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4 years ago

What is the magnitude of the dipole moment formed by separating a proton and an electron by 100 pm

1 answer:

amm18124 years ago

3 0

<span>When two electrical charges, of opposite sign and equal magnitude, are separated by a distance, a dipole is established. The size of a dipole is measured by its dipole moment</span><span> . Dip</span>ole moment is measured in Debye units, which is equal to the distance between the charges multiplied by the charge

<span>Dipolemoment 'D' = e x d where e= charge and d= distance by which charge is separated. </span><span>
In this case e = charge on electron = 1.6 x10^-19 C</span>

D = 1.6 x10^-19 C ( 1x10^-10 m) =1.6x10^-29 Cm

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An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track

BartSMP [9]

1) 234 s, 6.18 km

The position of the car at time t is described as

$x_c(t) = v_c t$

where

$v_c = 95 km/h$ is the velocity of the car

The position of the head of the train instead is given by

$x_t(t) = d + v_t t$

where

d = 1.30 km is the initial distance between the car and the head of the train

$v_t = 75 km/h$ is the velocity of the train

The car overtakes the train when

$x_c =x_t$

Substituting and solving for t,

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95-75}=0.065 h = 234 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.065 h)=6.18 km$

2) 27.5 s, 0.72 km

In this case, the train is travelling in opposite direction, so we can write

$v_t = -75 km/h$

Again, we can use the same equation as before

$x_c =x_t$

And solving for t, we find

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95+75}=0.0076 h = 27.5 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.0076 h)=0.72 km$

5 0

3 years ago

On top of a cliff of height h, a spring is compressed 5m and launches a projectile perfectly horizontally with a speed of 75 m s

omeli [17]

Answer:

The height of the cliff is 121.276 m

Explanation:

Given;

initial velocity of the projectile, v₁ = 75 m/s

final velocity of the projectile, v₂ = 90 m/s

spring compression = 5 m

Apply the law of conservation of energy;

mgh₀ + ¹/₂mv₁² = mgh₂ + ¹/₂mv₂²

gh₀ + ¹/₂v₁² = gh₂ + ¹/₂v²

gh₁ - gh₂ = ¹/₂v₂² - ¹/₂v₁²

g(h₀ - h₂) = ¹/₂ (v₂² - v₁²)

h₀ - h₂ = ¹/₂g (v₂² - v₁²)

h₀ = h(cliff) + 5m

when the projectile hits the ground, Final height, h₂ = 0

$h_o - 0 = \frac{1}{2g}(v_2^2-v_1^2)\\\\h_{cliff} + 5= \frac{1}{2g}(v_2^2-v_1^2)\\\\h_{cliff} = \frac{1}{2g}(v_2^2-v_1^2) - 5\\\\h_{cliff} = \frac{1}{2*9.8}(90^2-75^2) - 5\\\\h_{cliff} = 121.276 \ m$

Therefore, the height of the cliff is 121.276 m

7 0

3 years ago

A restaurant records the number of tables served each night, and the results have the values: minimum = 3, lower quartile = 14,

dybincka [34]

To choose the correct box plot, verify each of the options and make sure all the values in the plot match the values provided.

<h3>How to identify the median?</h3>

In a box plot, this value is represented by a vertical line located in the middle of the graph.

<h3>How to identify the maximum and the minimum?</h3>

The maximum is the value located on the farthest right, while the minimum is located on the farthest left.

<h3>How to identify the quartiles?</h3>

Divide the graph into 4 and analyze how much each quartile represents.

Learn more about graphs in: brainly.com/question/16608196

#SPJ1

5 0

2 years ago

A swimmer pushes backwad on water with their hand...what force allows the swimmer to move forward?

kvv77 [185]

Force that is of equal magnitude

8 0

3 years ago

A go cart with a mass of 60 kg is moving at a rate of 10 m/s. How much Kinetic Energy does the go cart have?

maria [59]

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

$k = \frac{1}{2} m {v}^{2} \\$

m is the mass in kg

v is the velocity in m/s

From the question

m = 60 kg

v = 10 m/s

We have

$k = \frac{1}{2} \times 60 \times {10}^{2} \\ = 30 \times 100 \\ = 3000$

We have the final answer as

Hope this helps you

6 0

3 years ago

Read 2 more answers