Determine the gravitational force that (a) the Sun exerts on the Moon, (b) Earth exerts on the Moon, and (c) the Moon exerts on Earth.

The statement "Stars have their own light" is the true statement of the following.

The answer is Option (C).

Stars are one of the most important celestial bodies in the universe. At the base of any existing system, there exists a star, providing heat, and light and holding many bodies together with their immense gravity.

Millions of stars are born every minute, and many of them die in explosions, which are extremely beautiful.

Now, by looking at the statements given, we can understand a few properties of stars.

Our Sun, which is very huge in size compared to the planet we live in, is in reality very small compared to the other stars in the universe. As a fact, the largest star is about 5 billion times larger than our Sun.

All the stars which we see in our night sky are actually not so nearby. Some of them are millions of light-years away but emit light bright enough to be visible at such a great distance.

Stars do have their own light, emitted due to the continuous fusion reactions in the stars. They provide a seemingly endless source of energy, which runs them for billions of years.

Thus, the statement in option (C) is correct.

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The true statement about stars is that stars have their own light.

stars are massive celestial bodies made up of hot gases, primarily hydrogen and helium. They emit light and heat energy through the process of nuclear fusion occurring in their cores. Stars vary in size, temperature, and brightness.

The statement 'stars have their own light' is true. Stars generate their own light through the process of nuclear fusion. The intense heat and pressure in their cores cause hydrogen atoms to fuse together, forming helium and releasing a tremendous amount of energy in the form of light and heat. This process is what makes stars shine.

On the other hand, the statement 'Stars are so close to Earth' is false. While stars may appear close to each other in the night sky, they are actually incredibly far away from Earth. The distances between stars are measured in light-years, which is the distance light travels in one year.

Therefore, the correct answer is 'C. Stars have their own light.'

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Given data:

The given time is t=1 s.

From the graph following observation can be made,

The amplitude of the graph is A=10 cm=0.1 m.

The time period is t=1 s.

The angular velocity can be calculated as,

The speed can be at t=1 s will be,

Thus, the spee

simple subtract and ummmmmm.....

Answer:

We know that F=ma

the force required depends on acceleration as well as the mass.

if a person has bag means the total mass is of course large

so force is also large

then it becomes difficult

The magnitude of velocity in east direction will be 650 N approximately.

What is velocity ?

velocity is given by the change in distance by the object with respect to change in time. It is a vector quantity and having S.I unit as m/s.

Here it is given that magnitude of velocity is 750 N and making an angle of 30 degree with x axis in counterclockwise direction as shown in figure below :

Now resolving and writing magnitude of velocity V in x and y direction respectively :

\(\begin{aligned}Vcos\theta&= 750 cos30^{o}=650 \:m/s\\Vsin\theta&= 750sin30^{o}= 375 m/s\end{aligned}\)

It should be noted that \(vsin\theta\) is acting in negative y direction.

Therefore, the magnitude of velocity in east direction is 650 m/s

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Answer:

h = 11.47 m

Explanation:

Initial speed pf the t-shirt gun is 15 m/s

We need to find the maximum distance covered by the t-shirt. It is based on the conservation of energy. The maximum distance covered is given by :

\(h=\dfrac{u^2}{2g}\\\\h=\dfrac{(15)^2}{2\times 9.8}\\\\h=11.47\ m\)

So, it will cover a distance of 11.47 m.

In this scenario, we have a horizontal spring oscillator with a block of mass m attached to a spring of spring constant k.

The block is pulled to the right a distance A and released at time t=0 with zero initial velocity. Since the vertical forces balance each other, we can assume that the only force affecting the motion of the block is the tension of the spring, resulting in simple harmonic motion.
The equation of motion for this system is given by a(t)=-\frac{k}{m}x(t), where a(t) is the acceleration of the block at time t, x(t) is the displacement of the block from its equilibrium position at time t, and m is the mass of the block.
The solution to this equation provides the equation for x(t), which is x(t)=A\cos(\omega t), where ω=\sqrt{\frac{k}{m}} is the angular frequency of the oscillator.
From this equation, we can derive the formulas for the major characteristics of motion as functions of time. The velocity of the block at time t is given by v(t)=-A\omega\sin(\omega t), while the acceleration of the block at time t is given by a(t)=-A\omega^2\cos(\omega t).
In summary, for a horizontal spring oscillator with a block of mass m attached to a spring of spring constant k, the equations for the major characteristics of motion as functions of time are

x(t)=A\cos(\omega t),

v(t)=-A\omega\sin(\omega t), and

a(t)=-A\omega^2\cos(\omega t),

where ω=\sqrt{\frac{k}{m}} is the angular frequency of the oscillator.
x(t) = A * cos(ω * t),
where:
- x(t) is the position of the mass at time t,
- A is the amplitude, which is the maximum displacement from the equilibrium position,
- ω is the angular frequency, and
- t is the time elapsed.
Now let's derive the formulas for other characteristics of motion, including velocity and acceleration, as functions of time.
1. Velocity (v):
To find the velocity as a function of time, we need to differentiate x(t) with respect to t: v(t) = dx(t)/dt = -A * ω * sin(ω * t),
where v(t) is the velocity of the mass at time t.
2. Acceleration (a):
To find the acceleration as a function of time, we need to differentiate v(t) with respect to t:

