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Answer:

I should be active for 15 hours to meet the physical activity requirement.

Explanation:

Since time dilates in moving objects, we use the formula t = t₀/√(1 - β²) where t = time in space vehicle, t₀ = time on earth = 9 hours and β = v/c where v = speed of space vehicle = 0.8c.

So, t = t₀/√(1 - β²)

t = 9/√(1 - (v/c)²)

= 9/√(1 - (0.8c/c)²)

= 9/√(1 - (0.8)²)

= 9/√(1 - (0.64)

= 9/√0.36

= 9/0.6

= 15 hr

So, according to a timer on the space vehicle, I should be active for 15 hours to meet the physical activity requirement.

Binding energy per nucleon of carbon 12 is 7.94 MeV

Carbon 12 contains 6 proton , 6 neutron  and 6 electron hence, calculated atomic mass of carbon 12

= 6Mp+6Mn +6Me

=6 × 1.007 + 6 ×1.008 + 6× 0.00055

=12.102

∴ mass defect = 12.102 -12.000 = 0.102 amu

binding energy = 0.102 ×931 = 95.30 MeV

binding energy per nucleon = 95.30\12 = 7.94 MeV

What is the binding energy for each nucleon?

The least amount of energy necessary to separate or break down an atom’s nucleus into the subatomic particles that make it up is known as nuclear binding energy (which are protons and neutrons)

How is nuclear binding energy determined?

The nuclear binding energy can be determined once the mass defect is known by converting that mass to energy using the formula. E b = ( Δ m ) c 2. ...

Verify that the mass is expressed in kilogram's (kg).

Once the obtained energy is known, it can be scaled into amounts per nucleon and per mole.

What does it signify when a nucleon's binding energy is high?

Binding energy is required to keep nucleons together as a nucleus. One of the most stable elements is iron, which has a mass number of 56. We refer to iron as having a high nucleon-binding energy. Less stable elements are those with a lower and higher mass number per nucleon.

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Answer:

Explanation:

v=u+at

30=0+a×12

30=12a

a=\(\frac{30}{12}\)

a=2.5ms⁻²

Answer: hello your question is poorly written attached below is the well written question

answer: 4.9 * 10^-5 T

Explanation:

Current ( i ) = 39.30 A

Determine the magnitude of the B-field at Point P

Mag of B-field at Point P = μo*I / 2π*r --- ( 1 )

where : I = 39.30 , μo = 4π * 10^-7 , r = 8*10^(-2)

Input values into equation 1

( 10^-7 * 39.30 ) / ( 8*10^-2 )

∴ Mag of B-field = 4.9 * 10^-5 T

The tension in an ideal cord in equilibrium is always the same at every location along the cord. This statement is True.

In an ideal cord or string in equilibrium, the tension is constant at every location along the cord. This principle is known as the tension invariance or the tension equality principle. According to this principle, if a cord is at rest or in equilibrium, the tension acting on the cord is uniform throughout its length. This means that the magnitude of the tension remains the same, regardless of the position or location along the cord. The tension is transmitted uniformly through the cord, allowing it to maintain stability and balance.

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Answer:

All 3 cards are completely different

The undamped horizontal spring oscillator has an amplitude of 1.61 m when passing through its equilibrium position during oscillation.

It is given to us that -

Mass of the undamped spring oscillator, m = 2.52 kg

Spring constant during oscillation, k = 21.6 n/m

Speed of the spring oscillator, v = 3.34 m/s

We have to find out the amplitude of oscillation, say A.

According to the concept of Conservation of Energy, we can say that -

\(\frac{1}{2} mv^{2} = \frac{1}{2} kA^{2}\) ------ (1)

where,

m = mass of the oscillator

v = speed of oscillation

k = Spring constant

A = Amplitude of oscillation

Now, substituting the given values in equation (1), we have

\(\frac{1}{2} mv^{2} = \frac{1}{2} kA^{2}\\= > \frac{1}{2} *2.52*(3.34)^{2} = \frac{1}{2} *21.6*A^{2}\\= > 28.11211 = 10.8A^{2}\\= > A^{2}=2.60\\= > A = 1.61m\)

Therefore, the undamped horizontal spring oscillator has an amplitude of 1.61 m when passing through its equilibrium position during oscillation.

