The change in momentum is 1.52 kg*m/s for a ball that strikes the floor for 1.05×10−2s1.05×10−2s. Find the force applied to the ball.

The latent heat of fusion is 335714.29 J/kg.

To calculate the latent heat of fusion, we can use the equation:

Q = m * L

Where:

Q = heat energy transferred

m = mass of the substance

L = latent heat of fusion

Given:

Mass of water (m) = 700 g = 0.7 kg

Heat energy transferred (Q) = 235200 J

To find the latent heat of fusion (L).

Since the water is being transformed into ice, we know that the heat energy transferred during this phase change is equal to the latent heat of fusion.

Rearrange the equation to solve for L:

L = Q / m

L = 235200 J / 0.7 kg

L ≈ 335714.29 J/kg

Therefore, the latent heat of fusion is approximately 335714.29 J/kg.

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It will take the train 20.88 seconds to come to a full stop.

To answer this question, we need to use the formula for angular acceleration:

angular acceleration = (final angular velocity - initial angular velocity) / time

Since the train is slowing down, the final angular velocity will be zero. The initial angular velocity can be calculated using the formula for tangential speed:

tangential speed = radius x angular velocity

We know that the train has a speed of 8.77m/s, but we need to convert this to tangential speed. Assuming the train's wheels have a radius of 1m (a common assumption for train wheels), we can use the above formula to find the angular velocity:

8.77 = 1 x angular velocity
angular velocity = 8.77 rad/s

Now we can use the formula for angular acceleration to find the time it will take the train to come to a full stop:

0.42 = (0 - 8.77) / time
time = -8.77 / 0.42
time = 20.88 seconds

Therefore, it will take the train 20.88 seconds to come to a full stop.

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Answer:

Increasing

Explanation:

I Hope it Helps

Answer:

One object has a large mass, and the objects are close together.

Answer:

15 N

Explanation:

3 kg x5 m/ s square

15( kg x m/s square)

Answer:

In the double-entry system, transactions are recorded in terms of debits and credits. Since a debit in one account offsets a credit in another, the sum of all debits must equal the sum of all credits.

Explanation:

Answer:

when volume and the number of particles are constant

Explanation:

Gay Lussac law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Gay Lussac's law is given by;

\( PT = K\)

\( \frac{P1}{T1} = \frac{P_{2}}{T_{2}}\)

The ideal gas law is the equation PV = nRT

Where;

P is the pressure.

V is the volume.

n is the number of moles of substance.

R is the ideal gas constant.

T is the temperature.

Generally, raising the temperature of an ideal gas would increase its pressure when volume and the number of particles are constant.

This ultimately implies that, when volume and the number of particles are held constant, there would be a linear relationship between the temperature and pressure of a gas i.e temperature would be directly proportional to the pressure of the gas. Thus, an increase in the temperature of the gas would cause an increase in the pressure of the gas at constant volume and number of particles.

Answer:

In physics, a state of matter is one of the distinct forms in which matter can exist. Four states of matter are observable in everyday life: solid, liquid, gas, and plasma.

...

To From Gas

Solid Deposition

Liquid Condensation

Plasma Ionization

To count the number of valence electrons, you need to determine the group number of the element in the periodic table and sum up the valence electrons for all atoms in the molecule or ion.

The Lewis structure is a representation of the molecule or ion, showing the arrangement of atoms and valence electrons. The central atom is usually the least electronegative element or the one with the highest valence. To determine the electron geometry, you consider the arrangement of electron groups (bonded and lone pairs) around the central atom using the VSEPR theory.

Counting the number of valence electrons: Look at the periodic table and find the group number of each element in the molecule or ion. The group number represents the number of valence electrons. For example, carbon (Group 14) has 4 valence electrons, oxygen (Group 16) has 6 valence electrons, etc. Sum up the valence electrons for all atoms to get the total number of valence electrons.

Drawing the Lewis structure: The Lewis structure is a visual representation of a molecule or ion that shows the arrangement of atoms and valence electrons. Start by connecting the atoms with single bonds. Distribute the remaining valence electrons as lone pairs around the atoms, following the octet rule (except for hydrogen, which only needs 2 electrons). Aim to minimize formal charges and achieve stability.

Determining the central atom: The central atom is usually the least electronegative element or the one with the highest valence. Carbon is often a central atom, but other elements like nitrogen or oxygen can also be central depending on the molecule or ion.