\(a(t) = dv(t)/dt = -A * \omega^2 * cos(\omega * t),\)
Since a(t) = - (k/m) * x(t), we can relate the angular frequency ω to the spring constant k and mass m: \(\omega^2 = k/m\).

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The-ratio of their gravitational potential energy is \(1:2\). The unit of measurement for any and all types of energy, which would include kinetic and potential energy, is kilograms per square second, or kg*m2/s2 (J).

Height \(H_{1} = h\)

Height \(F_{2} = 2h\)

Mass of body 1 = m

Mass of body 2 = m

Gravitational potential energy of body  \(1 = mgH 1 =mgh\)

Gravitational potential energy of Body 2 \(= mgH 2 =mg(2h)\).

Ratio of gravitational potential energies

\(=\frac{mgh}{mg (2h)} =\frac{mgh}{2mgh} =\frac{1}{2} = 1:2\)

What Unit of Measurement Is Potential Energy in?

Due to the fact that energy and work quantify identical types of force, the Joule is indeed the proven scientific measurement device for either of those.

How do you calculate kinetic energy?

K E = 1 2 m v 2 is the formula for kinetic energy. When m denotes the body's weight as well as v denotes its velocity, KE stands for kinetic energy.

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The conservation of momentum P states that the amount of momentum remains constant when there are not external forces.

We don't have external forces, so:

\(P_0 = P_1\\m_bv_{0b}+m_pv_{0p}=m_bv_{1b}+m_pv_{1p}\\\)

Where:

Solving for v0b:

\(v_{0b} =\dfrac{m_bv_{1b}+m_pv_{1p}- m_pv_{0p}}{m_{b}}\\\\v_{0b} =\dfrac{(7\;kg)(4\;m/s)+(2\;kg)(6\;m/s)- (2\;kg)(0 \;m/s)}{7\;kg}\\v_{0b}=\dfrac{40}{7}\;m/s\\\\\boxed{v_{0b}\approx5.71\;m/s}\)

The original velocity of the ball is 5.71 m/s.

The principle of conservation of momentum: In a closed system, The total momentum before collision is equal to total momentum after collision.

From the principle of conservation of momentum,

MU+mu = MV+mv.................... Equation 1

Where M = mass of the bowling ball, m = mass of the pin, U = initial velocity of the bowling ball, u = initial velocity of the pin, V = final velocity of the bowling ball, v = final velocity of the pin.

From the question,

Given: M = 7 kg, m = 2 kg, u = 0 m/s (at rest), v = 6.0 m/s, V = 4 m/s.

Substitute these values into equation 1 and solve for U

7(U)+2(0) = 7(4)+2(6)

7U = 28+12

7U = 40

U = 40/7

U = 5.71 m/s.

Hence, The original velocity of the ball is 5.71 m/s.

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Answer:

Michael is heavier.

Explanation:

If Michael is 104 pounds, that is equal to 47 kg.

Erica is 44 kg which is 97 pounds.

104 is greater than 97, and 47 is greater than 44.

Answer:

Michael weighs more

Explanation:

First, you need to convert either kilograms into pounds or pounds into kilograms. For this problem, I will convert kilograms into pounds.

Multiply 44kg by 2.2 pounds to find how many pounds are in 44 kg

44 x 2.2 = 96.8 pounds

Michael - 104 pounds

Erica - 96.8 pounds

Michael is heavier than Erica because he weighs 7.2 pounds more than her.

(pounds to kilograms - 104/2.2 = 47.3 kg   Michael weighs 7.3 kilograms more than Erica)

An  example of diffraction is being able to hear sounds from outside a room throughout the whole room.

The term diffraction has to do with the bending of waves around an obstacle which causes the waves to spread out as they emerge on the other side.

One typical example of diffraction is being able to hear sounds from outside a room throughout the whole room.

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This situation best reflects the influence of which economic thinker is John Maynard Keynes

The following information should be considered:

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Answer:

The potential difference at the customer's house is 117.1 V.

