2 Resistors of resistance, R = (100 +- 3) Ohm, R2 = (200+-4)Ohm are connected in Parallel and Series.

Find the absolute error and % error in the measurement of equivalent resistance are in each combinations I.e Series and Parallel.. ??

Answer:

300 J

Explanation:

[tex]v = \sqrt{2gh}[/tex]

[tex]KE = \frac{1}{2}mv^{2}[/tex]

——

[tex]v = \sqrt{2(9.81 m/s^{2})(0.5 m)}\\ v = 3.13[/tex]

[tex]KE = \frac{1}{2}(61.2 kg)(3.13 m/s)^{2}\\ KE = 300 J[/tex]

Kinetic energy of an object is calculated from its mass and velocity. The mass of the player is 61.2 g and the velocity is 3.13 m/s. Then the kinetic energy of the basketball player is 300 J.

Kinetic energy of an object is generated by virtue of its motion. Kinetic energy depends on the mass and velocity of the body by the expression:

K = 1/2  mv².

Given the weight = 600 N

mass = 600 N/9.8 m/s²= 61.2 kg

height = 0.5 m

velocity = √2gh

             = √(2×9.8 m/s² × 0.5 m )  = 3.13 m/s

Then, kinetic energy of the player = 1/2 61.2 kg × 3.13 × 3.13

k = 300 J.

Therefore, the kinetic energy of the basketball player is 300 J.

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69,912 km !!!!!!!!!!!!!!!!!!!!!

Answer:

Sandy Loam soil

Explanation:

The ideal properties of a soil for growing plants is to have a reasonable drainage, good amount of aeration,  pH value of the soil that allows the availability of all the elements such as potassium, iron, calcium, magnesium, nitrogen etc for growth. Loam soil has the features mentioned above and hence it makes a good choice.

The work done by a person using a force of 25 N to move a desk 3.0 m is 75 Joules, calculated by multiplying the force and the distance.

The concept in question is related to work and energy, under Physics. The work done by a force is defined as the product of the force and the distance over which the force acts, given by the formula: Work = Force x Distance. This implies that the work done is equal to the value of the force (in newtons) multiplied by the distance (in meters) over which the force is applied. In this case, a force of 25 N is acting to move a desk over a distance of 3 m. The work done can be calculated by multiplying the force and the distance: 25 N x 3 m = 75 J (Joules).

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The person's weigh on Jupiter is 1326.52 N.

Weight is a measurement of how much gravity is pulling on a body.

Weight is calculated using the formula: w = mg.

Given that weight is a force, its SI unit is also a force; hence, the SI unit of weight is the Newton (N). By examining the weight expression, we can see that it is dependent on mass and the acceleration caused by gravity.

Given that:  a person weighs 500 N on Earth.

the acceleration due to gravity on Jupiter is 26 m/s^2.

Acceleration due to gravity on Earth is 9.8 m/s^2.

Hence, mass of the person

= Weight on Earth/acceleration due to gravity on Earth

=500 N/9.8 m/s^2.

= 51.02 kg.

Her weigh on Jupiter is

= mass of the person × acceleration due to gravity on Jupiter

= 51.02 kg × 26 m/s^2

= 1326.52 N.

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Answer:

Lenz's law

Explanation:

Lenz's Law states that the induced tensions will be such that they oppose the variation of the magnetic flux that produced them; However, this law is a consequence of the principle of conservation of energy.

Lenz's Law: "The sense of the currents or induced electromotive force is such that it always opposes the cause that produces it, that is, the variation of the flow."

Thanks to the already named Lenz Law, the Faraday Law was completed, so it is common to also call it the Faraday-Lenz Law to honor its efforts in the problem, Russian physicists always use the name "Faraday-Lenz Law ".

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An ionic bond forms between sodium and chlorine when the sodium atoms donate elections

Answer:

The answer is A) 1,000 meters = 1 Kilometer.                                                        

Explanation:

To convert 18 Kilometers into meters, one would have to  multiply the figure given in Kilometer by 1000.

