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JulsSmile [24]
3 years ago
5

What is true about valence electrons?

Physics
2 answers:
luda_lava [24]3 years ago
8 0
The valence electrons are the one furthest from the nucleus
Fiesta28 [93]3 years ago
5 0

Answer:

furthest from the nukelest

Explanation:

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Describe all the characteristics of Earth that make it ideal for living creatures.
Lady_Fox [76]
Earths atmosphere, Temperature, Plant life and Oxygen I guess
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A proton moves with a speed of 1.00 x 106 m/s perpendicular to a magnetic field, B. As a result, the proton moves in circle of r
Softa [21]

Answer:

0.0109 m ≈ 10.9 mm

Explanation:

proton speed = 1 * 10^6 m/s

radius in which the proton moves = 20 m

<u>determine the radius of the circle in which an electron would move </u>

we will apply the formula for calculating the centripetal force for both proton and electron ( Lorentz force formula)

For proton :

Mp*V^2 / rp  = qp *VB   ∴  rp = Mp*V / qP*B    ---------- ( 1 )

For electron:

re = Me*V/ qE * B -------- ( 2 )

Next: take the ratio of equations 1 and 2

re / rp = Me / Mp                                 ( note: qE = qP = 1.6 * 10^-19 C )

∴ re ( radius of the electron orbit )

= ( Me / Mp ) rp

= ( 9.1 * 10^-31 / 1.67 * 10^-27 ) 20

= ( 5.45 * 10^-4 ) * 20

= 0.0109 m ≈ 10.9 mm

5 0
3 years ago
What is the mass defect of lithium? Assume the following: Atomic number of lithium = 3 Atomic mass of lithium = 7.0144 atomic ma
Mice21 [21]

<span>3 protons x 1.0073amu = 3.022 </span>
<span>4 neutrons x 1.0087amu = 4.035 </span>

<span>mass = 7.0567amu </span>
<span>mass defect = 7.0567 - 7.0144 = 0.0423amu.....B with your mass of Li</span>
6 0
3 years ago
Place where warm air rises and pushes down on the earths surface with less pressure
BartSMP [9]
 A high pressure area
3 0
3 years ago
The range of a projectile fired at an angle with the horizontal and with an initial velocity of feet per second is where r is me
77julia77 [94]

Answer:

θ = 8.50°

To the nearest angle

θ = 9.0°

the golfer must hit the ball at angle 9° so that it travels 120 feet.

Explanation:

The range of a projectile is the horizontal distance covered by a projectile, which can be written as;

r = (u^2× sin2θ)/g

Where;

r = range

u = initial speed

θ = angle from horizontal

g = acceleration due to gravity

Solving for θ,

sin2θ = rg/u^2

θ = 1/2 × sin⁻¹(rg/u^2) ....1

Given;

r = 120 ft

u = 115 ft/s

g = 9.81m/s = 32.2 ft/s

Substituting the values into the equation 1;

θ = 1/2 × sin⁻¹(120×32.2/115^2)

θ = 1/2 × sin⁻¹(0.29217)

θ = 1/2 × 17.00

θ = 8.50°

To the nearest angle

θ = 9.0°

5 0
3 years ago
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