What causes magnetic stripes to form?

Answer:

dang

Explanation:

Answer:

Explanation:

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space. ... This proved that radio waves were a form of light

Answer:

They travel through space

Explanation:

2021 edge

ANSWER:

6500 pounds

STEP-BY-STEP EXPLANATION:

To know the answer, we must first know the equivalence between tons and pounds, since it is the only way they can be added.

We know that 1 ton equals 2000 pounds, therefore:

No, the slowing down of a ball rolling down a bowling alley does not violate Newton's law of inertia.

Newton's law of inertia states that an object at rest will stay at rest and an object in motion will stay in motion with a constant velocity unless acted upon by an external force. In the case of the ball rolling down a bowling alley, the force of friction between the ball and the surface of the alley is acting as an external force, slowing down the ball's velocity over time. This is a common occurrence in many situations where friction is present, and it does not violate the law of inertia. In fact, the slowing down of the ball is evidence that Newton's law of inertia is at work, as the ball would continue rolling at a constant velocity if no external forces were present.

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Answer: 25.1m

Explanation:

The expression of the initial potential energy when the ball is tossed upwards is given as followed

\(PE_{i}\)=mg\(PE_{i}= mgh_{0}\)

Here, m is the mass of the ball, g is the acceleration due to gravity and is the initial height.

The initial kinetic energy of the ball is:

\(KE_{i} =\frac{1}{2}mv^2\)

The final potential energy of the ball at the maximum height is given as:

\(PE_{f}=mgh_{max}\)

The final kinetic energy is at the maximum height is:

\(KE_{f} =0\)

Now you will use the conservation of energy princi\(h_{0}\)ple and substitute the equations into the expression below:

\(KE_{i}+PE_i=KE_f+PE_f\)

\(\frac{1}{2}mv^2+mgh_0=0+mgh_{max}\)

\(h_{max}=h_0+\frac{v^2}{2g}\)

Now substitute 9.81 m/\(s^{2}\) for g, 10m/s for v, and 20.0 m for \(h_{0}\) in the equation above.

h\(_{max}}=(20.0m)+\frac{(10m/s)^2}{2(9.81m/s^2}\)

which is equal to 25.1m

In the southern Hemisphere, objects deflect to the right, whereas In the Northern Hemisphere objects deflect to the left.

The Coriolis force is the name given to the unseen force that seems to reroute the wind. Different speeds of movement are governed by the Coriolis force. It is based on the gravity or rotational speed of the object. The force is parallel to the axis of the object. From west to east, the Earth rotates on its axis.

The path of an object moving vertically and freely at the equator does not curve relative to the Ground atmosphere as there is no sensation of rotation of the Earth's surface underneath it. There is no Eddy currents effect because the object's trajectory is straight.

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Answer:

The correct answer is a. Subsonic

Hope this helps you^_^

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Binary search is the best method for finding common elements between two lists, with a sorted list a of size n and unsorted list b of size m, where n is much smaller than m.

Given a sorted list a of size n and an unsorted list b of size m, where n is much smaller than m, the most efficient strategy to find the common elements of both lists is to use binary search. The best method for finding the common elements of the sorted and unsorted lists is binary search. This is because binary search has a logarithmic time complexity, which is more efficient than linear search, which has a time complexity of O(n).

When binary search is used to compare two lists, it takes O(m log n) time to search for all common elements. This is much faster than using linear search, which would take O(mn) time to compare two lists. Therefore, binary search is the best method for finding common elements between two lists, with a sorted list a of size n and unsorted list b of size m, where n is much smaller than m.

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Answer:

It's a pretty simple suvat linear projectile motion question, using the following equation and plugging in your values it's a pretty trivial calculation.

V^2=U^2+2*a*x

V=0 (as it is at max height)

U=30ms^-1 (initial speed)

a=-g /-9.8ms^-2 (as it is moving against gravity)

x is the variable you want to calculate (height)

0=30^2+2*(-9.8)*x

x=-30^2/2*-9.8

x=45.92m

Answer:

35

Explanation:

dfddffffffffffffdddfr

Answer:

h = 493 m

Explanation:

Given that,

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later.

The total distance covered by the rock is 2d. We know that,

Speed = distance/time

\(v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{340\times 2.9}{2}\\\\d=493\ m\)

So, the height of the cliff is equal to 493 m.

Answer: Gently reduce pressure on brakes – if on ice, push in the clutch to let the wheels turn freely.

Turn the steering wheel quickly – look and steer in the direction you want to go.

Counter-steer – as the vehicle gets back on course, counter-steer to avoid skidding in the opposite direction.