Determining the electron geometry: To determine the electron geometry, use the Valence Shell Electron Pair Repulsion (VSEPR) theory. Count the total number of electron groups around the central atom. Electron groups can be bonded pairs (atoms connected by single, double, or triple bonds) or lone pairs.

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The wavelengths at the frequency limits of 20 Hz and 20 kHz are approximately 17 meters and 0.017 meters (or 17 mm), respectively.

To determine the wavelengths at the frequency limits of 20 Hz and 20 kHz, we can use the equation:

Wavelength = Speed of Sound / Frequency

Given:

Speed of Sound = 340 m/s

Frequency:

Lower Limit = 20 Hz

Upper Limit = 20,000 Hz (20 kHz)

For the lower limit:

Wavelength_lower = Speed of Sound / Frequency_lower

= 340 m/s / 20 Hz

= 17 meters

For the upper limit:

Wavelength_upper = Speed of Sound / Frequency_upper

= 340 m/s / 20,000 Hz

= 0.017 meters (or 17 mm)

Therefore, the wavelengths at the frequency limits of 20 Hz and 20 kHz are approximately 17 meters and 0.017 meters (or 17 mm), respectively.

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Explanation:

F=ma

500N=10×a

a=500÷10=50m/s²

PLEASE GIVE BRAINLIEST

Answer:

50m^2

Explanation:

acceleration=f/m

The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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Answer:

The speed of a and b will be same about 3.333 m/s after collision.

Explanation:

In a perfectly inelastic collision the bodies gets attached to each other after collision .

In this type of collision the final  kinetic energy gets lowered than the initial one. Whereas the momentum before and after the collision still remains constant.

Thus we apply the theory of conservation of momentum.

M1V1+ M2V2 = (M1+M2)V

Thus V= 40/12 =3.33 m/s

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Equipotential lines are perpendicular to electric field lines. When a charge is moved on an equipotential line, no work is done and the potential energy remains constant.

Equipotential lines and electric field lines are related to the concept of electric potential, which is the electric potential energy per unit charge at a point in space due to a source charge.

Electric potential is measured in volts (V) and is a scalar quantity, meaning it has only magnitude and no direction.

Equipotential lines are lines in space that connect points having the same electric potential. In other words, all points on an equipotential line have the same electric potential value.

Electric field lines, on the other hand, represent the direction and strength of the electric field at every point in space. They point in the direction of the force that would be exerted on a positive test charge placed at that point in the field.

The relationship between equipotential lines and electric field lines is that they are always perpendicular to each other. This means that at any point on an equipotential line, the electric field vector is perpendicular to the line.

This can be mathematically proven using the gradient operator, which relates the electric field to the electric potential.

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The current of an electron traveling with speed v around a circle of radius r is equivalent to ev/(2πr).

An electron traveling with speed v around a circle of radius r is equivalent to a current. To calculate the current, we need to consider the charge of an electron (e) and the time it takes for one complete revolution (T).

First, find the circumference of the circle (C):
C = 2πr

Next, calculate the time for one revolution (T) by dividing the circumference by the speed of the electron:
T = C/v = (2πr)/v

Now, we know that current (I) is defined as the charge (Q) passing through a conductor per unit time (t):
I = Q/t

Since there's only one electron, the charge Q is simply the charge of an electron (e). Substitute the values of Q and T in the formula:

I = e/T = e/[(2πr)/v]

Simplify the expression:
I = ev/(2πr)

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Answer:

B

Explanation:

A is wind energy converted to mechanical energy

B is chemical energy stored in food creating energy for movement.

C electric energy to light energy

D building a campfire is chemical energy from burning wood to light energy.

Answer:

8138.16

Explanation:

hope this helps

Answer:Know the answer yet?

Explanation:

Answer:

The answer is "Option B and Option D"

Explanation:

Isopropyl alcohol has an air pressure of 22,39 units with such a water contact angle of 72,86 units.

The melting points of Isopropyl alcohol are higher than water because of the weaker forces between the previously studied.

The flatter meniscus is indeed the isopropyl ethanol so because forces between the particles are smaller.

The student should avoid blue, orange, yellow, and red light in their experiment.

The student should avoid blue, orange, yellow, and red light in their experiment if they want to measure activity at different wavelengths because these colors are absorbed in the 550 nm to 600 nm wavelength range. This means that the energy from these colors is absorbed by the chloroplasts and cannot be used for photosynthesis. Violet light, on the other hand, is not absorbed in this wavelength range so it can be used by the chloroplasts for photosynthesis. Therefore, it should not be avoided.

