The apparent weight of a passenger in an elevator is greater than his true weight. Which one of the following is TRUE?a)The elevator is moving at a constant speed downward.b)The elevator is speeding as it moves upward.c)The elevator is moving at a constant speed upward.d)The elevator is slowing down as it moves upward.

The sequence that correctly lists earthquake waves from strongest to weakest is : ( C ) P waves -- S waves-- Surface waves

P waves are the strongest waves because they move more rapidly inside the incompressible earth core sending its energy at a hazardous rate, while the S waves are slower and produces vertical movement of the earth surface.

The weakest waves are the S waves which sweeps across the outer surface of the earth and they are also the slowest of all the waves.

Hence we can conclude that the sequence that correctly lists earthquake waves from strongest to weakest is P waves -- S waves-- Surface waves

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In order to answer the question of where the arrows of the magnetic domains point, one must consider the properties of the magnets' poles: A) The arrows line up and point upward.

Iron or cobalt is a common component of permanent magnets. An alloy composed of aluminum is called alnico. Involves a systematic process minerals are capable of making powerful electromagnets. They are widely utilized in industrial and consumer electronics applications.

The word "lithos magnes" from classical Greek is where the name first appeared. According to Pliny's explanation in his "Naturalis Historia," the term is derived from the myth of the Greek shepherd Magnes on Mount Ida, whose iron staff and the nails in his shoes were drawn to the magnetite stones.

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Answer:

POINTS LEFT

Explanation:

just did it

Answer:

The tissue that holds bones together at movable joints is ligaments. Ligaments are strong, fibrous connective tissues that connect bones to other bones, providing stability and limiting excessive movement at the joints. They help to maintain the proper alignment and function of the joints while allowing for controlled movement.

Explanation:

The tissue that holds bones together at movable joints is ligaments. Ligaments are strong, fibrous connective tissues that connect bones to other bones, providing stability and limiting excessive movement at the joints. They help to maintain the proper alignment and function of the joints while allowing for controlled movement.

Answer:

The answer is ligaments!

Explanation:

Hope this helps!! :)

The two strings are taut. When the system is released from rest, it accelerates at 2 m/s2 then, Mass of A = 8m/5 kg.

Let the mass of the body A be ‘m’.

The two strings are taut so they exert a tension ‘T’ on body A.

Let ‘a’ be the acceleration produced in the system.

The free body diagram of body A is given below: mA + 2T = mA + ma = mA + m(2)mA + 10T = mA + ma = mA + m(2)

As the two strings are taut, we can say that tension in both strings is equal.

Therefore 2T = 10T or T = 5T As the body A is resting on a smooth horizontal table, there is no friction force acting on the body A.

The net force acting on body A is the force due to tension in the strings. ma = 2T – mg …(1)

As per the given problem, the system is released from rest.

Hence the initial velocity is zero.

Also, we are given that the system accelerates at 2 m/s2.

Therefore a = 2 m/s2 …(2)

From the equations (1) and (2), we get, m(2) = 2T – mg …(3)⇒ m(2) = 2×5m – mg⇒ 2m = 10m – g⇒ g = 8m/5

Thus, the mass of A is 8m/5 kg.

Answer: Mass of A = 8m/5 kg.

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Answer:

Initial height

Answer:

A: the hardness of the sidewalk where the mug landed

Explanation:

did the quick check

Answer:

A light emitting diode (a semiconductor diode which glows when voltage is applied.

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{475}{1900} = 0.25 \\ \)

We have the final answer as

Hope this helps you

For a 208-volt, 4-wire, 3-phase wye power system feeds a school building, the average daily voltage is mathematically given as

x=206.23v

Generally, the equation for the mean  is mathematically given as

x=total sum/ number

Therefore

ts=05.25 volts, 203.75 volts, 208 volts, 204.35 volts, 206.7 volts, 207 volts, and 208.55 volts.

ts=1433.6

In conclusion

x=1433.6/7

x=206.23v

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Answer:

Ratio of distance to displacement is pi/2

Explanation:

Pls see attached file for diagram and explanation

Answer:

The color of the Anthocyanins changes depending on the PH of what they come into contact with, because wine already has acid in its Anthocyanins are red. But as soon as you expose those Anthocyanins to more alkaline factors, it will start to turn blue.

