What created the point from which the BigBang was created

Answer:

The correct answer is "6.015×10⁴ J/K".

Explanation:

The given values are:

Mass of water,

= 10 kg

Latent heat of boiling,

= 2257 kJ

Constant temperature,

= 100°C

The entropy change will be:

= \(\frac{mass\times latent \ heat \ of \ boiling}{temperature}\)

On substituting the values, we get

= \(\frac{10\times 2257\times 1000}{(273+100)K}\)

= \(\frac{22,570,000}{373K}\)

= \(6.051\times 10^4 \ J/K\)

Answer:

Some muscles in the body are “involuntary”, which means you can't control them. The heart is made of a special involuntary muscle called cardiac muscle, and this muscle is made up of cells called cardiomyocytes (which literally means “heart muscle cells” in Latin)

For the reason that the green car's initial velocity and acceleration are equal in both instances, it follows that you could use the time the pink automobile wishes to attain those two factors to write two equations with unknowns, the inexperienced vehicle's.

V0=-14.56m/s

a=-4.96m/s²

A red automobile and an inexperienced car flow in the direction of each different in adjacent lanes and parallel to an x-axis.

At time t = zero, the purple vehicle is at

XR = 0 and the green vehicle is at

Xg = 216 m.

If the red vehicle has a constant velocity of 27.0 km/h, the motors bypass every difference at x = 44.2 m. then again, if the red automobile has a steady velocity of fifty-four. 0 km/h, they skip every difference at

x = 76.7 m.

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Answer:

ΔT = 28.667°C is the answer.

Explanation:

Given,

Mass of water = 4.0 kg

Water is heated by = 8 × 10² W = 800 W

Time = 10 min = 10 × 60 = 600 s

Now,

using the equation of specific heat,

Q = mcΔT

where c is the specific heat capacity of water = 4186 J/kg°C

Q = Pt

Substituting,

Pt = mcΔT

800 × 600 = 4 × 4186 × ΔT

480000 = 16744 × ΔT

ΔT = 28.667

∴Temperature increased, ΔT = 28.667°C

Option (D) is the correct answer

Given data:  width of each slit, a = 0.80 mm.        

distance between the slits, d = 2.6 mm

If the wavelength of light is \lambda then,

2.6 ) = 2 x (0.8) = 6.5 r=2x

x = 7 ( taking the next higher integer of 6.5)

The wavelength of a wave describes how lengthy the wave is. The distance from the "crest" (top) of 1 wave to the crest of the following wave is the wavelength.

Alternately, we can degree from the "trough" (bottom) of 1 wave to the trough of the subsequent wave and get the equal price for the wavelength.

SI unit of wavelength is metre . At the same time as measuring wavelength the multiples or fractions of a metre is also used. Extensively, exponential powers of 10 are used whilst wavelengths are of a huge assets.

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Answer:

A gallon of water would be a good household object to use for strength training.

Explanation:

Gallon jugs of water typically weigh around 8.3 lbs, which can provide a good amount of resistance for strength training exercises such as bicep curls, shoulder presses, and tricep dips. Additionally, the handle on the jug of water makes it easy to grip and use for various exercises. Cans of soup and boxes of tissues are generally too light to provide enough resistance for strength training, and a paperback book may not be sturdy enough to use for certain exercises.

Answer:

b. 375 Ohms

Explanation:

Given the following data;

Voltage = 4.5 V

Current = 12 mA

To find the resistance;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

\( V = IR\)

Where;

Conversion:

1000 mA = 1 A

12 mA = 12/1000 = 0.012 A

\( R = \frac {V}{I} \)

Substituting into the formula, we have;

\( R = \frac {4.5}{0.012} \)  

Resistance, R = 375 ohms

It's important to remember that not all individuals will experience the same physical changes at the same rate, and some may experience different changes due to genetics, lifestyle, and other factors.

Yes, there are differences in the physical appearance of an individual in each stage of their development. Here are some of the physical differences that typically occur at different stages:

It's important to remember that not all individuals will experience the same physical changes at the same rate, and some may experience different changes due to genetics, lifestyle, and other factors.

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Answer:

-36.4 m/s

Explanation:

final velocity= initial velocity + acceleration x time

7 + (-9.8)(3)= -36.4 m/s

The answer is -36 m/s.

Final velocity= initial velocity + acceleration x time

7 + (-9.8) (3) = -36.4 m/s

Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time.

Instantaneous velocity refers to an object's velocity at an exact moment in time. Acceleration is the change in the velocity of an object, either as it increases or decreases. Acceleration is also a vector and will have both a value and a direction.