Therefore we have 18 x 1000

= 18,000.

So 18 Kilometers is also 18,000 meters when converted.

Cheers!

Answer: The correct answer is "Light has properties of both particles and waves".

Explanation:

Light shows dual nature. It behaves as particle as well as waves.

Photoelectric effect is the phenomenon in which there is an emission of the electrons when the light of the particular frequency is incident on the surface of the metal.

The particle nature of the light is shown by photoelectric effect.

Reflection: Reflection is the phenomenon in which the light wave gets reflected from the surface without getting transmitted. It bounces back from the surface.  

The wave nature of the light is shown by reflection.

Therefore, the correct option is (B).

Explanation : According to the law, it says that F ∝ Mm ÷ R²

Where :

For calculating the gravitational force (F), we must have an equation. According to the law, we are ain't getting any equation. Hence, we must convert it by putting a constant.

A constant is any value that is fixed, and it won't change under any circumstance. And in this case, the value of the gravitational constant (G) is 6.67 x 10⁻¹¹.

Now, here comes the final equation :  F = GMm ÷ R²

Where :

Hence, the main purpose of the universal gravitational constant (G) is to have an equation, which is F = GMm ÷ R².

Final answer:

The net force exerted on a tennis ball being served, which accelerates from rest to 36 m/s over a distance of 35 cm, is approximately 107.05 N.

Explanation:

To determine the magnitude of the net force acting on a tennis ball being served, we first need to calculate the acceleration of the ball. With an initial speed (vi) of 0 m/s, a final speed (vf) of 36 m/s, and a distance (d) of 0.35 m over which the acceleration occurs, we can use the kinematic equation vf^2 = vi^2 + 2ad to solve for acceleration (a).

vf^2 = 2ad → a = vf^2 / (2d) → a = (36 m/s)^2 / (2*0.35 m) → a ≈ 1845.71 m/s2.

Using this acceleration and the mass of the ball (m), we can then apply Newton's second law, Fnet = ma, to find the net force. The mass of the tennis ball is 0.058 kg (58 g). Thus, Fnet = ma = 0.058 kg * 1845.71 m/s2 → Fnet ≈ 107.05 N.

So, the net force exerted by the racket on the tennis ball is approximately 107.05 N.

The work done by the two campers against frictional force is 4200 Joule.

The definition of force in physics is: the push or pull on a mass-containing item changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Frictional force acting on the he canoe: F = 84 N.

Displacement of the canoe: d = 50 m.

Hence, work done by the two campers against frictional force = force × displacement

= 84 N × 50 m

= 4200 Joule.

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Final answer:

To calculate the concentration of oxygen in molecules per liter, we use the ideal gas law equation and substitute the given values to find the number of moles of oxygen. The concentration of oxygen is approximately 29.5 molecules per liter.

Explanation:

To calculate the concentration of oxygen in molecules per liter, we need to use the ideal gas law equation: PV = nRT. Rearranging the equation, we have n = PV/RT, where n is the number of moles of oxygen in the given volume, P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature.

Given the pressure of 739 torr, volume of 1 liter, and temperature of 29.5°C (which needs to be converted to Kelvin), we can substitute these values into the equation. The ideal gas constant R is 0.0821 L*atm/(mol*K).

Therefore, the concentration of oxygen in molecules per liter is:

n = (739 torr * 1 L) / (0.0821 L*atm/(mol*K) * (29.5+273) K)

n = 29.5

So the concentration of oxygen is approximately 29.5 molecules per liter.

Answer:

SIZE AND DISTANCE BETWEEN THEM

The kind of wave interaction shown here is reflection.

What is meant by reflection ?

Reflection is the defined as the phenomenon by which a wave bounces back when it his on a medium or a plane.

Here,

The wave is shown as incident on the wall after that it is bounced back from the surface of the wall. Since, the wave is bounced back from the surface, we can say the wave interaction happened here is reflection. The surface of the wall here acts as the reflecting surface.

