A lady wearing high heels shoes has a weight of 550 N. area of the sole of each of the lady's shoes is 1.25 cm ^2 calculate the pressure exerted by the lady.​

The acceleration due to gravity of the planet X is 1 m/s².

The given parameters;

The acceleration due to gravity is calculated as follows;

\(h = ut - \frac{1}{2} gt^2\\\\100 = 15(10) - (0.5\times 10^2)g\\\\100 = 150 - 50g\\\\50g = 150-100\\\\50g = 50\\\\g = 1 \ m/s^2\)

Thus, the acceleration due to gravity of the planet X is 1 m/s²

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canoeing is a popular paddle sport with a long history bottom can go faster and is easier to paddle because its shape reduces friction.

Flat. The most common shape found in basic, recreational canoes. Canoes with a flat hull shape have great primary stability (they're difficult to tip when upright and on calm water), but when they're put on edge, that stability decreases.

Newton's Second Law of Motion explains one set of factors that affect how fast your boat will move through the water. The lighter your boat and the stronger your paddler, the faster your boat will go. opposite reaction. In your boat, your paddler will push his/her paddle into the water.

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canoeing is a popular paddle sport with a long history bottom can go faster and is easier to paddle because its shape reduces friction.

Flat. The most common shape found in basic, recreational canoes. Canoes with a flat hull shape have great primary stability (they're difficult to tip when upright and on calm water), but when they're put on edge, that stability decreases.

Newton's Second Law of Motion explains one set of factors that affect how fast your boat will move through the water. The lighter your boat and the stronger your paddler, the faster your boat will go. opposite reaction. In your boat, your paddler will push his/her paddle into the water.

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Answer:

like this

Explanation:

Sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.

We know that sound is a wave whose medium of propagation isthrough matter. Hence, sound move faster in a dense object than in a less dense object.

As such, sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.

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The impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

The Newton's laws of motion lay the foundation for dynamics. According to Newton's second law, the rate of change of momentum is directly proportional to the impressed force.

Hence, as the impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

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Answer:

silk , it is a type of fibre

The acceleration of block B is 4.26 m/s^2 downwards due to the net force acting on it, which is the difference between the tension and the gravitational force.

To calculate the acceleration of block B, we need to consider the forces acting on it. Block B is connected to block A by a cable that has a tension of 3 N. Block B is also subject to a gravitational force of 39.2 N (4 kg x 9.8 m/s^2).

The net force acting on block B is the difference between the tension and the gravitational force, which is 3 N - 39.2 N = -36.2 N. Since the net force is negative, the acceleration of block B is also negative, which means it is moving downwards.

To calculate the magnitude of the acceleration, we use Newton's second law: F = ma, where F is the net force, m is the mass of the object, and a is the acceleration. Solving for a, we get a = F/m = -36.2 N / 4 kg = -9.05 m/s^2. The negative sign indicates that the acceleration is downwards.

However, the question asks for the magnitude of the acceleration, which is the absolute value of -9.05 m/s^2, which is 9.05 m/s^2. Therefore, the acceleration of block B is 4.26 m/s^2 downwards.

In conclusion, the acceleration of block B is 4.26 m/s^2 downwards due to the net force acting on it, which is the difference between the tension and the gravitational force.

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Mass of the planet = 9.59 * 10²⁴ Kg

Given that,

Mass of the object, m = 0.5 kg

Weight of the object, W = 20 N

Radius of the planet, r = 4*10⁶ m

The weight of an object is given by :

W = m*g

g is the acceleration due to gravity on the surface of Planet

g = W/m

  = 20/0.5

  =40 m/s²

The expression for g is given by :

g = GM/r²

M= (r²g) / G

M = 9.59 * 10²⁴ Kg

So, the mass of the planet X is 9.59 * 10²⁴ Kg. Hence, this is the required solution.    

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Answer:52.5

Explanation:

You pull a sled with a package on it across a snow-covered flat lawn. If you apply a force of 65.1 N to the sled, it accelerates at 1.24 m/s2. The combined mass of the package and the sled m = 52.50 kg

The given data to find Mass,

The force applied to the sled, F = 65.1 N

Acceleration of the sled, a = 1.24 m/s²

Forces are defined by both strength and direction.

Force is a vector quantity. It is a quantity that is described by Magnitude and Direction. The strength of a force is its magnitude and the direction, well it is the direction the magnitude is applied on the object.

We need to find the combined mass of the package and the sled. Let it is m. Using definition of force as follows :

F = ma

m = F/a

m = 65.1 /1.24

Mass, m = 52.5 Kg.