Explanation:

Answer:

the answer is c

Explanation:

Answer:

Explanation:

As an example, ice on steel has a low coefficient of friction – the two materials slide past each other easily – while rubber on pavement has a high coefficient of friction – the materials do not slide past each other easily. The coefficients of friction ranges from near 0 to greater than 1.

The following does not increase as mass increases for main sequence stars is D) Main sequence lifetime. As mass increases, the temperature, radius, and luminosity of main sequence stars all increase.

As mass increases for main sequence stars:
A) Temperature increases because more massive stars have stronger gravitational forces, causing higher pressure and temperature in their cores.
B) Radius increases since more massive stars have larger volumes.
C) Luminosity increases due to the higher temperature and larger surface area, resulting in more energy output.

However, D) Main sequence lifetime does not increase as mass increases. In fact, it decreases because more massive stars consume their nuclear fuel at a faster rate, leading to shorter lifetimes on the main sequence.

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Inheritance is fundamental for reproduction because it means the perpetuity of characteristics.  It is the process by which genetic information is passed on from parents to offspring.

Inheritance refers to the mechanism through which genetic information (DNA) is passed from parents to offspring across generations.

In genetics, inheritance can be used to explain the similar phenotypic traits between parents and offspring.

Reproduction is the process for which new organisms are developed, which requires the inheritance of many characteristics of the parents in offspring.

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The answer is option c - It will divide in half to form two new cells..

Explanation:

The sentence that best describes what happened during cell growth is ;

( D ) It will become larger by taking in nutrients

As the yeast cells begin to grow ( i.e. cell growth ), they will require more nutrients and as they take in the necessary nutrients they will gradually increase in size ( becoming larger ) which is a vital sign of cell growth and development, which will be seen in the yeast cells as they undergo cell growth.

The production of offsprings with a mate does not describe an activity that occurs in cell growth.  

Hence we can conclude that The sentence that best describes what happened during cell growth is, It will become larger by taking in nutrients.

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Our final position will be -5m left from the origin while the initial position was 3m right from the origin.

We are standing at 3.0 m right from the origin and we start walking towards left with a speed of 2.0 m/s.

The position after 4.0 seconds can be found as.

Speed = Displacement/time

Displacement = X, initial position is +3.0 m

Putting all the values,

2 = X/4

X = 8m

X is the magnitude of the displacement.

Displacement  = -8m

Negative sign shows the direction of displacement.

Displacement = final - initial position.

-8m = Final position - 3m

Final position = -5m

So, the final position will be -5m on the left of the origin.

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Answer:

Kepler refined the Copernican model. Orbits are not circles along which planets move at a constant speed, but ellipses, in the central focus of which is the Sun. The planet moves in an ellipse with a variable speed depending on the distance to the Sun. On this basis, Kepler significantly simplified the Copernican model and formulated the laws of planetary motion in their orbits.

Answer:200kg of water

Explanation:

It would take 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

To calculate the time required to crumple the barrier and safely slow down the person, we can use the concept of impulse.

The impulse, denoted by J, is defined as the product of force and time, and it represents the change in momentum of an object. In this case, the impulse required to safely slow down the person can be calculated using the maximum force and the person's initial momentum.

The momentum of a person is given by the product of their mass and velocity:

Momentum = mass × velocity

Given that the person's mass is 68 kg and their velocity is 27 m/s, the initial momentum is:

Initial momentum = 68 kg × 27 m/s

To safely slow down the person, the impulse provided by the barrier should be equal to the change in momentum.

Therefore, we have:

Impulse provided by barrier = Final momentum - Initial momentum

Since the person is brought to rest, the final momentum is zero. Thus, we have:

Impulse provided by barrier = -Initial momentum

Now we can express the impulse in terms of force and time:

Impulse provided by barrier = Force × Time

Plugging in the known values, we can solve for time:

-Initial momentum = Force × Time

68 kg × 27 m/s = 1180 N × Time

Simplifying the equation, we find:

Time = (68 kg × 27 m/s) / 1180 N

Evaluating the expression:

Time = 1836 kg·m/s / 1180 N

Finally, converting kg·m/s to seconds, we get:

Time ≈ 1.5559 seconds

Therefore, it would take approximately 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

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Answer:

Acceleration of one cyclist=\(2.67m/s^2\)

Yes, the acceleration is higher of another cyclist who accelerates from 0 to 30 m/s in 8 seconds.

