Using the illustration below, let's say the first kid is pushing with the force of 75N to the right and the second kid is pushing with a force fo 130 N to the right. What would the net force be on the kid and the scooter?

Answer:

Dog2 has most kinetic energy .

B:324j

As the plunger of a sealed hypodermic needle is slowly pulled out, the air pressure inside the syringe decreases. This is because the volume of the syringe increases.

According to Boyle's Law, the pressure and volume of a gas are inversely proportional at a constant temperature. When the plunger is pulled out, the volume of the syringe increases while the amount of air inside remains constant. As the volume increases, the same amount of air molecules now occupy a larger space, resulting in a decrease in pressure. In other words, the pressure decreases because the gas molecules have more room to move around. Therefore, pulling the plunger of a sealed hypodermic needle slowly out causes a decrease in air pressure inside the syringe.

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Answer:

Number of Wire Turns in the Coil.

Explanation:

The greater the number of turns of wire in the coil, the greater the inductance. Fewer turns of wire in the coil results in lesser inductance. More coils of wires indicate a greater amount of magnetic field force for a given amount of coil current.

Answer:

4000 J

Explanation:

KE = (1/2)(m)(v^2)

KE = .5*500*(4^2)

KE = 4000 J

If half of the sun's mass were to suddenly disappear, the gravitational force exerted by the sun on the planets, including Earth, would decrease.

This would cause the Earth's orbit to change, as it would no longer be held in its current position by the same gravitational force. The exact nature of this change would depend on a variety of factors, including the velocity and direction of the Earth at the time of the mass loss, and the gravitational influences of other bodies in the solar system.

However, it is likely that the Earth's orbit would become more elliptical, meaning that it would be less circular and more stretched out. This could potentially have significant implications for the Earth's climate and seasons, as well as for the stability of the entire solar system.

If half of the Sun's mass were to suddenly disappear, Earth's orbit would be affected significantly. The gravitational force between the Earth and the Sun, which keeps Earth in its orbit, would be reduced. As a result, Earth's orbital path would likely become more elliptical, causing increased variations in temperature and climate. Additionally, the Earth could potentially move further away from the Sun, leading to a colder average temperature on the planet.

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The mass of the ball remains constant, the impulse for a single trial would be the same even if the ball bounced back to its original height, since the impulse is zero.

Impulse is defined as the product of force and time, and it is represented as

I = FΔt,

where

I is the impulse,

F is the force,

Δt is the change in time.

Impulse also equals the change in momentum. Therefore, impulse can be calculated by using the following equation:

I = m * (Vf - Vi),

where

I is the impulse,

m is the mass of the object,

Vf is the final velocity,

Vi is the initial velocity.

Therefore, the impulse for a single trial would be the same if the ball bounced back to its original height (had a perfectly elastic collision with the floor).

As we know, Impulse is the change in momentum of an object, and the momentum is the product of mass and velocity. Mathematically,

Impulse = change in momentum

I = m * Δv

The product of the mass of an object and the change in its velocity is defined as the Impulse. This means that the impulse will be equal to the change in the velocity of the object multiplied by its mass.

The formula for the impulse in the case of an object colliding with a surface can be written as:

I = Ft

where,

Impulse (I) is equal to the force (F) applied on the object multiplied by the time period (t) for which the force is applied.

Now, let's discuss the second part of your question,If the ball bounced back to its original height, which means it has a perfectly elastic collision with the floor. So, we know that the perfectly elastic collision is the collision in which the two objects collide and bounce off each other with no loss of kinetic energy. In this case, the ball will rebound back with the same velocity as before, and the momentum will change, but its value will be the same.

Now we can use the impulse-momentum theorem and the conservation of energy to solve this problem:

According to the impulse-momentum theorem, the impulse experienced by the ball is equal to the change in momentum of the ball.

Therefore, we can write:

Impulse = Change in Momentum

I = m * (Vf - Vi)

Since the ball bounces back to its original height, the final velocity (Vf) is equal to the initial velocity (Vi). This means that the change in velocity (Δv) is equal to zero. Therefore, the impulse is also equal to zero. Since the mass of the ball remains constant, the impulse for a single trial would be the same even if the ball bounced back to its original height.

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If you are moving into a wave, its frequency will appear to you to be higher, while if you are traveling in the same direction as the waves, their frequency will appear to be lower.

What is meant by frequency ?