Answer:

Yes the answer is A.)  A Nucleus

Explanation:

I took the test

Rutherford’s model of the atom included a nucleus  that Thomson’s model did not have, therefore the correct option is A

There are some models that are used to explain the arrangements of subatomic particles inside the atom based on the atomic theory of atom are known as the atomic models.

There are many types of atomic models proposed in past based on their individual assumptions and the experimentations

There are mainly five most widely accepted atomic models

John Dalton's atomic model which based on the assumption that all the entities of the universe are made up of the fundamental particle that is an atom.

J.J. Thomson's model: Plum Pudding model explains the arrangement of subatomic particles by taking the example of plum pudding in which positive charge is distributed uniformly throughout and the negative charge particles are sprinkled on it in a random fashion.

Rutherford's model explained the existence of a nucleus inside the atom by using the alpha particle bombardment experiment on a thin sheet of gold.

Niels Bohr's model explained the revolving nature of the electrons in the different shells around the nucleus of the atom.

Erwin Schrodinger's model explains the arrangement of the subatomic particles as the electron Cloud Model also known as the Quantum Model.

Rutherford’s model of the atom included a nucleus  that Thomson’s model did not have, therefore the correct option is A

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The spring constant of the spring is determined as 2,647.7 N/m.

The spring constant of the spring is calculated by applying the following equation.

¹/₂mv² = ¹/₂kx²

mv² = kx²

k = mv² / x²

where;

F = kx

ma = kx

k = ma / x

where;

ma / x = mv² / x²

a / x = v² / x²

ax = v²

x = v² / a

The spring constant of the spring is calculated as;

k = ma / x

k = (ma / v² / a)

k = ( ma² / v² )

k = (1200 x 39.2²) / (26.39²)

k = 2,647.7 N/m

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These fish have food. Yellowtail snapper, algae, stoplight parrotfish, shrimp, crabs, and worms Sponges, the queen angelfish Grouper from Nassau: Various fish.

All parrotfish species on coral reefs have the critical duty of preventing algae from outpacing reef-building corals. Wake Atoll's reef environment is kept healthy and diverse by bumphead parrotfish (Photo by Andrew E. Gray/NOAA Fisheries).

Up to 90% of the time, parrotfish graze on the corals' overgrowth of algae, which helps to keep the ecological balance between the two groups of species in good shape.

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Answer:

gh

Explanation:

Answer:

10.2 % efficiency.

Explanation:

Percent efficiency formula: (output / input) * 100%

The output energy (in Joules) is how much was used eventually. - It is 10 J

The input energy (in Joules) is how much energy was put into the lightbulb initially. It is 98 J

(10 J / 98 J) * 100% = 10.2 % efficiency.

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

The magnitude of the resultant vector, representing the actual path of the boat, is approximately 1.42 m/s.

To find the magnitude of the resultant vector, we need to consider the boat's velocity and the velocity of the river. The boat's velocity is given as 0.75 m/s, and the river's velocity is given as 1.2 m/s.

Since the boat is moving in a river, we can think of the boat's velocity as a combination of two velocities: its own velocity and the velocity of the river. The resultant vector represents the actual path of the boat, considering both velocities.

To calculate the resultant vector, we can use vector addition. The magnitude of the resultant vector can be found by taking the square root of the sum of the squares of the boat's velocity and the river's velocity. Mathematically, we have:

Resultant magnitude = √(boat velocity^2 + river velocity^2)

Plugging in the given values, we have:

Resultant magnitude = √(0.75^2 + 1.2^2)

= √(0.5625 + 1.44)

= √2.0025

≈ 1.42 m/s

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Before we begin, we will establish that the north direction is the positive direction which means that the south direction is negative.