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The runner's total distance covered was 800 meters.  Her displacement (straight-line distance between start-point and end-point) was zero.

Her average speed = (distance)/(time) = 4.04 m/s

Her average velocity = (displacement) / (time) = zero (choice - c)

The energy released by the sun in one second, also known as the solar luminosity, is much greater than the annual energy usage of the earth.

The solar luminosity is estimated to be about 3.8 x 10^26 watts, while the total energy usage of the earth is estimated to be around 157,481 terawatt-hours per year, or about 18 x 10^12 watts. This means that the energy released by the sun in just one second is many orders of magnitude greater than the total energy used by all human activities on earth in a year. The sun's enormous energy output is what drives most of the physical and biological processes on our planet.

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The particle's turning points, speed at a specific position, maximum speed, description of motion, and possible motions with a different potential energy are discussed.

a) The particle's turning points occur at approximately x = -1.0 m and x = 3.5 m, where the potential energy is at its maximum and minimum values.

b) The particle's speed at x = 2.0 m can be determined by calculating the kinetic energy at that position using the conservation of mechanical energy. Since the mechanical energy is given as 12 J and the potential energy at x = 2.0 m is known, the kinetic energy can be found and then converted to speed.

c) The particle's maximum speed occurs at the positions where its kinetic energy is at its maximum. This can be determined by finding the positions where the potential energy is at its minimum, using the conservation of mechanical energy.

d) The motion of the particle from the left turning point to the right turning point can be described as oscillatory motion or simple harmonic motion. As the particle moves away from the left turning point, it accelerates due to the change in potential energy, reaches maximum speed at the equilibrium position, and then decelerates as it approaches the right turning point.

e) If the potential energy is lowered to 4.0 J, the particle will have a different equilibrium position and the turning points will be at different locations.

The specific motions of the particle will depend on the new shape of the potential energy graph, and it could exhibit oscillatory motion or other types of motion depending on the specifics of the potential energy function.

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An object is illuminated by red, green, and blue light if it is illuminated by white light. Only red and green light will be reflected from an item if it absorbs blue light.

White light causes an object to seem blue because it reflects only blue light and absorbs all other colors. Since there is no color to reflect when that object is placed in red light, it absorbs all of the red light that strikes it and appears black.

We mostly notice colors in reflected light. The room's variously colored objects reflect some of the white light while absorbing the rest. A blue shirt shows that white light contains blue light because blue wavelengths are reflected by blue and are absorbed by blue.

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In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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Star B is closer than star A, because 1/ 0.58 = 1.72 pc, while 1/.73 = 1.36 pc.

To calculate the distances to nearby stars, astronomers employ a phenomenon known as parallax. The apparent displacement of an object due to a change in the viewer's point of view is known as parallax. The distances between close stars can be calculated using this phenomenon. A nearer star will seem to move against the farther-off background stars as the Earth revolves around the Sun. By measuring a star's position once, then again six months later, astronomers can establish the apparent shift in location of that star. The apparent motion of the star is referred to as stellar parallax.

A straightforward correlation exists between the distance of a star and parallax angle:

\(d=\frac{1}{p}\)

The distance d and parallax angle p are both measured in parsecs and arcseconds, respectively.

Stellar parallax of star A= 0.58 arcseconds

Stellar parallax of star B= 0.73 arcseconds

So, on applying the formula,

The distance of the star A= 1.72pc

And the distance of the star B= 1.36pc

Therefore, star B is closer than star A.

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Newton’s second law of motion seems simple enough: Push on an object of a certain mass, and it accelerates based on the amount of force and mass. A small force with a large mass results in a slow acceleration, and a large force with a small mass gives a fast acceleration. What happens when there’s no force? A force of zero on any mass gives zero acceleration. If the object is standing still, it remains still; if it’s moving, it continues to move at the same speed and direction. Keep in mind that several forces can be involved at the same time. For example, you tie a rope around a boulder and pull with all your might. There are force and mass, but the boulder doesn’t budge, so acceleration is zero. The force of friction between the boulder and the ground cancels out the force of your pull. You need a much bigger force, such as from a tractor, to move the boulder.

