For long-distance transmission of power, in order to reduce losses in the wires by driving a low current at high voltage, we shoulda) use a step-up transformer

b) change the length of the wires between transmission towers

c) not use a transformer at all

d) change the type of conducting material

e) use a step down transformer

Answers

Answer 1

Answer:

ans d) change the type of conducting matey

Answer 2

Answer:

For long-distance transmission of power, in order to reduce losses in the wires by driving a low current at high voltage, we should use a step-up transformer (a) .

(That's at the beginning, to step-up the voltage for long-distance transmission. And then use a step-down transformer at the end, to reduce the voltage just before we pour it into the customer's house.)

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A bicyclist in the Tour de France crests a mountain pass as he moves at 15 km/h. At the bottom, 4.2 km farther, his speed is 65 km/h. Estimate his average acceleration while riding down the mountain.

Answers

18 km/hr*1000m/km*1 hr/3600 sec= 5 m/sec

85 km/hr= 23.6 m/s

distance = 4000m

distance= initial distance+initial velocity*time+ 1/2 acceleration*time^2

initial distance=0

4000= 5.0*t+ 1/2 (accel)(time)^2

Velocity=initial velocity+ acceleration * time

23.6 m/s= 5.0 m/s+ acceleration * time

We now have two equations and two unknowns. Solve them and you have your answer.

This scientist focused his study on planetary motion. One of his laws is the planets orbit the Sun in elliptical patterns.Hubble
Kepler
Newton
Copernicus

Answers

You may be familiar with something denoted as Kepler's Laws of Planetary Motion. Though Copernicus argued that the Earth revolved around the sun, against widely accepted knowledge at the time, I believe you are looking for Kepler.

B.) Kepler is the answer, it's correct

Explain how changes in weather are caused by the interaction of air masses

Answers

When the lower air pressure gets colds it turns to be cold weather turns in to the high pressure like wise it would be changing of high pressure gets change in to the low pressure of it.So that there will be huge storm has been occurred and it will cause a rain.

A rectangular in-ground pool is 45 feet long, 15.5 feet wide and 5.5 feet deep. How many cubic feet of water does the pool hold?

Answers

Answer: 3836.25 cubic ft.

Explanation: Simply find the volume of the pool. In this case it's a rectangular prism so we use the volume equation for a rectangular prism:

1) Volume = length x width x height

2) Volume = 45 ft x 15.5 ft x 5.5 ft

3) 3836.25 cubic ft.

The highest point of a wave is called thea. height.
b. trough.
c. crest.
d. wavelength

Answers

The highest point of a wave is called the "crest." A wave is a disturbance that travels through a medium or space, transferring energy without transporting matter. Therefore, the correct answer is option c.

As a wave propagates, it undergoes cycles of oscillation with alternating high and low points. The highest point of a wave, where the displacement or amplitude is at its maximum, is referred to as the "crest." On the other hand, the term "trough" refers to the lowest point of a wave, where the displacement or amplitude is at its minimum in the negative direction. The trough is the opposite of the crest, representing the bottommost part of a wave.

Learn more about Crest here.

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the answer is c , crest

Light enters water from air at an angle of 25° with the normal, Θ1. If water has an index of refraction of 1.33, determine Θ2.A) 18.5°
B) 34.2°
C) 31.8°
D) 71.5°

Answers

By Snell's law:

η = sini / sinr. i = 25, η = 1.33

1.33 = sin25° / sinr

sinr = sin25° / 1.33 = 0.4226/1.33 = 0.3177 Use a calculator.

r = sin⁻¹(0.3177)

r ≈ 18.52°

Option A.

God's grace.

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