a hockey puck is hit on a frozen lake and starts moving with a speed of 13.20 m/s. exactly 5.6 s later, its speed is 6.60 m/s. what is the puck's average acceleration?

The total distance travelled during the vehicle's journey as found from the speed-time graph is 6.125 m

V = d / t

V = ( u + v ) / 2

V = Average Speed

d = Distance

t = Time

u = Initial velocity

v = Final velocity

During the first 0.5 s, u = 0 and v = 1 m / s.

d = ( 0 + 1 ) * 0.5 / 2

d = 0.25 m

During the next 0.5 s, u and v are equal meaning constant velocity ( V = 1 m / s ).

d = 1 * 0.5

d = 0.5 m

During the next 1 s, u = 1 m / s and v = 1.5 m / s.

d = ( 1 + 1.5 ) * 1 / 2

d = 1.25 m

During the next 2.5 s, u and v are equal meaning constant velocity ( V = 1.5 m / s ).

d = 1.5 * 2.5

d = 3.75 m

During the next 0.5 s, u = 1.5 m / s and v = 0.

d = ( 1.5 + 0 ) * 0.5 / 2

d = 0.375 m

Total distance travelled is the sum of all the individual distances calculated.

Total distance travelled = 0.25 + 0.5 + 1.25 + 3.75 + 0.375

Total distance travelled = 6.125 m

Therefore, the total distance travelled during the vehicle's journey as found from the speed-time graph is 6.125 m

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Answer:

Permissive - allowing or characterized by great or excessive freedom of behavior.

Explanation:

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

Physical properties such as color, shape, size, weight, odor, melting point, boiling point, and density can be observed without destroying the substance.

Physical properties are characteristics of a substance that can be observed and measured without changing the substance's chemical composition. Examples of physical properties include color, density, hardness, melting point, boiling point, and electrical conductivity. These properties are determined through experiments and/or observations. Physical properties can be used to identify and classify a material. They can also be used to differentiate between different forms of the same material, such as different allotropes of the same element. Physical properties are also important for understanding how materials interact with each other and how they respond to the environment.

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The value of e for the given process can be calculated using the First Law of Thermodynamics, which states that the change in internal energy (ΔU) of a system is equal to the heat (Q) added to the system minus the work (W) done by the system. In this case, the value of e is -0.57 kJ.

The equation for the First Law of Thermodynamics is:

ΔU = Q - W

Given:

Q = -1.41 kJ (heat released by the system)

W = -1.98 kJ (work done by the system)

Substituting the values into the equation, we can calculate the change in internal energy:

ΔU = -1.41 kJ - (-1.98 kJ)

= -1.41 kJ + 1.98 kJ

= 0.57 kJ

Since e represents the change in internal energy, the value of e for this process is 0.57 kJ. However, it is worth noting that the negative sign indicates that the process is exothermic, meaning that heat is released by the system. Therefore, the value of e is -0.57 kJ.

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Answer: The SI units of the proportionality constant G in Newton's law of universal gravitation are:

SI Unit of G: N m^2/kg^2

Where:

- N represents the unit for force, which is the Newton.

- m represents the unit for distance, which is meter.

- kg represents the unit for mass, which is kilogram.

So, the SI unit of G is N m^2/kg^2, which can also be written as Nm^2kg^-2.

The SI unit of the proportionality constant G is cubic meters per kilogram-second squared (m³ / kg s²)

The equation for Newton's law of universal gravitation is:

F = G × (M × m) / r²

where:

F - is the force of attraction between two objects

M - and m are the masses of the two objects

r- is the distance between their centers of mass

G - is the gravitational constant.