Answer:

Force ∝ Acceleration

Explanation:

Force is directly proportional to acceleration. This is because as you increase force, the acceleration increases.

The final velocity of the handcar in case A is 7.80 m/s to the east, and in case B is 6.02 m/s to the east.

The total mass of the passengers is 65.0 kg x 3 = 195.0 kg. When they jump off the car to the west, the total momentum of the system is conserved. Let the final velocity of the car be v. Then:

(mass of car + contents) x initial velocity of car = mass of car x final velocity of car + mass of passengers x velocity of passengers

(150 kg) x (5.50 m/s) = (150 kg) x v + (195.0 kg) x (-5.50 m/s)

825 = 150v - 1072.5

v = 12.5 m/s to the east

Therefore, the final velocity of the car is 12.5 m/s to the east.

Let the final velocity of the car be v. Then:

(mass of car + contents) x initial velocity of car = mass of car x final velocity of car + mass of package x velocity of package

(150 kg) x (5.50 m/s) = (150 kg) x v + (45.0 kg) x (-15.0 m/s)

825 = 150v - 675

v = 9.0 m/s to the east

Therefore, the final velocity of the car is 9.0 m/s to the east.

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--The complete question is, A railroad handcar is moving along straight, frictionless tracks with negligible air resistance. In the following cases, the car initially has a total mass (car and contents) of 150 kg and is traveling east with a velocity of magnitude 5.50 m/s. Find the final velocity of the car in each case, assuming that the handcar does not leave the tracks.

A) Three passengers, each with a mass of 65.0 kg, jump off the back of the car to the west.

B) A 45.0 kg package is thrown off the back of the car to the west with a speed of 15.0 m/s.--

Answer:

The magnetic pole, is the region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in the Earth's magnetic field orients itself in a north–south direction. The north-seeking pole of such a magnet, or any similar pole, is called a north magnetic pole.

Explanation:

Light passes from an object through the video camera lens and is converted into an electrical signal by an image sensor.

An image sensor, sometimes known as an imager, is a sensor that detects and transmits information required to create an image.

It accomplishes this by translating the changing attenuation of light waves into signals, which are tiny bursts of electricity that carry information.

An image sensor converts light from an object that passes through the video camera lens into an electrical signal.

Light passes from an object through the video camera lens and is converted into an electrical signal by an image sensor.

Hence,image sensor is the correct answer.

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Answer:

36,000j

Explanation:

W= P•t

120•300= 36000

I checked my answer with P= W/t and got the right answer

hope this helps

v = u + at

25 = 0 + a(14)

a(14) = 25

a = 25/14

a = 1.71 (3sf)

explanation:

u use the equation of motions

v = u + at

v is final velocity, aka 25

u is initial velocity, which is 0 as it was initially at rest

t is time, which is 14s

then u sub in the values and calculate a

Answer:

  C (only)

Explanation:

Often, we consider the 0 position on a graph like this to be the starting point. However, the position on this graph is indicated as positive at time = 0. The motion shown can be described in each stage as follows.

A: moving away from the starting position toward the reference position (position = 0)

B: stationary at the reference position

C: moving away from the reference position toward the starting position

D: stationary at a point just short of the starting position

E: moving away from the starting position toward, then beyond, the reference position

The term "flexibility" refers to an object's ability to take different forms.  High degree of flexibility is found in objects made by flexible materials.

Flexibility is a property that describes the ability of an object or material to bend, stretch, or change shape without breaking or losing its structural integrity. It is a measure of how easily an object can be deformed under the influence of external forces.

The flexibility of an object is determined by its composition, structure, and physical properties. Objects that are made of flexible materials, such as rubber or certain types of plastics, have a high degree of flexibility. They can be bent, twisted, or stretched without permanently deforming or breaking. In contrast, objects made of rigid materials, like metal or glass, have lower flexibility and are less prone to deformation.

Flexibility is an important characteristic in various fields, including engineering, materials science, and biomechanics. It allows for the design of structures and materials that can withstand different forces, adapt to different environments, and perform specific functions effectively.

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In the field of physics, total internal reflection refers to the entire reflection of a beam of light that is traveling through a medium such as water or glass back into the medium itself from the surfaces that surround the medium.