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Answer:

In general, the concept of output work being less than input work does not align with the laws of physics, specifically the principle of conservation of energy. According to this principle, energy cannot be created or destroyed, but it can be transformed from one form to another. Therefore, the total amount of energy in a closed system remains constant.

When considering work, which is the transfer of energy through the application of force over a distance, the input work and output work should theoretically be equal if no energy is lost to other forms, such as heat or friction. However, in real-world scenarios, various factors can result in a decrease in output work compared to input work. Some possible reasons for this disparity include:

Inefficiencies: Real systems are not perfectly efficient, and energy losses can occur due to factors like friction, heat dissipation, electrical resistance, or mechanical limitations. These losses reduce the amount of useful work obtained from the input energy.

Energy conversion: If the input work is in one form of energy (such as electrical or chemical), and the output work is in a different form (such as mechanical), energy losses can occur during the conversion process. The efficiency of the conversion process determines the amount of output work obtained.

External forces: External factors, such as resistance or opposing forces, can require additional work to overcome, resulting in a decrease in net output work compared to the input work.

It's important to note that while output work can be less than input work in certain situations due to these factors, the total amount of energy remains conserved. Energy that is not converted into useful work is typically dissipated as waste heat or other forms of energy loss.

Answer:

The output work is always less than the input work because of friction.

Explanation:

Friction is a force that opposes the relative motion of two surfaces in contact. When a machine is used, frictional forces are created between the moving parts of the machine and the surfaces they rub against.

These frictional forces require some of the input work to be used to overcome them, which reduces the amount of work that is available to do the desired task.

Answer:

1000m=1km

simple :) . . .

The normal force that the counter exert on the box of cereal in upward direction is 3.8 N.

A contact force is a normal force. A normal force cannot be applied between two surfaces that are not in contact. For instance, if a table and a box's surfaces are not in contact, they cannot exert typical pressures on one another.

In contrast, when two surfaces (such as a box and a table) come into contact, they exert a normal force on one another that is perpendicular to the contacting surfaces. The strength of this normal force will be as great as is required to stop the surfaces from piercing one another.

Given:

Weight of the box is 3.8 N.

So,  the normal force that the counter exert on the box of cereal is 3.8 N and it acts upwards.

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Answer:

45

Explanation:

The mass number is 80

Proton number is 35

A-P=n

80-35=45

When something, like a spring, is stretched, the added length is referred to as its extension.According to Hooke's law, as long as the limit of proportionality is not crossed, a spring's extension is directly proportionate to the force exerted.

Solve the problem ?

The spring's compression at the specified weight is 0.80cm.

"Your inquiry is incomplete because it appears to be lacking the information below,"

The taptap's spring has a k value of 2.4 104 N/m.

the settings provided;

Each of the 27 people weighs 69 kg.

Each of the three goats weighs 15 kg.

Each of the five hens weighs 3 kg.

The weight of the bananas is 25 kg

The taptap's total mass, which includes every passenger, is computed as;

the people's combined mass is 27 x 70 or 1960 kg.

The goats' combined mass is 3 x 15 =45 kg.

The birds' combined mass is equal to 5 x 3 = 15 kg.

The bananas weigh a total of 25 kilograms

The extension of the spring

=   1960×9.8/2.4×104

= 19208/24000

=  0.80 cm

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The distance between the masses is 1.14 x 10⁴ m.

option B.

The distance between the masses is calculated by applying Newton's law of universal gravitation.

Fg = Gm₁m₂ / R²

where;

R² = ( Gm₁m₂ ) / ( F )

R = √ [ ( Gm₁m₂ ) / ( F ) ]

R = √ [ ( 6.67 x 10⁻¹¹ x 7.86 x 10¹¹ x 1.12 x 10⁹ ) / ( 4.54 x 10² ) ]

R = 1.14 x 10⁴ m

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Answer:

Identify the object to be analyzed. For some systems in equilibrium, it may be necessary to consider more than one object. Identify all forces acting on the object. Identify the questions you need to answer. Identify the information given in the problem. In realistic problems, some key information may be implicit in the situation rather than provided explicitly.

Explanation:

Identify the object to be analyzed. For some systems in equilibrium, it may be necessary to consider more than one object. Identify all forces acting on the object. Identify the questions you need to answer. Identify the information given in the problem. In realistic problems, some key information may be implicit in the situation rather than provided explicitly.