.2 m

0.21x7.2x9.8= 14.8176 J

Answer:

1260ft

Explanation:

Given parameters:

Speed  = 105ft/s

Time  = 12s

Unknown:

Skidding distance of the truck  = ?

Solution:

To solve this problem:

       Distance  = speed x time

Now insert the parameters and solve;

  Distance  = 105 x 12  = 1260ft

Answer:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

Answer:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

Explanation:

Answer:

m=F/a so the second one

force÷ by acceleration

Answer:

A) The initial velocity is 11.27 m/s

B) The maximum velocity is 11.27 m/s

Explanation:

A) The question is with regards to kinematic motion under gravity

The the time it takes the ball to travel up and return back to the ground = 2.30 seconds

Therefore, from the kinematic equation of motion of the ball, under gravity, v = u - g·t, we have;

t = (v - u)/g

Where;

t = The total time of the motion of the ball = 2.30 seconds

v = The final velocity of the ball = 0 m/as at the maximum height

u = The initial velocity of the ball

g = The acceleration due to gravity = 9.8 m/s²

Therefore, given that we have;

The time it takes the ball to ascend = The time it takes the ball to descend

The time it takes the ball to ascend to maximum height = 2.30 second/2 = 1.15 seconds

Substituting the parameter values of the motion to maximum height, we get;

1.15 = (0 - u)/(-9.8)

-9.8 × 1.15 = -u

11.27 = u

The initial velocity, u = 11.27 m/s

B) Given that the ball experiences a deceleration on the way up, and that the motion of a parabola is symmetrical about the vertex, which is the maximum height, where the velocity is zero, we have that the initial velocity is equal to the final velocity which are both equal to the maximum velocity

Therefore, the initial velocity = The maximum velocity = 11.27 m/s.

Explanation:

Given parameters:

Frequency  = 12Hz

Unknown:

a. Period of its rotation

b. Time required to complete 86 rotations

Solution:

Frequency is the number of times of rotation per unit of time.

  Frequency  = [tex]\frac{n}{t}[/tex]  

Period is the opposite of frequency;

          Period = [tex]\frac{1}{12}[/tex]   = 0.083s

b. Time for 86 rotations;

          Since frequency  = [tex]\frac{n}{t}[/tex]  

n is the number of rotation

t is the time

             t  = [tex]\frac{n}{Frequency}[/tex]  = [tex]\frac{86}{12}[/tex]   = 7.2s

The period of rotation is 1/12 seconds and it takes 7.17 seconds to complete 86 rotations.

Time period (T) in a rotational or periodic motion is defined as the time taken to complete one rotation and frequency (f) is the reciprocal of time period.

                         f = 1/T   ⇒  T = 1/f  , given  that f = 12 Hz

                          T = 1/12 s is the time period of ne rotation

Now if time takes to complete one rotation is 1/12s , then to complete 86 rotation, the time required is

                               t = 86×(1/12) = 7.17 seconds is taken to complete 86 rotations.

Learn more about periodic motion:

https://brainly.com/question/17960431?referrer=searchResults

Answer:

The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

Explanation:

Answer: The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

Answer:

Speed: Distance per time, 400 km/h, and a scalar quantity.

Velocity: Displacement per time, 20 m/s south, and a vector quantity.

Explanation:

Hope this helps! Please mark as brainliest.

Thanks!

Answer:

[tex]v(t=120)=36m/s\\\\d(t=120)=2160 m[/tex]

Explanation:

t=2minutes = 120 seconds:

t=120s

a=0,3m/s²

The cart starting from rest, then: vo=0m/s

[tex]v(t)=vo+at[/tex]

[tex]v(t)=0,3t[/tex]

After t=120 s the velocity are:

[tex]v(120)=0,3*120\\v(120)=36m/s[/tex]

[tex]d(t)=do+vo*t+\frac{a}{2}*t^{2}[/tex]

vo=0m/s

do=0m/s

The distance after t=120s are:

[tex]d(120)=0,3*\frac{120*120}{2} \\d(120)=36*60\\d(120)=2160 m[/tex]

Answer:

Rubidium or Rb

Explanation:

Use the periodic table, the period numbers are number of shells while the group numbers are numbers of valence electrons

Answer:

Thus, each atom or ion must contain 16 protons. We are told that the ion also has 14 neutrons, meaning the mass number of the ion is 16 + 14 = 30 Because the ion has 16 protons and 19 electrons, its net charge is -3.

Answer:

Following are the solution to this question:

Explanation:

In this question, some of the information is missing that's why its solution can be defined as follows:

[tex]v= 0\\\\u= 1.0 \frac{m}{s} \\\\s= 1\\\\m= 54 \ kg\\[/tex]

Using formula:

[tex]\to v^2-u^2=2\cdot a\cdot s \\\\\to 0^2 - 1.0^2= 2 \cdot a \cdot 1\\\\\to - 1=2a\\\\\to a= -\frac{1}{2} \ \frac{m}{s^2}\\\\ \to \bold{F= m\cdot a}\\\\[/tex]

[tex]=54 \times - \frac{1}{2}\\\\= -27\ N[/tex]

Answer:

Ram is the son of Seema

Answer:

I believe D

Explanation:

I'm not for sure but I think it is D

Answer:

A. electrical to light

Explanation:

A jumbo-tron video is a very large television that is most times fitted into walls and displayed along the main roads. It has a light-emitting display(LED) property. Energy transformation is the conversion of energy from one form to another.

The video screen just as a regular television in the house emits light, sound and heat energies. Electrical energy which flows from one end to another powers the jumbo-tron video screen and is thus converted into light, heat and sound energies.

The energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

Energy transformation is the conversion of energy from one form to another.

Hence the energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

Learn more here: https://brainly.com/question/20043384

Answer:

c

Explanation:

energy doesnt affect to mass of a object

Answer:

welll

Explanation:

i honestly dk

Answer:

try finding on a website

Explanation: