When the Moon is in the position shown, how would the Moon look to an observer on the North Pole?

Suppose that you and two classmates are discussing the design of a roller coaster. One classmate says that each summit must be l

Kitty [74]

Answer:

The second classmate is right.

Explanation:

The height of first summit provides the potential energy it will use to climb the following ones.

Ep = m * g * h

Where

m: mass

g: acceleration of gravity

h: height

When the train goes downwards the potential energy is converted into kinetic energy (manifested as speed) and when it climbs it consumes its kinetical energy. As long as no summit is taller than the first the train should have enough energy to climb them.

Also it must be noted that friction also consumes energy, and if the track is too lomg all the energy might be consumed by it.

8 0

3 years ago

Design a filter that has infinite DC gain, a gain of one from 1Hz to 100 Hz and filters (1storder) any signals above 100 Hz.a) S

EastWind [94]

Answer:

Attached below are the sketches

answer :

c) G(s) = 100 / ( s + 100 )

d) y'(t) + 100Y(s) = 100 X(s)

e) g(t) = e^-100t u(t)

Explanation:

a) Sketch the bode plot

The filter here is a low pass filter

b) Sketch the s-plane

attached below. pole ( s ) is at 100

c) write the transfer function of the filter

Transfer function ; G(s) = 100 / ( s + 100 )

d) write the differential equation

Y(s) / X(s) = 100 / s + 100

Y(s) [ s + 100 ] = 100 X(s)

= sY(s) + 100Y = 100 X(s)

∴ differential equation = y'(t) + 100Y(s) = 100 X(s)

e) write out the unforced transient response

g(t) = e^-100t u(t)

f) write out the frequency response

attached below

4 0

3 years ago

sergejj [24]

Answer:

CDI= 1.393 × 10^-3 mg/kg.d

Explanation:

The solution and complete explanation for the above question and mentioned conditions is given below in the attached document.i hope my explanation will help you in understanding this particular question.

8 0

3 years ago

Which of the following distinguishes the importance of engineering to the field of sports biomechanics?

Lisa [10]

The first one and the second i’m glad to help

8 0

3 years ago

Assuming that a query has a buffer holding up to 3 blocks, and each block can hold two records. Use merge-sort to sort the follo

kipiarov [429]

Answer:

a) 5 runs will be generated.

b) Since the buffer can hold 3 records, the first 3 runs are (1, 10, 11), (1, 5, 90) and (2, 10). Then we need to reserve one block as output buffer, the algorithm can merge two runs at most at the same time. As a result, we can choose to merge the first two runs into a larger one: (1,1,5,10,11,90), which is merged with the run (2, 10) to generate the final output.

Explanation:

5 runs will be generated.

Since the buffer can hold 3 records, the first 3 runs are (1, 10, 11), (1, 5, 90) and (2, 10). Then we need to reserve one block as output buffer, the algorithm can merge two runs at most at the same time. As a result, we can choose to merge the first two runs into a larger one: (1,1,5,10,11,90), which is merged with the run (2, 10) to generate the final output.

5 0

3 years ago