In a motor dozens or hundreds of wire loops wrapped around a ferromagnetic core is called

Answers

Answer 1

Answer: I believe the word you are looking for is called an armature.

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What would you expect to happen to the acceleration if all friction were removed from the ramp, making the net force even higher than 600 N?

Answers

Answer:

if the friction was removed from the ramp, the acceleration would drasticly increase, making it hard to stop.

Explanation:

What are the three parts of a nucleotide

Answers

The building blocks of nucleic acids, nucleotides are composed of a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and at least one phosphate group.

Answer: an organic base, a phosphate group, and a sugar

Explanation:

You take a trip to a star located 1,000 light-years away and return. you travel at an average speed of 0.99c. hint: the time dilation formula is: t′=t1−(vc)2−−−−−−−−√. about how many years will pass on earth while you are gone?

Answers

Answer: 70712.44 ly

Using the following time dilation formula:

$t = \frac {t_o} {\sqrt{1- \frac {v^2}{c^2}}}$

where $t_o$ is the time measured in the moving frame, $v$ is the speed of the moving frame, $c$ is the speed of light and $t$ is time measured in other frame.

Inserting the values:

$t = \frac {1000 ly} {\sqrt{1- \frac {(0.99c)^2}{c^2}}}\n \Rightarrow t=\frac {1000 ly} {√(1-(0.99)^2)} \n \Rightarrow t=(1000ly)/(0.0141)=70712.44 ly$

Therefore, when a trip to a star 1000 ly years away is made with speed 0.99 c, 70712.44 ly would have passed on Earth.

Final answer:

Approximately 999 years will pass on Earth while you are gone.

Explanation:

The formula for time dilation is t′ = t1 - (vc)2 / c.
To calculate how many years will pass on Earth while you are on this trip, we need to determine the time experienced by the astronaut and then use the time dilation formula.
According to the information provided, the astronaut travels at an average speed of 0.99c, so v = 0.99c. The star is located 1,000 light-years away, so t1 = 1,000 years.
Plugging these values into the time dilation formula, we get:

t′ = 1,000 years - (0.99c)2 / c = 1,000 years - 0.9801 years = 999.0199 years.

Therefore, approximately 999 years will pass on Earth while you are gone.

Learn more about Time dilation here:

brainly.com/question/1933572

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Alvin and Theodore race across a parkinglot 360 cm long. Alvin travels at 22.03 cm/s
and Theodore at 17 cm/s.
When the Alvin crosses the finish line, how
far behind is Theodore?
Answer in units of cm.

Answers

Theodore will cross 82.2 cm behind Alvin

A 15 kg box is sliding down an incline of 35 degrees. The incline has a coefficient of friction of 0.25. If the box starts at rest, how fast is it moving after it travels 3 meters?

Answers

The box has 3 forces acting on it:

• its own weight (magnitude w, pointing downward)

• the normal force of the incline on the box (mag. n, pointing upward perpendicular to the incline)

• friction (mag. f, opposing the box's slide down the incline and parallel to the incline)

Decompose each force into components acting parallel or perpendicular to the incline. (Consult the attached free body diagram.) The normal and friction forces are ready to be used, so that just leaves the weight. If we take the direction in which the box is sliding to be the positive parallel direction, then by Newton's second law, we have

• net parallel force:

∑ F = -f + w sin(35°) = m a

• net perpendicular force:

∑ F = n - w cos(35°) = 0

Solve the net perpendicular force equation for the normal force:

n = w cos(35°)

n = (15 kg) (9.8 m/s²) cos(35°)

n ≈ 120 N

Solve for the mag. of friction:

f = µn

f = 0.25 (120 N)

f ≈ 30 N

Solve the net parallel force equation for the acceleration:

-30 N + (15 kg) (9.8 m/s²) sin(35°) = (15 kg) a

a ≈ (54.3157 N) / (15 kg)

a ≈ 3.6 m/s²

Now solve for the block's speed v given that it starts at rest, with v₀ = 0, and slides down the incline a distance of ∆x = 3 m:

v² - v₀² = 2 a ∆x

v² = 2 (3.6 m/s²) (3 m)

v = √(21.7263 m²/s²)

v ≈ 4.7 m/s

Without an unbalanced force, a moving object will not only keep moving, but its speed and direction will also remain the same. True
False

Answers

This is true. Because there is no other force that is causing a change in direction and speed. Remember Newton's First Law of motion. An object in motion will continue in motion and an object at rest will be at rest UNLESS an unbalanced force acts on the object.

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