Explanation:

We are given that

Initial velocity of one cyclist, u=0 m/s

Final velocity of one cyclist, v=8m/s

Time, t=3 s

Initial velocity of another cyclist, u'=0

Final velocity of another cyclist, v'=30m/s

Time, t'=8 s

We know that

Acceleration, \(a=\frac{v-u}{t}\)

Using the formula

\(a=\frac{8-0}{3}=\frac{8}{3}=2.67m/s^2\)

Acceleration of one cyclist=\(2.67m/s^2\)

Acceleration of another cyclist, a'=\(\frac{30-0}{8}m/s^2\)

Acceleration of another cyclist, a'=\(3.75m/s^2\)

Yes, the acceleration of another cyclist is higher than the cyclist which accelerates from 0m/s to 8m/s.

The moment of inertia about the b-b' axis is 24.6E6 mm^4.

To find the moment of inertia of the shaded area about the B-B' axis, we can use the formula I = ∑m*r^2, where m is the mass of each particle in the shaded area, r is the distance of each particle from the B-B' axis, and the sum is taken over all particles in the shaded area.

We are given that the moment of inertia of the shaded area about the A-A' axis is

and that the area of the shaded region is

We are also given the distances

which correspond to the distances of the two particles in the shaded region from the B-B' axis.

The mass of each particle in the shaded region can be calculated by dividing the total mass of the region (which is equal to the product of the area and the density of the material) by the number of particles. Since the density of the material is not given, we cannot calculate the mass of each particle.

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Complete Question:

If the moment of inertia of the shaded area about the A-A' axis is 18E6 mm, what is the moment of inertia about the B-B' axis?

Given: A6E3 mm², ds-50 mm, d₂-10 mm

a. none of these answers

B. 21.2E6 mm^4

C  25.2E6 mm^4

D. 26.3E6 mm^4

E. 24.6E6 mm^4

Answer:

150, 000J

Explanation:

- formula to find potential energy is mgh (mass x 10N/kg x height)

- as 1kg is equal to 10N, 300kg multiply by 10N is 3000N

- hence, 3000N x 50m equals to 150 000J

The temperature of the liquid water is the same as that of the ice by definition of thermal equilibrium.

When two physical systems are linked by a channel permeable to heat, they are said to be in thermal equilibrium if there is no net movement of thermal energy between them. The zeroth law of thermodynamics is observed in thermal equilibrium. Heat is the energy transfer from a high temperature to a low temperature. The system is considered to be in thermal equilibrium when their temperatures are equal, heat no longer flows, and this happens. Additionally, thermal equilibrium indicates that there is no matter entering or leaving the system. When the engine temperature eventually reaches the same level as the air temperature, thermal equilibrium has taken place. After being on the table for a short while, a cup of hot tea cools to the same temperature as its surroundings.

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The persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

Tο determine the speed at which the persοn is mοving, we can use the cοncept οf relative velοcity.

Let's cοnsider the hοrizοntal and vertical cοmpοnents separately:

Hοrizοntal Cοmpοnent:

The persοn is walking due East, which is perpendicular tο the Nοrth directiοn οf the car. Therefοre, the hοrizοntal cοmpοnent οf the persοn's velοcity dοes nοt affect the speed at which the persοn is mοving away frοm the car.

Vertical Cοmpοnent:

The persοn is 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur. This indicates that the persοn's vertical pοsitiοn is changing with time. Since the persοn is mοving in the Sοuth directiοn and the distance is increasing, the persοn's speed can be determined by the rate οf change οf the vertical distance.

Given that the distance is increasing at a rate οf 55 miles per hοur, the persοn's speed in the Sοuth directiοn is 55 miles per hοur.

Therefοre, the persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

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Answer:

Gravitone

Explanation:

In theories of quantum gravity, the graviton is the hypothetical quantum of gravity, an elementary particle that mediates the force of gravity. There is no complete quantum field theory of gravitons due to an outstanding mathematical problem with renormalization in general relativity.

Answer:

velocity shsjshsuud7dudhdudbe

The distance to the star, in parsecs, is 30 pc.

The distance to the star, in light years, can be calculated using the conversion factor of 3.26 light years per parsec. Therefore, the distance to the star in light years is approximately 97.8 light years.

The distance to a star can be determined using its measured parallax angle. Parallax is the apparent shift in the position of an object when viewed from two different points. It is measured in units of arc seconds.

The formula to calculate the distance to a star in parsecs is:

Distance (in pc) = 1 / Parallax (in arc sec)

Given that the measured parallax is 1/30 of an arc second, we can substitute this value into the formula:

Distance (in pc) = 1 / (1/30) = 30 pc

This gives us the distance to the star in parsecs.

To convert the distance to light years, we use the conversion factor of 3.26 light years per parsec. Multiplying the distance in parsecs by this conversion factor gives us the distance in light years:

Distance (in light years) = 30 pc × 3.26 light years/pc = 97.8 light years

Therefore, the distance to the star is approximately 30 parsecs or 97.8 light years.

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