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Alex Ar [27]
3 years ago
8

In real machines,efficiency is always

Physics
2 answers:
Monica [59]3 years ago
6 0
<span>In real machines, efficiency is always less than 1 .</span>
alukav5142 [94]3 years ago
4 0
Less than 100% Because from the moment it is built it begins to break down.
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A conductor carrying 14.7 amps of current is directed along the positive x-axis and perpendicular to a uniform magnetic field. A
Gnoma [55]

Explanation:

It is given that,

Current carried in the conductor, I = 14.7 A (+x axis)

The magnetic force per unit length on the conductor, \dfrac{F}{L}=0.125\ N/m (-y axis)

The magnetic force is given by :

F=ILBsin\theta

\theta=90

F=ILB

B=\dfrac{F}{IL}

B=\dfrac{0.125}{14.7}  

B = 0.0085 T

According to right hand rule, the direction of magnetic force can be calculated. So, the direction of magnetic field is along +z axis. Hence, this is the required solution.

4 0
3 years ago
8. The fact that voltage can be created by exerting force on a crystal is used in which type of sensor?
AfilCa [17]

Option C

The fact that voltage can be created by exerting force on a crystal is used in Knock sensor

<u>Explanation:</u>

Any knock to an engine exhibits as a little shake that is distinguished by the knock sensor. This sensor acts by altering the fluctuation to an electrical sign, which is later transferred to the processor mastering the ignition system.

There the variation in quake to the voltage sign modifies the timing improvements on the kindling. The knock sensor is placed on the engine base, cylinder cap or consumption manifold. This is because its purpose is to sense fluctuations affected by engine knock or explosion.

5 0
3 years ago
4. T or F X-rays, ultraviolet light, and gamma rays all can travel through interplanetary space, so they are examples of waves.
Anna [14]

4. The X-rays, ultraviolet light, and gamma rays all can travel through interplanetary space, so they are examples of waves is a False.

5. The amplitude of water waves as you get farther from the disturbance that caused them decreases.

<h3>What is electromagnetic spectrum?</h3>

The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves, visible light waves, ultraviolet rays and microwaves.

They possess high energy even to penetrate deep within the material. The electromagnetic spectrum has longer wavelength and less frequency.

4. The Earth's environment is thick an adequate number of that for all intents and purposes no X-beams can come through from space the entire way to the Earth's surface. This is great as far as we're concerned yet in addition terrible for stargazing. We need to put X-beam telescopes and identifiers on satellites.

Thus, X-rays, ultraviolet light, and gamma rays all can travel through interplanetary space, so they are examples of wave is a False statement.

5. The amplitude of the wave decreases as the time period increases. But when we get far from the disturbance, the amplitude increases.

Thus, the amplitude of water wave increases as we get farther from the disturbance.

Learn more about electromagnetic spectrum.

brainly.com/question/23727978

#SPJ1

3 0
3 years ago
A football wide receiver runs out from the line of scrimmage, turns around and runs 2 meters back toward the quarterback. Compar
nexus9112 [7]

Answer:

See below

Explanation:

TOTAL distance = x meters   (not given how far he ran from scrimmage line)

Displacement =  x - 2   meters     ( although football uses yards not meters)

3 0
2 years ago
Vector A⃗ points in the positive y direction and has a magnitude of 12 m. Vector B⃗ has a magnitude of 33 m and points in the ne
Sergio [31]

direction is neg x

mag is 21m

5 0
3 years ago
Read 2 more answers
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