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According to the statement, the vapor pressure of the NaCl solution is 22.63 torr.

To calculate the vapor pressure of the NaCl solution, we need to first calculate the mole fraction of water in the solution:

moles of water = mass of water / molar mass of water

moles of water = 150.0 g / 18.015 g/mol = 8.32 mol

moles of NaCl = mass of NaCl / molar mass of NaCl

moles of NaCl = 20.0 g / 58.44 g/mol = 0.342 mol

total moles = moles of water + moles of NaCl = 8.32 mol + 0.342 mol = 8.662 mol

X(water) = moles of water / total moles = 8.32 mol / 8.662 mol = 0.9603

Next, we can use Raoult's law to calculate the vapor pressure of the solution:

P = X(water) * P°(water)

Where P°(water) is the vapor pressure of pure water, which is given as 23.56 torr.

P = 0.9603 * 23.56 torr = 22.63 torr

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The mechanical advantage of using a ramp lies in the ability to spread the force needed to move the gurney over a longer distance. By gradually increasing the height through an inclined plane, the ramp allows for a reduced force requirement.

This advantage is particularly useful when dealing with heavy objects, as it minimizes the effort needed to achieve the desired displacement.

Mechanical advantage refers to the amplification of force achieved by using a tool or machine. It allows us to exert less force to accomplish a particular task. In the case of a ramp, the mechanical advantage arises from the inclined plane it provides.

To understand this better, let's compare the process of lifting a gurney straight up to using a ramp. When you lift the gurney straight up, you are working against the force of gravity acting on its weight. The force required to lift the gurney vertically is equal to its weight. This force can be calculated using the formula:

Force = Mass × Acceleration due to gravity

However, when you use a ramp, the situation changes. A ramp allows you to exert the force over a longer distance by gradually increasing the height. This extended distance compensates for the reduced force needed to move the gurney upward. As a result, you have to exert less force to achieve the same vertical displacement.

The mechanical advantage of using a ramp can be quantified by comparing the force required to lift the gurney straight up to the force required to push the gurney up the ramp. By using simple trigonometry, we can calculate the relationship between the applied force and the weight of the gurney.

The mechanical advantage (MA) of a ramp is given by the formula:

MA = Length of the ramp / Height of the ramp

The length of the ramp represents the horizontal distance covered, while the height of the ramp corresponds to the vertical displacement. As the length of the ramp increases or the height decreases, the mechanical advantage of the ramp increases.

For example, let's consider a ramp with a length of 4 meters and a height of 1 meter. The mechanical advantage would be:

MA = 4 meters / 1 meter = 4

This means that by using the ramp, you can exert only one-fourth (1/4) of the force required to lift the gurney straight up. In other words, you would need to apply four times less force when using the ramp compared to lifting the gurney vertically.

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Answer:

46 million tons

Explanation:

i dont know what im suppose to explain

Answer:

is there a better picture

Answer:

b. The branch with more resistance will have less current than the other branches

Explanation:

The resistance of a resistor, is the property of a conductive material that prevents or oppose the flow of current through it

The resistivity is the resistance per unit length per unit cross sectional area

Based on the nature of electric current flow and resistance; the electric current flows through the path of least resistance

Therefore, more of the electric current will flow through the branch with lowest amount of resistance while a lesser amount of current will flow through the branch with more resistance.

The pendulum was raised to an angle of approximately 1.05 degrees before being released.

The frequency range heard by the observer standing in the plane of the pendulum's motion is due to the Doppler effect. When the pendulum swings towards the observer, the frequency of the sound waves increases, and when it swings away, the frequency decreases. The difference between the maximum and minimum frequency heard is twice the frequency of the pendulum's motion.

We can use the formula for the frequency of a simple pendulum: f = (1/2π) √(g/l), where g is the acceleration due to gravity and l is the length of the pendulum.

Solving for l, we get l = g(1/(2πf))^2.

Substituting g = 9.8 m/s^2, f = 1024 Hz, and l = 1.2 m + string length, we get the length of the string to be 0.251 m.

Now, using the formula for the period of a simple pendulum: T = 2π √(l/g), we can find the time it takes for the pendulum to complete one swing. T = 0.986 seconds.

The range of frequencies heard by the observer is 8 Hz, which is twice the frequency of the pendulum's motion. So, the maximum frequency is 1028 Hz, and the minimum is 1020 Hz.

Using the formula for the Doppler effect: Δf/f = v/cosθ, where Δf is the frequency shift, v is the speed of the pendulum, and θ is the angle between the pendulum and the observer.

Solving for θ, we get θ = cos^-1(vΔf/(fvc)).

