Which wave characteristic determines color?

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge?

gizmo_the_mogwai [7]

Answer: r^-1

Explanation:

V = (k × Q) / r, where V is electric potential, k is constant and r is distance from charge.

Since Q will not change, it can be considered a constant too.

So, we can write V ∝ 1/r

which is same as V ∝ r^-1

3 0

2 years ago

A spring with a mass of 5 Kg has natural length 0.5m. A force of 35.6 N is required to maintain it stretched to a length of 0.5m

aleksandrvk [35]

Answer:

Explanation:

force constant of spring k = force / extension

= 35.6 / 0.5

k = 71.2 N / m

angular frequency ω of oscillation by spring mass system

$\omega = \sqrt{\frac{k}{m} }$

where m is mass of the body attached with spring

Putting the values

$\omega = \sqrt{\frac{71.2}{5} }$

ω = 3.77 radian / s

The oscillation of the mass will be like SHM having amplitude of 0.5 m and angular frequency of 3.77 radian /s . Initial phase will be π / 2

so the equation for displacement from equilibrium position that is middle point can be given as follows

x = .5 sin ( ω t + π / 2 )

= 0.5 cos ω t

= 0.5 cos 3.77 t .

x = 0.5 cos 3.77 t .

8 0

3 years ago

The key differences between rotational kinematics and translational kinematics is: A. Rotational kinematics must specify an axis

inn [45]

In Translational motion, the body moves in a straight line whereas in Rotational motion, the body moves in a circular path.

<h3>Differences between rotational kinematics and translational kinematics</h3>

In Translational motion, the body moves in a straight line and the body same displacement in equal interval of time while on the other hand, in Rotational motion, the body moves in a circular path and the body travels same angular displacement in equal interval of time..

Learn more about motion here: brainly.com/question/453639

8 0

2 years ago

You toss a racquetball directly upward and then catch it at the same height you released it 1.82 s later. assume air resistance

Anton [14]

Neglecting air resistance, the acceleration of the ball is
the acceleration of gravity ... 9.8 m/s² downward.

It doesn't matter what you toss, what it's mass is, what it weighs,
what color it is, how much it cost, what its shape or size is, how
fast you toss it, in what direction, or how long it's in the air.

Its horizontal acceleration is zero and its vertical acceleration
is 9.8 m/s² downward, from the moment it leaves your hand
until the moment somebody catches it or it hits the ground.

5 0

3 years ago

The circumference of the earth is 40,000 km. The distance from the

Finger [1]

Answer:

The distance from the North Pole to the equator is $1*10^{7}$ m.

Explanation:

Circumference of Earth = 40,000 km ......................(1)

Distance from the North Pole to the Equator is = 1/4th of the Circumference of Earth ...................... (2)

Let Distance from the North Pole to the Equator be d ,

the equation formed will be ,

d = 1/4 * Circumference of Earth ........(3)......... ( from equation 1 )

put the value of Circumference of Earth in equation (3),

d = 1/4 * 40,000 km

d = 10,000 km

converting km to m ,

d = 10,000 * $10^{3}$ m

d = 1 * $10^{7}$ m

The distance from the North Pole to the equator is $1*10^{7}$ m.

7 0

2 years ago