When the angle of incidence is larger than a specific limiting angle, which is referred to as the critical angle, the phenomena will take place. When a ray of light traveling through a medium with a higher index of refraction approaches another medium with an angle of incidence that is greater than the critical angle, a phenomenon known as total internal reflection occurs. In general, this phenomenon takes place at the boundary between two transparent media.

True statements are;

1. A smaller critical angle means the total internal reflection is more likely to occur.

2. Fiber optic cables are practical applications of total internal reflections.

False statements are;

1. When light hits a boundary at a less than the critical angle, it will undergo total internal reflection.

2. Single reflection of light of a silvered mirror is more efficient than total internal reflection so mirrors are often used instead of prisms in optical instruments to minimize light loss.

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Answer:

under developed soil horizons

a) The equivalent capacitance of the two capacitors connected in series is 4 µF b) The 6 µF capacitor stores more charge than the 18 µF capacitor c) The charge stored in the 6 µF capacitor is 168  µC, and the charge stored in the 18 µF capacitor is 504 µC.

a) When capacitors are connected in series, the reciprocal of the equivalent capacitance is equal to the sum of the reciprocals of the individual capacitances. In this case, the equivalent capacitance (Ceq) can be calculated as:

1/Ceq = 1/C1 + 1/C2 = 1/6 µF + 1/18 µF = (3 + 1)/18 µF = 4/18 µF = 2/9 µF.

Thus, the equivalent capacitance is 4 µF.

b) The charge stored in a capacitor is directly proportional to its capacitance. Therefore, the capacitor with a larger capacitance stores more charge. In this case, the 6 µF capacitor stores more charge than the 18 µF capacitor.

c) The charge stored in a capacitor (Q) can be calculated using the formula Q = C * V, where C is the capacitance and V is the voltage across the capacitor. For the 6 µF capacitor, the charge is:

Q1 = 6 µF * 28 V = 168 µC.

For the 18 µF capacitor, the charge is:

Q2 = 18 µF * 28 V = 504 µC.

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Answer:

A force of 355 N is applied to an object that accelerates at a rate of 7.8 m/sec2 . What is the mass of the object ?

Explanation:

The right answer is Frequency. Option A

Frequency is defined as the number of wave oscillations per unit of time and is measured in hertz. Frequency is directly proportional to pitch. Distance from the rest position to maximum shaft deflection. Frequency The number of waves he passes through a particular point per second. Measures the time it takes for a wave cycle to complete.

Maximum displacement or distance traveled by a point on the vibrating body or shaft, measured from the equilibrium position. This corresponds to half the length of the vibration path. The frequencies are opposite. The number of wave cycles to complete per second. Both amplitude and wavelength are measures of distance. Amplitude measures the height of the wave crest from the centerline. Wavelength measures the horizontal distance between cycles.

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The force that B exerts on A is 1.0 × 10^-2 newton, which is option D.

To calculate the force that B exerts on A, we can use Coulomb's law which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

The formula for Coulomb's law is: F = kq1q2/d^2, where F is the force, k is Coulomb's constant (9 × 10^9 N·m^2/C^2), q1 and q2 are the charges, and d is the distance between the charges.

Given that charge A is +2.0 x 10^6 coulomb, charge B is +1.0 x 10^-6 coulomb, and the force that A exerts on B is 1.0 × 10^-2 newton, we can rearrange the formula to solve for the force that B exerts on A:

F = kq1q2/d^2
1.0 × 10^-2 = (9 × 10^9)(2.0 × 10^6)(1.0 × 10^-6)/d^2

Simplifying this equation, we get:

d^2 = (9 × 10^9)(2.0 × 10^6)(1.0 × 10^-6)/(1.0 × 10^-2)
d^2 = 1.8 × 10^5
d = 424.3 meters (rounded to three decimal places)

Now that we know the distance between the charges, we can use Coulomb's law again to calculate the force that B exerts on A:

F = kq1q2/d^2
F = (9 × 10^9)(1.0 × 10^-6)(2.0 × 10^6)/(424.3)^2
F = 1.0 × 10^-2 newton

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Answer:

the correct answer is b 8/3

Answer:

there yah go that's the answer