If you apply a force of 65.1 N to the sled, it accelerates at 1.24 m/s2. The combined mass of the package and the sled m = 52.50 kg

Hence, Option C is the correct answer.

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Manhattan distance is a popular heuristic function for sliding-tile puzzles. It is calculated by tallying the number of moves along the grid that each tile takes to move away from its intended position.

Manhattan distance is a popular heuristic function for sliding-tile puzzles. It is calculated by tallying the number of moves along the grid that each tile takes to move away from its intended position. The obvious option for a heuristic function is the Euclidean (straight-line) distance, which, as far as we are aware, can never underestimate the distance but might do so if there is a target obstacle to avoid on the way there.

Any problem-solving strategy that employs a practical approach or numerous short cuts in order to provide answers that might not be ideal but are adequate given a constrained timeline or deadline is known as a heuristic, or heuristic technique.

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20 drops per millilitre. Example: To convert 15 drops to millilitres, multiply by 0.05 to get 0.75 mL.

A drop is a unit of volume commonly used in medicine and cooking. The volume of a single drop can vary depending on factors such as the size of the dropper or the liquid being measured, but a commonly accepted standard is that one drop is equal to approximately 0.05 milliliters (mL).

It's important to note that relying on drops as a precise measurement can be problematic, as variations in dropper size, liquid viscosity, and other factors can cause significant variations in the actual volume of a drop. For this reason, it's often more accurate to use graduated measuring devices like syringes or graduated cylinders when precise measurements are required.

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U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

Resistance is a concept in physics that measures the opposition to the flow of electric current, heat, light, sound, or any other form of energy or matter. It is the measure of how much an object, material, or system resists the flow of electric current, heat, light, sound, or any other form of energy or matter.

a) U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

b) U₁ = 12 V. Since the generator is providing a constant voltage of 24 V across its terminals, the voltage across the terminals of (L₁) will be half of this, i.e. 12 V. As the lamps are identical, the current I' through the circuit will also be 0.6 A.

c) (L₁) may burn out due to the large amount of current it is carrying. If the current is too high, it may exceed the rated capacity of the lamp and lead to its failure.

d) (L₁) does not burn out because the circuit includes a fuse. The fuse is designed to break the circuit in the event of an excessive current, thus protecting the lamp from burning out. When the fuse blows, the circuit is broken and the lamp will be off.

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Answer:The answer is B: RI/V

Explanation: Because V is divided by I and multiplied by R

Radiative energy is the energy carried by light.

What is radiative energy?

Radiative energy is the energy carried by light. It is a form of energy that can be transmitted through space without requiring a medium for it to move through. Radiative energy can come from natural sources like the sun or artificial sources like light bulbs.

Radiative energy is important for a variety of reasons. For one thing, it is the primary source of energy for many living organisms on Earth, particularly plants. Energy from the sun helps plants photosynthesize and produce food that they can use to grow and reproduce.

Radiative energy is also important for human life. It is used in a variety of ways, including in the form of light for illuminating spaces and in the form of heat for cooking and keeping warm. Understanding the nature and properties of radiative energy is important for a wide range of scientific and technological fields.

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The magnitude of the angular momentum of the point mass about the center of the circle is \($7.1676\ \text{kg}\ \text{m}^2/\text{s}$\).

The angular momentum of a rotating object is defined as the product of its moment of inertia and its angular velocity with respect to an axis of rotation. In this case, we have a point mass of 3.2 kg traveling around a circle of radius 0.45 m with an angular velocity of 11.0 rad/s.

To calculate the angular momentum of the point mass about the center of the circle, we first need to find its moment of inertia. For a point-mass rotating around an axis passing through its center of mass, the moment of inertia is simply the mass times the square of the radius, i.e., \(I = mr^2\). Thus, the moment of inertia of our point mass is:

\(I = (3.2 kg) \times (0.45 m)^2 = 0.6516 kg m^2\)

Now, we can calculate the angular momentum L of the point-mass about the center of the circle using the formula:

L = I x w

where w is the angular velocity of the point mass. Plugging in the values we have:

\($L = (0.6516 \text{ kg m}^2) \times (11.0 \text{ rad/s}) = 7.1676 \text{ kg m}^2/\text{s}$\)

This value indicates the amount of rotational motion the point mass possesses, and it is conserved as long as there are no external torques acting on the system.

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Explanation:

Even though the man exerts force on the wall, the wall doesn't move . Work done= Force applied* displacement and since the displacement of the wall is zero., work done is also zero.