Explanation:

a) The potential difference at the customer's house can be calculated as follows:

\( \Delta V_{h} = \Delta V_{p} - \Delta V_{l} \)

Where:

\(V_{h}\): is the potential difference at the customer's house

\(V_{p}\): is the potential difference from the main power lines = 120 V

\(V_{l}\): is the potential difference from the lines

\( \Delta V_{h} = \Delta V_{p} - IR \)

The resistance, R, is:

\(\frac{0.109 \Omega}{300 m}*2*34.0 m = 0.025 \Omega\)

Now, the potential difference at the customer's house is:

\(\Delta V_{h} = 120 V - 116A*0.025 \Omega = 117.1 V\)

Therefore, the potential difference at the customer's house is 117.1 V.

I hope it helps you!

The kinetic energy in MeV of the atomic nucleus in the lab frame is 78448.67 MeV.

Kinetic energy is the power an object has because of its motion. If we want to boost up an object, then we must follow a force. making use of force requires us to do paintings. After work has been accomplished, energy has been transferred to the object, and the object might be moving with a new consistent speed.

Calculation:-

E₀ ( rest energy) = 8875  Mev

u (speed)  = 0.99159

Then,

The energy of e⁻ move in the cab frame = rest energy + kinetic energy

So,

E₀ + (1/√1 - v²/c²)E₀

Then,

K.E = E₀/√1 - v²/c²

So, we put all the values in the above eq:-

K.E = 8875/√(0.0127987)²

K.E = 8875/ 0.1131313

K.E = 78448.67 MeV

The kinetic energy of an item is the electricity that it possesses because of its motion. it is defined because the work needed to boost up a frame of a given mass from relaxation to its stated pace. Having gained this energy for the duration of its acceleration, the frame maintains this kinetic electricity except for its pace changes.

Potential energy saved energy that relies upon the relative position of numerous components of a gadget. A spring has greater potential energy when it is compressed or stretched. A steel ball has extra capability strength raised above the ground than it has after falling to Earth.

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Answer: Tree

Explanation: Cause they don't have mouth to drink water they just have root

Answer:current

Explanation:water flows down a river. Current flows down a wire (in the drude model, at least)

Answer:

electricity

Explanation:

A particle with charge +e, baryon number 0, and strangeness +1 may content three quarks according to charge conservation along with other fundamental particles.

Particle physicists started to understand in the 1960s that quarks, not hadrons, are what make up hadrons, which are not truly elementary particles. (The word "quark" was first used by physicist Murray Gell-Mann in the James Joyce novel Finnegans Wake.) At first, it was thought there were just three sorts of quarks: up (u), down (d), and strange (s). However, this number quickly increased to six, which is interestingly the same as the number of leptons, to include charmed (c), bottom (b), and top (t).

Quarks may have charge of either +2/3e or -1/3e, baryon number 1/3 and strangeness  number either 0 or -1.

So, a particle with charge +e, baryon number 0, and strangeness +1 may content three quarks according to charge conservation along with other fundamental particles.

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Where MI cable terminates, a seal shall be provided immediately after stripping to prevent the entrance of moisture into the insulation.

When terminating MI (mineral-insulated) cable, we need to ensure that the cable is properly sealed to prevent the ingress of moisture into the insulation. Moisture can cause corrosion, breakdown of the insulation, and other problems that can compromise the safety and integrity of the cable.

To prevent this, a seal should be provided immediately after stripping the cable. The seal should be applied securely and in accordance with the manufacturer's instructions to ensure that it provides an effective barrier against moisture ingress.

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Mechanical energy is the amount of energy acquired by a working object. Mechanical Energy (M.E.) = ((1/2)mv2) + (m × g × h)

Mechanical energy is produced by sourcing potential and kinetic energy and turning it into power.

m = mass of object,

v = velocity of object,

g = acceleration due to gravity,

h = height of object from ground.

M.E. = K.E. + P.E

M.E = 1/2 * 9 *(76.8)2 + 9 * 9.8 * 107

M.E = 26,636.45 J

Mechanical energy, also known as kinetic energy or potential energy, is the energy that an object possesses when it is in motion or the energy that an object stores due to its location. Renewable energy is also fueled by mechanical energy. In order to efficiently produce electricity or convert energy, many sources of renewable energy depend on mechanical energy.

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The scalar product of two vectors A and B can be expressed as A · B = a1b1 + a2b2.

For the given vectors A = a1i + a2j and B = b1i + b2j, the scalar product is A · B = a1b1 + a2b2.

The scalar product of two vectors is a number that can be calculated by multiplying each of the vectors’ components together and then adding them together.

In the given vectors, A and B, the scalar product is calculated by taking the product of the components of each vector and then adding them together.

The components of vector A are a1i and a2j, and the components of vector B are b1i and b2j. When these components are multiplied together and added, we get A · B = a1b1 + a2b2, which is the scalar product of the two vectors.

