Electtromagneticradiation

Answers

Answer 1

Answer: Electromagnetic Radiation behaves something like a wave and sometimes like a stream of particles.

Answer 2

Answer: Th definition is the energy released by an electromagnetic process.

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In a science museum, a 130 kg brass pendulum bob swings at the end of a 14.4 m -long wire. The pendulum is started at exactly 8:00 a.m. every morning by pulling it 1.7 m to the side and releasing it. Because of its compact shape and smooth surface, the pendulum's damping constant is only 0.010kg/s. You may want to review (Pages 405 - 407) . Part A At exactly 12:00 noon, how many oscillations will the pendulum have completed
Have researchers have now been able to cool substances to absolute zero
Only answer if you know all of themThe connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better?AContrastBFacesCColorsImproving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify:AThe edges of objectsBThe center of objectsCThe color of an objectWhat assumption does our visual system make in order to see curved surfaces (domes, holes)?ALight comes from aboveBCurved surfaces are always evenly litCCurved surfaces are always easy to see, no assumptions are madeWhich part of the face does our brain pay the most attention to?AEyes and mouthBEyes and earsCEyes and chinIf all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them?AIt helps us see things fasterBIt helps us see things correctlyCIt helps us pay attention to what's importantDAll of the above

This is heat or electrical transfer by contact.

Answers

Answer:

The correct answer for this problem is conduction.

Explanation:

I just did the test and conduction was the correct answe.

The velocity acquired by a body moving with uniform acceleration is 12 m/s in 2 s and 18 m/s in 4 s. Find the initial velocity of the body.

Answers

Answer:

6 m/s

Explanation:

At constant acceleration, the final velocity is equal to the initial velocity plus the product of time and acceleration:

v = at + v₀

We know that at t=2, v=12. And at t=4, v=18.

12 = 2a + v₀

18 = 4a + v₀

We can solve the system of equations for v₀. If we double the first equation:

24 = 4a + 2v₀

And subtract the second:

24-18 = 4a-4a + 2v₀ - v₀

6 = v₀

The initial velocity is 6 m/s.

_____________ is an excessive current relative to normal operating current, but one that is confined to the normal conductive path provided by the conductors, circuit components, and loads of the distribution system. A(n) _________ is a current that flows outside the normal conducting path. One generally accepted definition of _______is when a phase or ungrounded conductor comes in contact with, or arcing current flows between, another phase conductor, neutral, or ground.

Answers

Answer:

Overload current, short-circuit current and short circuit

Explanation:

Overload current is an excessive current relative to normal operating current, but one that is confined to the normal conductive path provided by the conductors, circuit components, and loads of the distribution system.

A short-circuit current is a current that flows outside the normal conducting path.

One generally accepted definition of short circuit is when a phase or ungrounded conductor comes in contact with, or arcing current flows between, another phase conductor, neutral, or ground.

A 1,200-watt water heater is plugged into a 120-volt outlet and used for 1.5 hours. How much current runs through the vacuum? 0.10 amps
10 amps
80 amps
180 amps

Answers

Answer: The current of value 10 ampere runs through the vacuum.

Explanation;

Power of the water heater = 1,200 watts

Voltage applied to the water heater = 120 V

Duration of the use of water heater = 1.5 seconds

$Current=(Power)/(Voltage)=(1,200 W)/(120 V)=10 ampere$

The current of value 10 ampere runs through the vacuum.

1200 watts / 120 volts =10 amps begins to flow as soon as you plug it in.

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.

Answers

Answer:

By examining its composition and parts.

Explanation:

A comet is an icy body composed of dust, rock, ice and frozen gases. Comets are commonly found in Kuiper belt and Oort cloud beyond Neptune's orbit. A comet has nucleus, a coma surrounding it and a tail. Comets also orbit the sun in large elliptical paths. Comets from Kuiper belt have smaller period unlike comets from Oort clouds.

A new object would be a comet if it has the same composition and parts.

One way is by using precise calculations in combination with accurately mapping it's position compared to other stars. If it's found to be moving a different way, then it can be proved a comet

an input force of 50 Newtons is applied through a distance of 10 meters to machine with mechanical advantage of 3. If the work output for the machine is 450 newton x meters and this work is applied through a distnace of 3 meters, what is the output force of the machine

Answers

The output of the machine is

(output work) = (output force) x (distance)

450 N-m = (output force) x (3 meters)

Divide each side
by 3 meters: Output force = (450 N-m) / (3 m)

= 150 newtons .

With all the information given about the output work, we don't need
to know anything about the input work, or even the fact that we're
dealing with a machine.

It's comforting, though, to look back and notice that the output work
(450 N-m) is not more than the input work (500 N-m). So everything
is nice and hunky-dory.
___________________________________

Well, my goodness !
I didn't even need to go through all of that.

Given:

-- The input force to the machine is 50 newtons.

-- The mechanical advantage of the machine is 3 .

That right there tells us that

-- The output force of the machine is 150 newtons.

We don't need any of the other given information.

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How long does it take the moon to go from full-moon phase to new-moon phase

What is the fundamental frequency of a particular medium?. a.the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible

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