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3 years ago

How do low energy electromagnetic waves compare with high energy electromagnetic waves? Select all

Physics

1 answer:

Dennis_Churaev [7]3 years ago

3 0

Answer:

Explanation:

The different types of radiation are defined by the the amount of energy found in the photons. Radio waves have photons with low energies, microwave photons have a little more energy than radio waves, infrared photons have still more, then visible, ultraviolet, X-rays, and, the most energetic of all, gamma-rays

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A 3kg ball moving at 8 m/s strikes a 2kg ball at rest,if the collision is elastic,what is the speed of the lighter ball if the h

zloy xaker [14]

Answer:

Speed of lighter ball is 4 m/s.

Explanation:

Applying the principle of conservation of linear momentum,

momentum before collision = momentum after collision.

$m_{1}$ $u_{1}$ + $m_{2}$ $u_{2}$ = $m_{1}$ $v_{1}$ - $m_{2}$ $v_{2}$

$m_{1}$ = 3 kg, $u_{1}$ = 8 m/s, $m_{2}$ = 2 kg, $u_{2}$ = 0 m/s ( since it is at rest), $v_{1}$ = 2 m/s, $v_{2}$ = ?

(3 x 8) + (2 x 0) = (8 x 2) - (2 x $v_{2}$ )

24 + 0 = 16 - 2 $v_{2}$

2 $v_{2}$ = 16 - 24

2 $v_{2}$ = -8

$v_{2}$ = $\frac{-8}{2}$

= -4 m/s

This implies that the light ball moves at the speed of 4 m/s in the opposite direction of the heavier ball after collision.

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3 years ago

If the mass of an object is 14 lbm, what is its weight, in lbf, at a location where g = 32.0 ft/s2?

mixas84 [53]

Using the formula:

w = m x g ....... eq1

here w is weight of the object.

m is mass of the object, and

g is the acceleration of gravity.

mass, m = 14 lbm (given)

acceleration of gravity, g= 32.0 ft/ $s^{2}$

Now, substituting the values in equation (1):

w = 14lbm x 32.0 ft/ $s^{2}$ = 448 lbm ft/ $s^{2}$

since, 1 lbf = 32.174 lbm ft/ $s^{2}$

so, w = 448 x $\frac{1}{32.174}$

w = 13.924lbf

Hence, the mass of an object is 13.924 lbf.

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2 years ago

Difference between boiling point and freezing point

lisov135 [29]

Laurie the vapor pressure of a substance has an advice effect and boiling point the boiling point goes up of pressure as the temperature at which the short salad in it with the liquid at the freezing point the rate at which the solid months is equal to the rate at which the liquid freezers

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3 years ago

Through which medium would sound travel the fastest, water, a steel bar, or nitrogen gas explain

777dan777 [17]

It would travel faster through a steel bar, because sound waves travel by vibrating molecules in a medium. In solids, these molecules are spaced closer together, causing sound to travel faster through it. so that means the second fastest medium is liquid and the slowest is gas

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3 years ago

In the skeletal system, these structures are responsible for connecting bones.

artcher [175]

The answer for the structures that are responsible for connecting bones is B

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