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When 1.00g of hydrogen combines with 8.00g of oxygen, 9.00gof water is formed. During this chemical reaction, 2.86 × 10⁵J of energy is released. The difference in mass is 4.51 g..

As a matter of fact, chemical reactions are characterized by the exchange of energy and matter, among other features. The law of conservation of mass states that mass is conserved in a chemical reaction.

The law of conservation of energy states that energy is conserved in a chemical reaction.

Combining these two laws yields Hess's law of heat summation.

A balanced chemical equation is used to determine the quantity of substances consumed or produced in a reaction.

To calculate the difference in mass, we must first consider the chemical equation:

2H2(g) + O2(g) → 2H2O(l) (the coefficients are the stoichiometric ratios of the reactants and products in this equation)

The molecular weights of H2 and O2 are 2.016 g/mol and 31.998 g/mol, respectively.

The molecular weight of H2O is 18.015 g/mol.

Calculate the number of moles in 1.00 g H2 and 8.00 g O2:

1.00 g of H2=1/2(1.008 g/mol)/1.00 g/mol=0.498 mol H2;

8.00 g of O2=8.00 g/mol/31.998 g/mol=0.250 mol O2

By using stoichiometry, calculate the amount of H2O produced from the reaction:

Since 2 mol of H2 reacts with 1 mol of O2 to produce 2 mol of H2O, we can say that:

0.498 mol of H2 reacts with 0.25 mol of O2 to produce (0.498/2)mol of H2O=0.249 mol of H2O;

The mass of the produced water is:

mass of H2O=0.249 mol*18.015 g/mol

mass of H2O =4.49 g H2O

The difference in mass is:

mass of H2 + mass of O2 - mass of H2O=1.00 g H2 + 8.00 g O2 - 4.49 g H2O

difference in mass =4.51 g.

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One of Galileo's famous experiments involved dropping objects of different weights from the Leaning Tower of Pisa to demonstrate that they fell at the same rate in the absence of air resistance, contrary to Aristotle's belief that heavier objects fell faster.

Galileo Galilei was an Italian physicist and astronomer who made significant contributions to the study of motion. At the time, the dominant theory of motion was proposed by Aristotle, who believed that heavier objects fell faster than lighter objects. Galileo performed experiments, including dropping objects of different masses from the Leaning Tower of Pisa, and found that objects of different masses fall at the same rate in the absence of air resistance.

This insight led Galileo to the conclusion that objects fall due to gravity, which acts equally on all objects regardless of their mass. He also discovered the concept of inertia, which states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. Galileo's work was crucial in the development of modern physics and set the stage for the later work of scientists such as Isaac Newton, who developed the laws of motion and universal gravitation based on Galileo's observations and insights.

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Answer:

b

Explanation:

Answer:

they transfer energy

Explanation:

Explanation:

Minimum force means that the force should be applied at a 90° angle from the wrench.

40.0Nm / (0.30m) = 133.33N.

The mimumum force is 133.33N.

The height of the hill, given the radius and mass of the Earth can be found to be 2.5 km.

We can use the conservation of energy to solve this problem. The potential energy of the stone at the top of the hill is equal to its gravitational potential energy, which is given by:

PE = mgh

Solving for height , we get:

h = (G x M x m) / (R x m x g)

h = (6.67 x 10^-11 x 6 x 10^24 x 40) / ((6.4 x 10^6 + h) x 9.8)

h = 2.5 km

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The conservation of energy law similarly holds that energy cannot be created or destroyed.

That's what the fundamental law of thermodynamics says. It is only possible to change the form of energy; it cannot be created or destroyed. This is sometimes known as the rule of energy conversion or perhaps the law of energy conservation.

The two aforementioned principles were unified into one when Albert Einstein published the formula E= mc2 at the start of the 20th century, resulting in the formation of the Conservation Law of Mass-Energy, which asserts that the total quantity of both mass and energy in the universe remains constant.

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The total kinetic energy before the collision, the spring potential energy, and the kinetic energy after the collision would be equal.

When comparing the kinetic energy before the collision, the spring potential energy, and the kinetic energy after the collision, a long explanation is necessary to make a proper comparison. Let's explore the different energies involved and the expected outcomes:Kinetic energy before the collision Before the collision, the system has a total kinetic energy of 1/2 mv², where m is the mass of the object and v is its velocity.