Answer:

The water is at the top because when the water is stored at the top it does not need as much energy to get it to flow because it will be flowing down and be affected by gravity to make the water pressure.

Answer:

The water is at the top because when the water is stored at the top it does not need as much energy to get it to flow because it will be flowing down and be affected by gravity to make the water pressure.

Explanation:

When a material is reflective, it would cause the light that meets it to bounce off while a transparent material would make the light to pass through it.

Light is a form of energy that produces a sensation that is visible to the optical eye. We know that a material is said to be transparent if the material can allow light to pass through it. A material is said to be reflective when it bounces off the rays of light that fall on it.

We can see that when light interacts with the transparent material, the light can pass through the material. If the light interacts with the reflective material then the light rays are seen to bounce off the light rays.

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The gas is compressed to 1/7 of its original volume, but since the process is horizontal, there is no change in volume. Hence, no work is done during the process A to B.

Therefore, the work done (WAB) during the process A to B is zero.

The work done by or on the gas during the process A - B can be calculated using the following formula: WAB = -∫PdV where P = pressure, and V = volume. To calculate WAB, we need to calculate the integral of PdV. Since B is represented by a horizontal line, the pressure P is constant. Therefore, WAB = -P∫dVWhere, ∫dV is the integral of dV from the initial volume Vi to the final volume Vf.

The gas is compressed from state A to state B. Therefore, the initial volume Vi = 7.0 dm³ and the final volume Vf = 1/7 * 7.0 dm³ = 1.0 dm³.WAB = -P ∫dV = -P(Vf - Vi)WAB = -200 kPa (1.0 dm³ - 7.0 dm³) = 1200 JThe work done by the gas during the process A - B is -1200 J.

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The mass of the mud sitting above a 4.2 m2 area of the valley floor is approximately 9,481.59 kilograms.

The first step is to calculate the volume of the mud that slipped into the valley. The volume can be determined by multiplying the dimensions of the section that slipped: 1.5 km (width) × 0.61 km (height) × 0.63 m (depth) = 0.57435 cubic kilometers. Next, we need to convert the volume to cubic meters since the mass of the mud is given in kilograms per cubic meter.

There are 1,000,000 cubic meters in one cubic kilometer, so the volume in cubic meters is 0.57435 × 1,000,000 = 574,350 cubic meters. To find the mass of the mud sitting above a 4.2 m2 area of the valley floor, we need to calculate the mass per unit area. This can be done by dividing the total mass of the mud by the total surface area of the valley.

The surface area of the valley is 0.34 km × 0.34 km = 0.1156 square kilometers. Converting this to square meters, we get 0.1156 × 1,000,000 = 115,600 square meters. Finally, we divide the total mass of the mud by the surface area to find the mass per unit area: 574,350 cubic meters × 1900 kg/cubic meter ÷ 115,600 square meters = 9,481.59 kg/m2.

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Answer:

Acceleration and the distance traveled are 0.9 m/s² and 4.05 m

Explanation:

Given that,

Initail speed, u = 0

Final speed, v = 2.7 m/s

Time, t = 3 s

To find,

The acceleration and distance traveled.

Solution,

Acceleration is change in speed per unit time

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{2.7-0}{3}\\\\a=0.9\ m/s^2\)

Let s is the distance,

\(d=ut+\dfrac{1}{2}at^2\\\\\because u=0\\\\d=0+\dfrac{1}{2}\times 0.9\times 3^2\\\\d=4.05\ m\)

So, acceleration and the distance traveled are 0.9 m/s² and 4.05 m

The height at which the diver must jump in other to hit the water with a speed of 24 m/s is 29.4 m.

The height of the player above the ground can be calculated using the formula below.

Where:

From the question,

⇒ Given:

⇒ Substitute these values into equation 1

⇒ Solve for s.

Hence, The height at which the diver must jump in other to hit the water with a speed of 24 m/s is 29.4 m.

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Answer:

360 degrees is one full rotation starting at zero

it take 2 s  to the flag to rotate once in a full circle  with 3 rad/s of angular velocity.

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

In this problem we have to calculate time, but the angular velocity id not given.

Consider the angular velocity is 3 rad/s.

Given,

Angular displacement θ = 2π

angular velocity ω = 3 rad/s

Time t = ?

Time = θ/ω

Time = 2π/3 rad/s = 2 s

Hence the answer is 2s.