Substituting v = 1.2 m/T, Δf = 4 Hz (half the frequency range), f = 1024 Hz, and c = 340 m/s, we get the angle to be 1.05 degrees.

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gravity means that is not a force but the gravitational force is a force

For example we call the earth has a gravitational force but on moon we say that it doesn't have gravity

Answer:

Gravity is the Earth’s pull on a body, lying on near the surface of the Earth.

Gravitational force is the force of attraction acting between any two bodies.

Explanation:

The periscope is used in the submarines to see what is going on the water surface.

It is also used in some gun turrets and it is used in armed vehicles.

✨Hope it helps.✨

b) accelerate to the left as much more pressure is pulling it in that direction and on the right however , there is less force .

If the flea jumps straight up to a height of 0.670 m, it will be in the air 0.74 s.

The time that the flea will be in the air is given by the sum of the rise time and the fall time, which are the same:

\( t_{t} = t_{r} + t_{f} = 2t \)   (1)

Where:

\( t_{t} \): is the total time

\( t_{r} \): is the rise time = \( t_{f} \) (the fall time) = t

To calculate the rise time, and so the fall time, we can use the following equation:

\( v_{f} = v_{i} - gt \)  (2)

Where:

\( v_{f} \): is the final velocity = 0 (at the maximum height)

\( v_{i}\): is the initial velocity        

g: is the acceleration due to gravity = 9.81 m/s²

First, we need to find the initial velocity. We can use the equation:

\( v_{f}^{2} = v_{i}^{2} - 2gh \)   (3)

Where:

h: is the maximum height = 0.670 m

Hence, the initial velocity is (eq 3):

\( v_{i} = \sqrt{2gh} = \sqrt{2*9.81 m/s^{2}*0.670 m} = 3.63 m/s \)

Now, the rise and fall time is (eq 2):

\( t = \frac{v_{i}}{g} = \frac{3.63 m/s}{9.81 m/s{2}} = 0.37 s \)

Finally, the total time is (eq 1):

\( t_{t} = (0.37*2) s = 0.74 s \)

Therefore, the flea is in the air 0.74 s.

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On conservation of momentum:

(a) The cart goes in the opposite direction as the man does.

(b) With a speed of 0.07 m/s, the cart proceeds in the opposite direction as the guy.

(c) the cart starts moving in the forward direction with the same velocity of 0.07 m/s.

(a) As per the conservation of momentum, the total momentum of the system is conserved. Initially, the system was at rest, but when the man starts walking towards the other end, he gains some momentum in the forward direction, which the cart has to compensate for. So, the cart moves in the opposite direction to that of the man's motion.

(b) Assume that the man moves a distance of 10 m, i.e., the length of the cart.

Therefore, the total distance covered by the man is 20 m (10 m forward and 10 m backward).

The momentum gained by the man while walking forward is (70 kg) x (1.0 m/s) = 70 kg m/s.

As the total momentum of the system is conserved, the cart gains an equal and opposite momentum of -70 kg m/s.

The mass of the cart is 1,000 kg, so its velocity can be calculated using the conservation of momentum formula:

Total initial momentum = Total final momentum

0 = (70 kg) x (1.0 m/s) + (1,000 kg) x V

V = -0.07 m/s

So, the cart moves in the opposite direction to that of the man's motion with a speed of 0.07 m/s.

(c) When the guy comes to a complete halt at the back of the automobile, he loses the momentum he got while going forward, and the cart obtains equal and opposite motion. As a result, the cart begins going ahead at the same velocity of 0.07 m/s.

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Answer

It will stay the same!

Explanation:

If you so happen to move something from left to right, the size of it is not being shrunk or expanded in any type of way, shape, or form.

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

After the collision, the motorcycle's velocity is around 3.42 m/s, and the bicycle's velocity is approximately -1.42 m/s in the opposite direction.

To solve this problem, we can apply the principles of conservation of momentum and the coefficient of restitution. The conservation of momentum states that the total momentum before the collision is equal to the total momentum after the collision.

Let's denote the initial velocity of the motorcycle as v1, the initial velocity of the bicycle as v2, the final velocity of the motorcycle as v1f, and the final velocity of the bicycle as v2f.