This energy is purely kinetic energy because the object is moving. So the total energy before the collision is only kinetic energy.Spring potential energyThe spring potential energy is the energy stored in a spring when it is stretched or compressed. It is equal to 1/2 kx², where k is the spring constant and x is the displacement from the equilibrium position. When the spring is compressed or stretched, it stores energy in the form of potential energy, which can be used to do work.

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Answer:

50%.......

Explanation:

is the correct check it then send feedback

Answer:

It will apply the greatest pressure of an area of 1.

Explanation:

To find pressure use the formula P = F/A

P = 100/1

P = 100

Answer:

10 N / cm^2

Explanation:

The Formiula is P = F / A

P = presure

F = Force in Newtons

A = area.

The answer is the smaller the area the larger the pressure.

The smallest area you have given us is 10 cm^2

The Pressure = 100N / 10 cm^2

Pressure = 10 N/cm^2  

Note: the units are not exactly standard units, but I've given the answer the way the question offers the units.

The person will be successful in pulling the box if the force of static friction between the box and the surface is less than or equal to the applied force.

1. Force of static friction: When an object is at rest on a surface, there is a force of static friction acting between the object and the surface. This force opposes the motion and prevents the object from sliding.

2. Coefficient of static friction: The coefficient of static friction (µₛ) is a property of the materials in contact and determines the magnitude of the force of static friction. It is a dimensionless value ranging from 0 to 1.

3. Applied force: The person is exerting a horizontal force (F) of 40.0 N on the box.

4. Condition for successful pulling: For the person to be successful in pulling the box, the force of static friction (Fₛ) between the box and the surface must be less than or equal to the applied force (F).

5. Calculation of the maximum static friction force: The maximum static friction force (Fₛmax) can be calculated using the equation Fₛmax = µₛN, where N is the normal force exerted on the box by the surface. The normal force is equal to the weight of the box, which can be calculated as N = mg, where m is the mass of the box (10.0 kg) and g is the acceleration due to gravity (9.8 m/s²).

6. Comparing the forces: Substitute the values into the equation Fₛmax = µₛN. If the maximum static friction force (Fₛmax) is less than or equal to the applied force (F), then the person will be successful in pulling the box. Otherwise, if Fₛmax > F, the person will not be able to overcome the static friction and move the box.

In this case, without knowing the value of the coefficient of static friction (µₛ), it is not possible to determine whether the person will be successful in pulling the box. If the coefficient of static friction (µₛ) is less than or equal to 0.500, then the person's force of 40.0 N will be sufficient to overcome the maximum static friction force and move the box.

However, if the coefficient of static friction is greater than 0.500, the person will not be able to pull the box with the given force.

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Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Let, X be the number of sags per week. Then, X ~ N(353, 30) and Y be the number of swells per week. Then, Y ~ N(184, 25).Let Z be the number of sags per week that we are interested in. Then, Z ~ N(410, 30).

To find the probability that the number of sags per week is less than 410, we need to find P(Z < 410).P(Z < 410) = P((Z - 353)/30 < (410 - 353)/30) = P(Z-score < 1.90)Using the Z-table, we find that the probability of Z-score being less than 1.90 is 0.9713.

The problem is asking us to find the probability that the number of sags per week is less than 410. To solve this problem, we need to use the concept of standard normal distribution.The standard normal distribution is a special case of the normal distribution where the mean is 0 and the standard deviation is 1. We can convert any normal distribution into a standard normal distribution using the formula Z = (X - μ)/σ, where X is the variable of interest, μ is the mean, and σ is the standard deviation.If we know the mean and standard deviation of a normal distribution, we can use the Z-score to find the probability of a given value occurring.

The Z-score is the number of standard deviations that a given value is from the mean. The Z-score is calculated using the formula Z = (X - μ)/σ.To find the probability that the number of sags per week is less than 410, we need to convert the distribution of X into a standard normal distribution. We do this by subtracting the mean of X from 410 and dividing by the standard deviation of X.

We get Z-score as 1.90.To find the probability of Z-score being less than 1.90, we use the Z-table. The Z-table provides the probability that a Z-score is less than a given value. The probability of Z-score being less than 1.90 is 0.9713.Therefore, the probability that the number of sags per week is less than 410 is 0.9713.

The probability that the number of sags per week is less than 410 is 0.9713.

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Both Newton's laws and Kepler's third law can be used to estimate the mass of the black hole in M87, and combining the information obtained from both methods has led to the discovery that the black hole is approximately 6.5 billion times the mass of the sun.

Yes, both Newton's laws and Kepler's third law can be used to determine the mass of the central black hole in M87 by analyzing the motion of the hot gas orbiting the nucleus.