The wave that incident on the surface of the wall is called the incident wave. The wave that bounced back from the surface is called reflected wave.

If we draw a perpendicular line on the reflecting surface, it can be called the normal.

According to law of reflection, the incident wave, the reflected wave and the normal, all of them lies in the same plane. Here we can see that all of them are on the same plane. So, the law of reflection is valid in this situation.

Also, here only the direction of the wave is changed, which is the property of reflection.

Hence,

The kind of wave interaction shown here is reflection.

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If potential energy in a system increases while its total mechanical energy remains constant, kinetic energy decreases equivalently. This exchange between kinetic and potential energy is an example of the conservation of mechanical energy. Changes in internal energy may also manifest as a change in temperature or energy within the system's structure.

When the potential energy in a system increases without a change in the mechanical energy (assuming no energy is lost to friction), the kinetic energy would decrease equivalently to conserve the total mechanical energy of the system. This is in accordance with the principle of conservation of energy. If an object, for example, is at a certain height above the ground and it is raised further, its potential energy increases due to its position. Consequently, if the object is in free fall, as the potential energy decreases, the kinetic energy increases until the object reaches ground level, where potential energy is at its minimum while kinetic energy is at its maximum.

When the potential energy in a system increases with kinetic energy being equal, it means the internal energy of the system is rising. This increase can be due to an increase in internal potential energy, internal kinetic energy, or both. The work done on the system equals the increase in internal energy.

Moreover, any increase in a system's internal energy that does not result in elevation or speed gain could translate to an increase in internal potential energy or internal kinetic energy, or both. An increase in the internal kinetic energy would generally be observed as an increase in temperature, while an increase in internal potential energy might be observed as energy stored within the structural or molecular configuration of the system.

If we apply this to the scenario of a child on a swing, as the child swings downward, the potential energy (due to height) decreases while kinetic energy increases. Conversely, as the child swings upward, the kinetic energy decreases and potential energy increases.

A force that holds atoms together is a chemical "bond".

Chemical bonds hold atoms together and make brief associations that are fundamental to life. Sorts of chemical bonds including covalent, ionic, and hydrogen bonds and London dispersion forces.  

The chemical bond can be thought of as a power that holds the particles of different components together in such compounds. It opens up the likelihood of a huge number of mixes of the components, and the formation of a large number of new compounds.

Answer:

Therefore, A force that holds atoms together is a chemical bond.

Explanation:

Chemical bond : A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.

Everything in the world around us is made up of atoms, which are tiny pieces of matter. Different atoms stick together to form all kinds of things in the world. A chemical bond is formed when two or more atoms are attracted to each other and form a chemical compound.

Types of chemical bonds including:

Ionic Bonds

Covalent Bonds

The elevator is accelerating downward as the scale reads less than the person's weight. The acceleration of the elevator can be calculated using Newton's second law of motion and is approximately 1.4 m/s² downward.

When a person stands on a scale in an elevator, the scale reading reflects the normal force, which is the force exerted by the scale on the person. If the scale reads 700 N when at rest and only 600 N when the elevator starts to move, it indicates that the elevator is accelerating downward.

This is because the normal force (and thus the scale reading) is less than the person's weight, which would only happen if the force due to acceleration opposes the force of gravity.

For part (b), to find the acceleration of the elevator, we can use Newton's second law of motion. The net force on the person can be calculated by subtracting the scale reading (the normal force) from the person's weight (gravitational force). Let m be the mass of the person and a be the acceleration. We have:

mg - FN = ma

Since mg is the weight (700 N) and FN is the scale reading (600 N):

700 N - 600 N = ma

100 N = ma

Using the given weight of 700 N and the acceleration due to gravity (9.8 m/s2), we find the mass m = 700 N / 9.8 m/s2 = approximately 71.43 kg.

Therefore, the equation becomes:

100 N = 71.43 kg * a

The acceleration a is about 1.4 m/s2 downward.