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Answer:

Explanation:

The law of conservation of mass states that the mass of the elements at the beginning of the reaction(reactants) will equal the mass at the end of the reaction (product) .

In the chemical equation above,the total mass of the reactants is 80g(16+64) and the total mass of the products is also 80g(44+36).therefore the mass remained constant and that's how the equation represents the law of conservation of mass

Answer:

Therefore, the electrical conductivity of the wire is approximately 5.0 * 10^3 S/m.

Explanation:

To calculate the electrical conductivity of the wire, we can use the formula:

Electrical conductivity (σ) = (1 / Resistivity)

The resistivity (ρ) can be calculated using the formula:

Resistivity (ρ) = (Resistance x Cross-sectional Area) / Length

Given:

Length (L) = 200 cm

Cross-sectional Area (A) = 2.0 * 10^(-3) cm^2

Resistance (R) = 0.20

First, let's convert the length to meters:

L = 200 cm = 2 meters

Now, let's substitute the values into the resistivity formula:

ρ = (0.20 * 2.0 * 10^(-3)) / 2

ρ = 0.20 * 10^(-3) = 2.0 * 10^(-4)

Finally, we can calculate the electrical conductivity:

σ = 1 / ρ

σ = 1 / (2.0 * 10^(-4))

σ ≈ 5.0 * 10^3 S/m

Therefore, the electrical conductivity of the wire is approximately 5.0 * 10^3 S/m.

Answer:

V = E*d

D = 1.5 cm * [1 m / 100 cm] = 0.015m

V = 2.9^10^6 N/C * 0.015 m

V = 1.93 * 10^9 V

The units don't agree in any simple way, but the formula is correct, and it does work.

Explanation:

V = 1.93 * 10⁹ V

The electric potential difference is the difference in electric potential (V) between the final and the initial location when work is done upon a charge to change its potential energy.

The electrical potential difference between the two plates is expressed as V = E d ,

The electric field strength times the distance between the plates.

The units in this expression are Newtons/coulomb times meters, which gives the final units Joules/coulomb.

V = E*d

D = 1.5 cm * [1 m / 100 cm] = 0.015m

V = 2.9*10⁶ N/C * 0.015 m

V = 1.93 * 10⁹ V

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A) The mass of 28.76 mL of acetone is approximately 22.7 g.

B) The volume of 6.40 g of acetone is approximately 8.12 mL.

A) To determine the mass of 28.76 mL of acetone, we need to know the density of acetone. The density of acetone is approximately 0.789 g/mL. Therefore, we can calculate the mass as follows:

Mass = Volume * Density

Mass = 28.76 mL * 0.789 g/mL

Performing the calculation:

Mass ≈ 22.67564 g

Rounding the result to the correct number of significant figures, the mass of 28.76 mL of acetone is approximately 22.7 g.

B) To determine the volume of 6.40 g of acetone, we can rearrange the formula:

Volume = Mass / Density

Volume = 6.40 g / 0.789 g/mL

Performing the calculation:

Volume ≈ 8.116 g/mL

Rounding the result to the correct number of significant figures, the volume of 6.40 g of acetone is approximately 8.12 mL.

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Explanation:

55×60=3300

2×60=120

3300+120=3420

speed=distance/time

speed=3420/217

x=15.6ms^-1

Her speed is approximately 1.24 meters/second.

To calculate Michelle's speed, you need to convert the time to a single unit (seconds) and then use the formula:

Speed = Distance / Time

Given that Michelle walked 217 meters in 2 minutes and 55 seconds:

Time in seconds = 2 minutes * 60 seconds/minute + 55 seconds = 120 seconds + 55 seconds = 175 seconds

Now, let's calculate her speed:

Speed = 217 meters / 175 seconds = 1.24 meters/second

Rounded to two decimal places, her speed is approximately 1.24 meters/second.

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Answer:

6 m/s

Explanation:

momentum= mass times velocity

120 = 20v

v = 120/20

Answer:

7

Explanation:

7

The moon setting on your way to work about two hours after sunrise means it is in the gibbous phase.

This phase of the moon involves its side facing the Earth appearing more than half-lit by the Sun, but is less than fully lit.

This phase occurs few hours after sunrise usually in the early morning which is why it is the most appropriate choice.

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The speed of the sound wave after the flash was seen, in the experiment for measuring the speed of sound gun is 110 m/s.

The speed of the sound wave can be determined by applying the principle of echoe as shown below;

v = 2d/t

where;

v = (2 x 715) / (13)

v = 110 m/s

Thus, the speed of the sound wave after the flash was seen, in the experiment for measuring the speed of sound gun is 110 m/s.

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