Newton's laws of motion can be applied to the orbiting gas to determine the centripetal force acting on it, which is related to the gravitational force between the gas and the central black hole. This, in turn, can be used to calculate the mass of the black hole.

Kepler's third law can also be used to determine the mass of the black hole by analyzing the orbital period and distance of the gas from the black hole. The law states that the square of the orbital period is proportional to the cube of the semi-major axis of the orbit, which can be used to calculate the mass of the black hole.

By combining the information obtained from both methods, astronomers have been able to estimate the mass of the central black hole in M87 to be approximately 6.5 billion times the mass of the sun. This groundbreaking discovery was made possible by the Event Horizon Telescope, which is a network of telescopes that are able to observe black holes and their surroundings in unprecedented detail.

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The amount of resistance that each resistor has, in this closed circuit, given the batteries is 3 ohms.

In a closed circuit, the total resistance (R_total) is equal to the sum of the individual resistances. We can use Ohm's law to solve for the resistance of each resistor:

Resistance (R) = Voltage (V) / Current (I)

Using Ohm's law, we can solve for the total resistance (R_total) of the circuit:

= V_total / I

= 18V / 2A

= 9 ohms

Since there are three identical resistors in the circuit, we can divide the total resistance by 3 to find the resistance of each resistor:

= 9 / 3

= 3 ohms

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Answer:

The mass is one of the factors affecting gravitational field strength.

Weight (Force) = mass × gravitational field strength

= 0.10 × 10 (10 is the fixed gravitational field strength on Earth)

= 1.0 N

The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.

Answer:

Gravity is the force that keeps everything on the ground instead of it floaating around!

Explanation:

Without gravity, you would be floating round in your house dodging floating objects.

Hope this brings you down to earth!

Have an amazing day!

PLEASE RATE AND MARK BRAINLIEST!! :)

The time needed to take off is 0.8s

Acceleration can be defined as the rate of change of velocity. It is a vector quantity.

Given that a plane accelerates from rest at a constant rate of 5.0 m/s² along a runway that is 1800 mm long. Assume that the plane reaches the required takeoff velocity at the end of the runway.

The takeoff velocity V will be

V² = U² + 2aS

Where

Substitute all the parameters into the formula above

V² = 0 + 2 × 5 × 1.8

V² = 18

V = √18

V = 4.24 m/s

The time t needed to take off will be

V = U + at

4.24 = 0 + 5t

5t = 4.24

t = 4.24 / 5

t = 0.8 s

Therefore, the time needed to take off is 0.8s

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Answer:

The efficiency is just 0.016

Explanation:

The efficiency is given by the useful energy ÷ by the total energy.

1 W is the same that 1 joule per second

If you do the math:

1.6/100=0.016

C. The placement of the ammeter in the circuit

Using the concept of torque, the girl can walk out  1.52 m on the plank before the rope breaks.

The rotating force or moment of a force around a particular axis or pivot point is measured by torque. The tendency of a force to cause an object to spin along an axis is described as a vector quantity, torque.

We need to consider the torque exerted by the girl's weight and the tension in the rope.

The torque equation is given by:

τ = F × d where:τ is the torque, F is the force, and d is the distance from the pivot point.

In this case, the torque due to the girl's weight is balanced by the torque due to the tension in the rope.

The weight of the girl is

Weight = 63.2 kg * 9.8 = 619.36 N

Assuming the girl walks out on the plank at a distance of x m from the block.

The torque due to her weight is τ₁ = Weight  × x

The maximum tension the rope can withstand is 414 N, so the torque due to the tension in the rope is: τ₂ = Tension * (3.8 - x)

To find the maximum distance the girl can walk out on the plank before the rope breaks, we need to set the torques equal to each other:

τ₂ = τ₁

Weight × x = Tension × (3.8 - x)

putting all the values in the above equation

619.36 × x = 414 × (3.8 - x)

x = 1.52 m

Therefore, The girl can walk out  1.52 m on the plank before the rope breaks.

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The free body diagram of the elevator can be shown as,

According to free body diagram, the net force acting on the elevator is,

According to Newton's law,

Plug in the known expression,

Substitute the known values,

Thus, the maximum force exerted on the cable is 48925 N.

For minimum, tension the net force can be expressed as,

Plug in the known expression,

Substitute the known values,

Thus, the minimum force exerted on the cable is 44175 N.