A.

The momentum of an object is given by:

For the truck we know that the velocity is -20 m/s (since it is traveling south) and its mass is 4000 kg, then its momentum is:

Therefore, the momentum of the truck is -80000 kg m/s; this means that its magnitude is 80000 kg m/s and its direction is south.

For the car we know that the velocity is 10 m/s and its mass is 1320 kg, then its momentum is:

Therefore, the momentum of the car is 13200 kg m/s which means that its magnitude is 13200 kg m/s and its direction is north.

B.

In a collision the momentum is conserved, that is, the total initial and final momentum is equal, that is:

In this case, we know that the vehicles stick together after they collide, then we have:

where u is the velocity of the vehicles after they collide. Plugging the values we know, we have that:

Therefore, the final velocity of the system is -12.56 m/s which means that the magnitude of the velocity is 12.56 m/s and its direction is south.

The sequence "MSKAALTGLLFV" appears to be a protein sequence rather than a DNA sequence. Proteins are formed by linking amino acids together in a specific sequence, and the sequence you provided represents a short section of a protein.

To determine the corresponding DNA sequence, we would need to know the genetic code, which relates the three-letter codons of DNA to specific amino acids. Without that information, we cannot directly derive the DNA sequence from the protein sequence you provided.

Additionally, based solely on the protein sequence "MSKAALTGLLFV," it is challenging to determine the specific function or characteristics of the protein without further information. Proteins have various functions in living organisms, including structural support, enzymatic activity, transport, signaling, and many others.

To understand the function of a protein, it is essential to have more comprehensive information about its structure, cellular location, and any known functional domains or motifs it may contain.

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Answer:

-259322.03N

Explanation:

\(F=m*(\frac{v}{t})\\ F=4500kg*(\frac{0-102m/s}{1.77s} )\\F=-259322.033898\\\\\)

Answer:

the same question I want to know

a. Spheres A and B carry the same charge \(\rm \( Q \)\), the force can be written as:

\(\rm \[ F = \frac{k Q^2}{R^2} \]\), b. The net force on sphere A now is the force due to sphere B, which is: \(\rm \[ F = \frac{k \frac{Q}{2} \cdot Q}{R^2} = \frac{k Q^2}{2R^2} \]\), c. The magnitude of the force on sphere A in this third case is \(\rm \( \frac{3}{8} \)\) of the original force.

a) The magnitude of the force (F) sphere B exerts on sphere A can be calculated using Coulomb's law:

\(\rm \[ F = \frac{k Q_1 Q_2}{R^2} \]\)

where:

k is Coulomb's constant \(\rm \( k = \frac{1}{4\pi\epsilon_0} \)\) where \(\rm \( \epsilon_0 \)\) is the vacuum permittivity constant),

\(\rm \( Q_1 \)\) and \(\rm \( Q_2 \)\) are the charges on spheres A and B respectively, and

\(\rm \( R \)\) is the distance between the two spheres.

Since both spheres A and B carry the same charge \(\rm \( Q \)\), the force can be written as:

\(\rm \[ F = \frac{k Q^2}{R^2} \]\)

b) When an identical sphere C makes contact with sphere B, they share the charge equally. Sphere B now carries \(\rm \( \frac{Q}{2} \)\) charge, and sphere C carries \(\rm \( \frac{Q}{2} \)\) charge.

When sphere C is moved far away, it exerts no force on sphere A. So, the net force on sphere A now is the force due to sphere B, which is:

\(\rm \[ F = \frac{k \frac{Q}{2} \cdot Q}{R^2} = \frac{k Q^2}{2R^2} \]\)

c) When sphere C makes contact with sphere A, they both share the charge equally. Each sphere now carries \(\rm \( \frac{Q}{2} \)\) charge.

