What is the magnetic field strength is a 45000 kgaircraft is accelerated to 260 kg/hr

Answers

Answer 1

Answer: lets calculate the kinetic energy:

ek = (1/2)*45000*(260*1000/3600)^2 = 117.36 x 10^6 J

from the definition of magnetic force we have:
F = Bqv
where F is the force, B is the magnetic field, q is the charge of the body, v i s velocity of the body.

The aircraft is going through a circular motion with radius equal to the radius of the earth plus the aircraft altitude, lets call all that radious r, therefore the aircraft feels a centripetal force:

F = mv^2/r

hence we can equal the magnetic and centripetal force:

Bqv = mv^2/r

we can solve for the magnetic field:

B = mv/rq

hence the intensity of the strength of the magnetic field is expressed in terms of the amount of charge q contained in the aircraft and the total radius of the circular motion.

B = (45000)(260*1000/3600)/rq

B = (1/rq) * (3.25 x 10^6) Teslas

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Answers

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A pre-trip inspection will help you ____________.A. find problems that could cause a collision or breakdown
B. avoid a post-trip inspection
C. know how far you must travel
D. save money on fuel

Answers

Answer:

A. find problems that could cause a collision or breakdown

Explanation:

A pretrip inspection allows the driver to drive safely because he feels satisfied since he already had checked each and everything in the beginning. This increases the focus on driving. In addition to it there are less chances of happenings and technical faults in the vehicle. It also plays a vital role in the safety circumstances as well.

Answer
A.To find problems that could cause a collision or breakdown.

Explanation
A pre-trip inspection is the trip made by the organizers before the due date of the trip.
There are many reasons why pre-trip inspection is necessary. Some of them include:
1. Finding out how much information is available,
2. The cost to be incurred,
3. Assessing the route and the safety of the place,
4. The most important been to help in preparation of the budget and many others
From the choices given, the most appropriate answer is A. To find problems that could cause a collision or breakdown.

a stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge

Answers

The height of a falling object, h, in terms of the seconds passed, t, is
h = 0.5(-9.8t^2) + v_0t + h_0
0 = -4.9(8)^2 + 0 + h_0
h_0 = 64 * 4.9
= 313.6 meters

Here's a formula that tells the distance covered by an
accelerating object starting from rest. The formula is
very useful, and it's simple enough to memorize:

   Distance = (1/2) (acceleration) (time squared) .

If the object is falling, then the acceleration is gravity, 9.8 m/s²,
and the distance is

   (4.9) (time²) .

In this question,

   D = (4.9) (8²)

   = (4.9 x 64) = 313.6 meters.

Coupla comments:

-- This calculation ignores air resistance.
    We kind of ALWAYS do that, otherwise
    the calculation would be very complicated,
and would need a lot of other numbers
    that we don't know, like the size and shape
    of the falling object, and the density of the air.

-- This is a very big building ... about 1,029 feet.
   In New York City, the Chrysler building and
   the New York Times building are both only
   15 feet taller than that.

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b. Refraction
c. Resonance
d. Diffraction

Answers

Resonance is the answer. Resonance frequency is the term used when an object begins to vibrate at an perferred frequency.

The bending of wave crests as the reach shallow water is:

Answers

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c. the original frequency of the source
d. the motion of the source or observer

Answers

d. the motion of the source or observer

I believe the answer is D, im not 100% sure though.

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