To find the SI units of the proportionality constant G, we can rearrange the equation as:

G = F × r² / (M × m)

Substituting the units of the other quantities:

F has the SI unit of Newton (kg m/s²)

r has the SI unit of meter (m)

M and m have the SI unit of kilogram (kg)

So, the SI units of the proportionality constant G are:

G = N × m² / (kg × kg)

Simplifying the expression, we get:

G = m³ / (kg × s²)

Therefore, the SI unit of the proportionality constant G is cubic meters per kilogram-second squared (m³ / kg s²)

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Answer to the first question-

Ans- The net force of the runner will be 280 N

Data obtained from the question-

The net force of the runner could be obtained by -

Net force = Exerting force - resistance force

Net force = 305 - 35

Net force = 280 N

So we can conclude that the runner's net force is 280 N

Answer to the second question-

Ans- The book will stay at rest

Explanation-

As we can see that the pushing force applied to the book is 3 N and the frictional force applied by the table is 7 N, so due to the overpowering frictional force in the opposite direction of the pushing force, the book will remain on its place until and unless a pushing force more significant than 7 N is applied on the book, in that case, the book will start moving in the right direction or in the direction of the pushing force.

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Answer:

Newton Second

Explanation:

The SI unit of impulse in Newton Second (N.s)

Answer:

Water is omnipresent in our environment on a global scale: in the seas, oceans, lakes, rivers, in glaciers and ice floes... but also in the atmosphere (clouds,

Rain, hail, snow, water vapor...). Water is also omnipresent in our environment

Daily: water to drink, to cook, to wash...

Explanation:

Divergent is your answer.

have a good day.

A macromolecule that can exist as linear or cyclized, where it has a polar "head" group and a majority nonpolar "tail" group is lipid.

Fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, phospholipids, and other naturally occurring molecules are included in the large class of molecules known as lipids. Lipids have a variety of uses, including energy storage, signaling, and serving as structural elements of cell membranes. Small molecules that are hydrophobic or amphiphilic can be widely referred to as lipids. Some lipids can form vesicles, multilamellar/unilamellar liposomes, or membranes in an aqueous environment due to their amphiphilic nature. Ketoacyl and isoprene groups, two different kinds of biochemical "building-blocks," are the source of all or a portion of biological lipids. This method allows for the classification of lipids into eight different groups: sterol lipids, prenol lipids, glycerolipids, sphingolipids, and polyketides (formed by condensation of ketoacyl subunits) (derived from condensation of isoprene subunits).

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Answer:

hope this help pls give me brainless

The speed of the volleyball with a mass of 0.28 kg and height of 12 m will be 15.336 m/s.

Speed is the rate of change of distance of an object with respect to time. Speed is a scalar quantity as it has only magnitude and no direction. The SI unit of speed is meter per second (m/s).

PE = KE

Potential Energy = Kinetic energy

mgh = 1/2 mv²

where, m is the mass of object,

g is the acceleration due to gravity,

h is the height of the object,

v is the speed of the object

gh = 1/2v²

2gh = v²

v = \(\sqrt{2gh}\)

v = \(\sqrt{2(9.8)(12)}\)

v = \(\sqrt{235.2}\)

v = 15.336 m/s

Therefore, the speed of the volleyball will be 15.336 m/s.

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Answer:

The answer is 160 N

Explanation:

I did the test

Hope this helps :)

When resistor and capacitor are connected in series:

the maximum voltage across the capacitor is 10 V.

the maximum charge on the capacitor is 10 µC

the time it takes until the capacitor has a potential difference of 5 V is about 0.69 seconds.

When the capacitor is disconnected from the battery and the resistor and connected to the resistor only, the charge on the capacitor is `Qc = 10*e^(-t/RC)`and the voltage across it is Vc = 10*e^(-t/RC)

When resistor and capacitor are connected in series:

1) Maximum voltage across the capacitor:

The maximum voltage across the capacitor is given by the formula:

`Vc = E(1 - e^(-t/RC))`

Where Vc is the voltage across the capacitor, E is the voltage of the battery, t is the time elapsed, R is the resistance, and C is the capacitance of the capacitor.

Substituting the given values into the formula, we have:

`Vc = 10(1 - e^(-t/RC))` `Vc = 10(1 - e^(-10t))`

Therefore, the maximum voltage across the capacitor is 10 V.

2) Maximum charge on the capacitor:

The maximum charge on the capacitor is given by the formula:

`Qc = C*Vc`

Where Qc is the charge on the capacitor, C is the capacitance of the capacitor, and Vc is the maximum voltage across the capacitor.