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Answer:

renewable are fuels that can be reused while non renewable are fuels that can not be used again

Answer:

1) The Mechanical Advantage of the lever is 3

2) The velocity ratio of the lever is 4

3) The efficiency of the lever is 75%

Explanation:

A lever is a simple machine that is used to lift a heavy load with a little effort or force

The mechanical advantage is the ratio of the force output to the force input

The given parameters of the lever are;

The length of the lever = 1 m

The weight of the load (force output), \(F_r\) = 600 N

The effort applied (force input), \(F_e\) = 200 N

1) The Mechanical Advantage, MA of the lever is given as follows;

\(MA = \dfrac{F_r}{F_e} = \dfrac{600 \ N}{200 \ N} = 3\)

The Mechanical Advantage, MA of the lever = 3

2) The velocity ratio, V.R., is the ratio of the distance moved by the effort, \(L_e\), to the distance moved by the load, \(L_r\)

For the lever, we have;

The distance of the load from the fulcrum, \(L_r\) = 20 cm = 0.2 m

Therefore, we have;

The distance of the effort from the fulcrum, \(L_e\) = 1 m - 0.2 m = 0.8 m

From which we have;

\(V.R.= \dfrac{L_e}{L_r} = \dfrac{0.8 \ m}{0.2 \ m} = 4\)

The velocity ratio of the lever = 4

3) The efficiency, η, is given as follow;

\(\%Efficiency, \, \eta = \dfrac{M.A.}{V.R.} \times 100 = \dfrac{3}{4} \times 100 = 75\%\)

The efficiency of the lever is 0.75 or 75%.

Explanation:

The length of the lever = 1 m

The weight of the load (force output), F_rF

r

= 600 N

The effort applied (force input), F_eF

e

= 200 N

1) The Mechanical Advantage, MA of the lever is given as follows;

MA = \dfrac{F_r}{F_e} = \dfrac{600 \ N}{200 \ N} = 3MA=

F

e

F

r

The length of the lever = 1 m

The weight of the load (force output), F_rF

r

= 600 N

The effort applied (force input), F_eF

e

= 200 N

1) The Mechanical Advantage, MA of the lever is given as follows;

MA = \dfrac{F_r}{F_e} = \dfra

=

200 N

600 N

=3

The Mechanical Advantage, MA of the lever = 3

2) The velocity ratio, V.R., is the ratio of the distance moved by the effort, L_eL

e

, to the distance moved by the load, L_rL

r

For the lever, we have;

The distance of the load from the fulcrum, L_rL

r

= 20 cm = 0.2 m

Therefore, we have;

The distance of the effort from the fulcrum, L_eL

e

= 1 m - 0.2 m = 0.8 m

From which we have;

V.R.= \dfrac{L_e}{L_r} = \dfra

The distance of the load from the fulcrum, L_rL

r

= 20 cm = 0.2 m

Therefore, we have;

The distance of the effort from t

V.R.= \dfrac{L_e}{L_r} = \dfrac{0.8

L

e

=

0.2 m

0.8 m

=4

The velocity ratio of the lever = 4

3) The efficiency, η, is given as follow;

\%Efficiency, \, \eta = \dfrac{M.A.}{V.R.} \times 100 = \dfrac{3}{4} \times 100 = 75\%%Efficiency,η=

V.R.

M.A.

×100=

4

3

×100=75%

The efficiency of the lever is 0.75 or 75

Answer:

Gravitational, Electrical, Magnetic, elastic potential, and chemical energy

Explanation:

When I did some research, I found 5 types of potential energy, so list the four that either came up in your lesson or are familiar to you:

Gravitational, Electrical, Magnetic, elastic potential, and/or chemical energy.

Answer:

a concave lens forms a smaller, real image. { a p e x :)) }

Explanation:

hey, friend! this is the answer, but make sure that, next time, you include the diagram to make it easier for us to help you, okay?

A concave lens forming a larger real or virtual image and Concave mirrors form both real and virtual images. therefore all statements are correct. Therefore these can be interpreted by using Ray diagram.

A ray diagram is a diagram that shows path taken by light in order to see a point on the image of an object. Ray diagram uses lines with arrows to show reflected and incident ray.

A concave lens is a lens that diverges a straight light beam from the source to a diminished, upright, virtual image. It can form both real and virtual images. concave lens has curve on both side. The lens having only one side plane and other is curved inside, the les is called as planoconcave lens.

Concave mirror can form both virtual and real image that depends on the distance between the mirror and object. We get virtual and magnified image When the object is placed very close to the mirror. when distance between the object and mirror is increased, image gets diminished and real.

Both concave lens and mirror form both real and virtual images that's depend on the distance.

Hence all statements are correct.

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