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3 years ago

Which model shows 4 electrons in the outer shell of the atom?

Physics

2 answers:

nasty-shy [4]3 years ago

8 0

D.4
hope it helps have a great day!

EastWind [94]3 years ago

3 0

Answer: d (4)

I think

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A block of mass m1 = 290 g is at rest on a plane that makes an angle θ = 30° above the horizontal. The coefficient of kinetic fr

GrogVix [38]

Answer:

The speed of the block when is fallen 30cm

v=0.726 $\frac{m}{s}$

Explanation:

∑F= (m2)g - ƒ - (m1)g*sin(θ) = (m1)a

g = 9.81 m/s²

ƒ = μN = μ(m1)g

$(m2)*g - u*(m1)*g - (m1)*g*sin(\alpha ) = (m1)*a$

(0.200)(9.81) - (0.1)(0.290)(9.81) - (0.290)(9.81)sin(30°) = (0.290)a

$(0.200kg)(9.81\frac{m}{s^{2}}) - (0.1)(0.290kg)(9.81\frac{m}{s^{2}}) - (0.290kg)(9.81\frac{m}{s^{2}})sin(30°) = (0.290kg)*a$

$0.511101=0.29*a\\a=0.879\frac{m}{s^{2} }$

$v_{f}^{2}=v_{o}^{2}+2*a(x_{f}^{2}-v_{o}^{2})\\v_{o}=0\\v_{o}=0\\v_{f}^{2}=2*a(x_{f})\\v_{f}=\sqrt{2*a(x_{f})}\\v_{f}=\sqrt{2*0.879\frac{m}{s^{2}}*0.30m} \\v_{f}=0.726 \frac{m}{s}$

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4 years ago

If a person gets eight hours of sleep every night but still feels exhausted in the morning he or she may suffer from

tatuchka [14]

I believe the and is B

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3 years ago

Farthest Galaxy in the universe

Kitty [74]

Answer:

Galaxy MACS0647-JD

Explanation:

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3 years ago

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How can you find the reading of main scale and vernier scale

anygoal [31]

Answer:

this pdf should help you out

Explanation:

Download pdf

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2 years ago

What is velocity, because it describes both speed and direction?

Vladimir [108]

Answer:

Velocity is a vector quantity. It has both, magnitude and direction. Velocity is the rate of change in the position of a body with respect to a frame of reference. One component is the magnitude of velocity which is speed. The other one is its direction.

Explanation:

Speed is a scalar quantity.

Velocity is a vector quantity.

There are two types of quantities:

1. Scalar quantity:

A scalar quantity is a quantity which is described by its magnitude alone.

2. Vector Quantity:

A vector quantity is a quantity which is described completely by both, its magnitude and direction.

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3 years ago