Substituting the given values into the formula, we have:`

Qc = 1*10`

Therefore, the maximum charge on the capacitor is 10 µC.

3) Time until the capacitor has a potential difference of 5 V:

The potential difference across the capacitor at any time t is given by the formula:

`Vc = E(1 - e^(-t/RC))`

Substituting the given values into the formula, we have:

`5 = 10(1 - e^(-t/RC))` `0.5 = 1 - e^(-t/RC)` `e^(-t/RC) = 0.5

`Taking natural logarithms of both sides, we get:

`-t/RC = ln(0.5)` `t = -RC*ln(0.5)`

Substituting the given values into the formula, we get:

`t = -1000*1*10^-6*ln(0.5)`

Therefore, the time it takes until the capacitor has a potential difference of 5 V is about 0.69 seconds.

4) Discharge of the capacitor through the resistor:

When the capacitor is disconnected from the battery and the resistor and connected to the resistor only, it starts to discharge through the resistor. The charge on the capacitor and the voltage across it decrease exponentially with time, following the formula:`

Qc = Q0*e^(-t/RC)`

`Vc = V0*e^(-t/RC)`

Where Q0 and V0 are the initial charge and voltage on the capacitor when it is disconnected from the battery, respectively.

Substituting the given values into the formula, we have:`

Qc = 10*e^(-t/RC)`

`Vc = 10*e^(-t/RC)

`Where Qc and Vc are the charge and voltage on the capacitor at any time t, respectively.

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To determine the work done on the elevator car, we can use the formula:

Work = Force x Distance x Cos(theta)

where the force is the tension in the cable, and theta is the angle between the direction of the force and the direction of motion (which is zero in this case since the elevator moves vertically).

Since the elevator is lifted at a constant speed, we know that the net force acting on it is zero. Therefore, the tension in the cable must equal the weight of the elevator plus the frictional force:

Tension = Weight + Frictional Force

Tension = (1400 kg)(9.8 m/s^2) + 1275 N

Tension = 13730 N

Using this tension value and the given distance of 36 m, we can calculate the work done on the elevator:

Work = (13730 N)(36 m)(Cos(0))

Work = 494280 J

Therefore, the work done on the elevator car to lift it 36 m is 494,280 J, assuming a constant frictional force of 1275 N.

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Force = mass × acceleration

Now, keeping this formula in mind you can find the mass as follows;

= 35 = m × 3

= 35/3 = m

= 11.6 kg = m

And yeah its done!:)

When a light ray propagating in vacuum contains both 600nm light and 400 nm light and is incident on top of a glass cube then 400nm light travels faster than the 600nm light so the answer is (b).

The speed of light in a medium is dependent on the refractive index of the medium, which is a function of the wavelength of the light and the properties of the medium. In general, light with a longer wavelength will travel slower in a medium than light with a shorter wavelength. This is because the longer wavelength light experiences more refraction, or bending, in the medium.

In the case of a glass cube, both the 400 nm and 600 nm light will slow down as they travel through the glass. The 400 nm light will slow down more than the 600 nm light, meaning it will experience more refraction and bend more than the 600 nm light. Therefore, the answer is (b) the 400nm light travels faster than the 600nm light.

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Answer:

Tstring = 343.35 [N]

Explanation:

Since the block is in equilibrium, we can say that the sum of the forces on the Y-axis or vertical is equal to zero.

∑Fy = 0

\(T_{string}-W=0\)

where:

Tstring = tension of the string [N]

W = weight of the block [N]

And the weight can be calculated multiplying the mass of the block by the gravity acceleration.

Now replacing:

\(T_{string}=m*g\\T_{string}=35*9.81\\T_{string}=343.35[N]\)

Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=\(1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}\)=\(7*10^{14}\) m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

\(X=u[2y/a]^{1/2}\)

=\(4*10^6[2*2*10^{-2}/7*10^{14}]^{1/2}\)

=\(3*10^{-2}\)= 3 cm

This filter picks out a specific polarization, so it makes a lot more sense to call it a polarizer than anything else.  (C)

This question is a lot like asking "What color is an orange ?".