When sphere C is moved far away, the net force on sphere A now is the force due to the charge on sphere A itself, which is:

\(\rm \[ F = \frac{k \frac{Q}{2} \cdot \frac{Q}{2}}{R^2} \\\\\rm = \frac{3}{8} \frac{k Q^2}{R^2} \]\)

So, the magnitude of the force on sphere A in this third case is \(\rm \( \frac{3}{8} \)\) of the original force.

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The work done in this situation can be expressed as: Work = (F cosθ) x s.

Work is an activity or task done in exchange for money or other forms of compensation. It is usually done in an organized environment such as an office, factory, or store. Work can also be voluntary or unpaid, such as caring for a family member, volunteering in a community, or pursuing a hobby.

The work done in this situation can be expressed as the product of the magnitude of the force and the displacement in the direction of the force. Since the force is in the same direction as the displacement, the work done can be expressed as:

Work = F x s

Where F is the magnitude of the force and s is the displacement in the direction of the force.

Therefore, the work done in this situation can be expressed as:

Work = (F cosθ) x s

Where F is the magnitude of the force, s is the displacement in the direction of the force, and θ is the angle between the force and the displacement.

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Answer:

equator

Explanation:

in south & north pole you could have 20+ hours daylight or night, everyday!

Explanation:

where I is the current, L is the length of the wire, and B is the magnetic field.

If we point our right-hand thumb in the direction of the current (to the right), and our fingers in the direction of the magnetic field (away from us), then our palm will point in the direction of the force.

Answer:

2 hour

Explanation:

car will cover 80km in 1 hr

odometer's reading increases 160 km

so 80km = 1hr

then, 160km =1/80×160

=2 hr

Answer:

120 mins

Explanation:

delta X = 860 - 700      V = 80km/hour

t= delta x/ v= (860-700)/80= 2hours

2 hours = 120 mins

Given :

Three charges :

\(q_1=-1.95\ nC\\\\q_2=3.60\ nC\\\\q_3=4.90\ nC\)

There location on y-axis :

\(y_1=-0.550\ m\\\\y_2=0\ m\\\\y_3=-0.435\ m\)

To Find :

Total force acting on \(q_3\) .

Solution :

Total force acting on \(q_3\) is :

\(F_3=\dfrac{kq_1}{r_1^2}+\dfrac{kq_2}{r_2^2}\\\\F_3=k[(\dfrac{1.95\times 10^{-9}}{0.550-0.435})+(\dfrac{3.6\times 10^{-9}}{0.550-0})]\\\\F_3=9.0 \times 10^9 \times [(\dfrac{1.95\times 10^{-9}}{0.550-0.435})+(\dfrac{3.6\times 10^{-9}}{0.550-0})]\\\\F_3=211.52\ N\)

Therefore , force applied on \(q_3\) is 211.52 N .

Answer:

A

Explanation:

electric force

The electrostatic force between the moon and the planet can be neglected. Hence, option (A) is correct.

The given problem is based on the comparison between the gravitational force and electrostatic force. Consider the two bodies as moon and a planet such that the force exerted between the moon and the planet is given as,

\(F_{g}=\dfrac{G\times M \times m}{r^{2}}\) ..................................................(1)

Here, G is the gravitational constant, M is the mass of moon, m is the mass of planet and r is the distance between the moon and the planet.

And the electrostatic force is the force between the two charged entities on moon and the planet. So, it is given as,

\(F_{e}=\dfrac{k \times Q \times q}{r^{2}}\) ....................................................(2)

Here, k is the Coulomb's constant, Q is the charge entity at moon and q is the charged entity on planet.

The forces obtained in equation (1) and (2) depends on the masses and charges, which clearly signifies that the masses have more numerical value than charges, hence the electrostatic force will leave much lesser influence than gravitational force. So, it can be neglected.

Thus, we conclude that the electrostatic force between the moon and the planet can be neglected. Hence, option (A) is correct.

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