The total momentum before the collision can be calculated as:

Initial momentum = (mass of the motorcycle * initial velocity of the motorcycle) + (mass of the bicycle * initial velocity of the bicycle)

= (75 kg * 10 m/s) + (45 kg * 8 m/s)

= 750 kg·m/s + 360 kg·m/s

= 1110 kg·m/s

According to the conservation of momentum, the total momentum after the collision is equal to the initial momentum:

Total momentum after the collision = (mass of the motorcycle * final velocity of the motorcycle) + (mass of the bicycle * final velocity of the bicycle)

= (75 kg * v1f) + (45 kg * v2f)

Now, let's consider the coefficient of restitution (e = 0.5). The equation for the coefficient of restitution is:

Coefficient of restitution (e) = (relative velocity of separation) / (relative velocity of approach)

= (v2f - v1f) / (v2 - v1)

Since it's a head-on collision, the relative velocity of approach is the sum of the velocities of the two masses before the collision:

Relative velocity of approach = v2 - v1

To find the relative velocity of separation, we can use the equation:

Relative velocity of separation = e * (relative velocity of approach)

= e * (v2 - v1)

Substituting these values into the equation for conservation of momentum, we have:

1110 kg·m/s = (75 kg * v1f) + (45 kg * v2f)

Since we have two unknowns (v1f and v2f), we need another equation to solve for them. Using the equation for the relative velocity of separation, we have:

v2f - v1f = e * (v2 - v1)

45 kg * v2f - 75 kg * v1f = 0.5 * (45 kg * 8 m/s - 75 kg * 10 m/s)

Now we have a system of two equations with two unknowns. Solving these equations simultaneously will give us the final velocities of the motorcycle (v1f) and the bicycle (v2f) after the collision.

By solving these equations, we find that the final velocity of the motorcycle (v1f) is approximately 3.42 m/s, and the final velocity of the bicycle (v2f) is approximately -1.42 m/s. The negative sign indicates that the bicycle is moving in the opposite direction after the collision.

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Answer:

No

Explanation:

The fastest recorded time for a person to run 100 metres is 9.58 seconds, which is the equivalent of 10.4 metres per second

Answer:

No

Explanation:

Humans can run as fast as 19.3m/s, using their full possible energy.

The correct answer is transmission, term describes the process by which light passes through an object or a medium is called transmission.

The experience of light is crucial to human life. Because of the sun's light, we can grow the food we eat, and we can also see because when we view anything, a particular wavelength of light is reflecting off the thing and reaching our eye. Even an object's color is influenced by light. But how does light move, and how does it interact with things once it gets there? What happens to light as it strikes objects around us will be covered in this session.

The tiny particles that make up light are known as photons. Due of their dual behavior as a particle and a wave, photons are incredibly intriguing.

A mirror reflects light when it is shone upon it, much like a bouncing ball or any other particle might. Imagine shining a light through a keyhole so that it illuminates the entire space rather than just a small portion of it, as a laser would. Similarly, if someone shouted through that keyhole, it would be heard across the entire room, not only in that one area. Since sound is also a wave, this is also how light behaves as both a wave and a particle.

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Answer:

larger

Explanation:

just trust me

The smaller the mass of an object, the smaller its inertia, because the inertia of any object is directly proportional to the mass of the object

The ability of an object to resist changes in motion is known as inertia. The amount of inertia is directly related to an object's mass; in fact, as we frequently observe, the heavier an object is, the harder it is to change its direction of motion.

A straightforward illustration: While it is relatively simple to stop a tennis ball that has been thrown in our direction, we are aware that it is more difficult to stop a large truck that is moving in the same direction at the same speed. This is because the truck has a much higher mass than the tennis ball and a higher moment of inertia. As a result, inertia rises as mass does.

Since the inertia of any object is directly proportional to its mass, the smaller its mass, the less inertia it will have.

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High-quality energy in natural processes has a tendency to transform into lower-quality energy, also known as entropy. This transformation follows the Second Law of Thermodynamics, which states that energy tends to disperse and become less concentrated and organized over time.

low-quality energy, as it is used and dispersed throughout the system. This is due to the second law of thermodynamics, which states that energy will naturally flow from a state of higher concentration to a state of lower concentration. Therefore, high-quality energy, such as the energy found in sunlight or fossil fuels, will tend to be transformed into lower-quality energy, such as heat or mechanical work, as it is utilized and moves through natural processes.
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In a space with hyperbolic geometry, the behavior of parallel lines differs from that of Euclidean geometry.

In hyperbolic space, parallel lines diverge from each other as they extend further.If two initially parallel flashlight beams traverse billions of light-years of space in a hyperbolic geometry, they will gradually diverge from each other. The divergence between the beams will increase as they travel a greater distance.

This phenomenon is a consequence of the non-Euclidean geometry of space. In hyperbolic space, the curvature causes parallel lines to "spread out" or diverge. The extent of the divergence will depend on the specific curvature of the space and the distance traveled.

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Answer:

dichotomous key

Explanation:

because it is