Responder:

100m

Explicación:

Dirección total de la persona de recogida hacia el este = 300 m + 100 m (ya que caminó 100 m hacia el este cuando el conductor lo llamó)

Dirección total de la persona de recogida a través del este = 400 m

Para el súper conductor, fue 800 m hacia el este y regresa por (800-300) m cuando vio que había pasado a la persona de recogida por 300 m. El desplazamiento total del uber es 800-300 = 500 m

El desplazamiento total del uber a la persona que recoge es la diferencia en su desplazamiento, es decir, 500-400 = 100 m.

SWOT Analysis Strengths- Paley’s Products has a low overhead cost with the company operating at a high level of efficiency, resulting in competitive pricing.- They have a team of experienced employees who have worked in the industry for several years.- They have a variety of products in the portfolio that can satisfy customers from different sectors.- They are reputable and have a loyal customer base.Weaknesses- They have been slow to adopt new technology, and this may be a disadvantage to the company.- Limited marketing and sales promotion are affecting their sales revenue.-

They depend on a few key customers for the bulk of their sales revenue, leaving them vulnerable to market changes.Opportunities- Expansion of the product line to include unique products.- The establishment of strategic partnerships with other businesses in the industry.- Exploration of new markets, such as international markets.- Improvement of marketing techniques to increase brand awareness.Threats- Changes in consumer preferences towards environmentally friendly products.- Increase in competition from other businesses in the industry.- Fluctuating market prices for raw materials that may lead to price increases.

Strategic Actions to be taken by Paley Products1. Development of an E-commerce platform to allow online transactions with customers. The E-commerce platform will enable Paley to reach a wider customer base, expand its reach, and increase sales revenue.2. Investment in the research and development of new environmentally friendly products. Paley will remain competitive and cater to the needs of consumers who prefer green products.3. Establishment of strategic partnerships with other businesses in the industry to leverage the strength of other companies in the industry and to develop new products or increase market share.4. Improvement of marketing techniques to increase brand awareness and improve visibility. A marketing strategy that incorporates social media and other digital channels can help promote the brand to potential customers.5. Expansion into international markets. This will enable Paley to diversify its customer base and generate more revenue. Paley can start by targeting nearby countries, then expand globally as they gain more experience and financial stability.

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Answer:

Vector has magnitude and direction, scalar only has magnitude.

Answer:

A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector

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:

43.3 m/s.

Explanation:

Assuming the potential energy is due to the gravitational potential energy, we can use the conservation of energy to find the kinetic energy:

Total energy = Potential energy + Kinetic energy

Kinetic energy = Total energy - Potential energy

Kinetic energy = 300 J - 40 J = 260 J

However, we need to know the mass of the object to convert the kinetic energy to velocity. We can use the potential energy to find the mass:

Potential energy = mgh

40 J = m(9.81 m/s^2)(300 m)

m = 0.137 kg

Now we can use the kinetic energy to find the velocity:

Kinetic energy = (1/2)mv^2

260 J = (1/2)(0.137 kg)v^2

v^2 = (2*260 J) / 0.137 kg

v = 43.3 m/s (rounded to one decimal place)

Therefore, the kinetic energy is 260 J and the velocity of the object when it reaches the ground is 43.3 m/s.

The energy that is transferred in this time is E = 1.365 J.

To calculate Charge using formula,

Q = I x t

Q = 0.13A x 35 s

Q = 4.55 C

To calculate energy transferred,

E = Q x V

where,

Q is charge

V is potential difference

So by given values,

E = 4.55  x 0.30

E = 1.365 J

In order to perform work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is a quantitative property. Energy is a conserved resource; according to the law of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.

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Answer:

31556736

Explanation:

Since there are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.24 days in a year, then you multiply all of those.

60*60*24*365.24 =

31556736

Answer:

Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.

Answer:

Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.

Answer:

(Example Person) has to push hard to get the skateboard started, but once it begins moving, it takes much less effort to keep it rolling over the smooth, flat pavement. In fact, if (Example Person) tries to stop the rolling skateboard, it may take as much effort to stop it as it did to start it rolling in the first place.

Explanation:

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