A 3. 00-kilogram mass is thrown vertically upward

with an initial speed of 9. 80 meters per second.

What is the maximum height this object will

reach? [Neglect friction. ]

(1) 1. 00 m (3) 9. 80 m

(2) 4. 90 m (4) 19. 6 m

The component of the electric field is determined by calculating the electric field generated by the charged line and then considering only the x-directional influence of that field at point p.

The x-component of the electric field, denoted as \(e_{x}\)(p), is the horizontal component of the electric field produced by a line of charge at a specific point, p, located at coordinates (x, y).

To find \(e_{x}\)(p), we first determine the total electric field produced by the line of charge using Gauss's Law or Coulomb's Law, taking into account the charge distribution, line length, and distance from the line to point p. Next, we analyze the geometry of the situation, specifically the angle between the electric field vector and the x-axis, which is related to the coordinates (x, y) of point p.

By applying trigonometric principles, we can isolate the x-component of the electric field. Generally, the x-component is given by \(e_{x} = E \cos{\theta}\), where E is the total electric field, and θ is the angle between the electric field vector and the x-axis.

In conclusion, \(e_{x}\)(p) is the x-component of the electric field produced by a line of charge at point p with coordinates (x, y). It is found by calculating the total electric field generated by the line and isolating the x-directional influence using trigonometry.

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(a) The magnetic dipole moment of a circular coil is given by the equation:

μ = NIA

where μ is the magnetic dipole moment, N is the number of turns, I is the current, and A is the area of the coil.

Substituting the given values, we get:

3.0 Am² = 210 × I × π(0.026 m)²

Solving for I, we get:

I = 4.76 A

Therefore, a current of 4.76 A through the coil results in a magnetic dipole moment of 3.0 Am².

(b) The torque experienced by a magnetic dipole in a uniform magnetic field is given by the equation:

τ = μBsinθ

where τ is the torque, μ is the magnetic dipole moment, B is the magnetic field strength, and θ is the angle between μ and B.

In this case, the maximum torque occurs when θ = 90°, which means sinθ = 1. Substituting the given values, we get:

τ = (3.0 Am²)(5.0 × 10⁻⁵ T)(1)

τ = 1.5 × 10⁻⁴ Nm

Therefore, the maximum torque that the coil will experience in a uniform field of strength 5.0 × 10⁻⁵ T is 1.5 × 10⁻⁴ Nm.

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Answer: TRUE

Explanation: I did it before

The composition of the sun by mass of hydrogen drops, but the amount of helium grows because helium is heavier than hydrogen.

The percentage by mass of an element in a compound is the percentage the mass of that element contributes to the total mass of the substance.

The percentage by mass of an element depends on the mass of the element.

Heavier elements in equal amounts with less dense elements have a greater percentage mass.

Since the mass of the helium atom is greater than the mass of the hydrogen atom, the Sun's composition by mass of hydrogen drops while that of helium increases.

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Answer:

if a gas produced, most likely a chemical reaction took place ​

Explanation:

Answer:

if a gas produced, most likely a Chemical reaction took place

Explanation:

hope this helps and have a good day <3

The flow speed of the ideal fluid in the wider section is 6 m/s.

The flow speed of the ideal fluid in the wider section is calculated by applying continuity equation as shown below.

A₁V₁  =  A₂V₂

Where;

πr₁²V₁² = πr₂²V₂²

r₁²V₁² = r₂²V₂²

V₂² = r₁²V₁² / r₂²

Where;

V₂² = r₁²V₁² / r₂²

V₂² = ( r₁²V₁²) / (2r₁)²

V₂² = ( r₁²V₁²)/(4r₁²)

V₂² = (V₁²)/(4)

V₂² = (12²)/4

V₂² = 36

V₂ = √36

V₂ = 6 m/s

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Answer:

\(31.7\:\mathrm{N}\)

Explanation:

We can use basic trig in a right triangle to solve this problem. Let the x component of the force be \(x\). We have the following equation:

\(\cos 24^{\circ}=\frac{x}{34.7},\\x=34.7\cos 24^{\circ}\approx \boxed{31.7}\)

Answer:

Pascal's law states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container. ... Applied to a more complex system below, such as a hydraulic car lift, Pascal's law allows forces to be multiplied.

Explanation:

(a) Force is doing negative work on the car as it is being lifted is  The force of gravity on the car due to the Earth.

(b) The force is doing positive work on the car as it is being lifted is the force of the car acting on the rope.

(a) Due to the gravity of the earth on the car, negative work is done on the car when lifting it, as gravity is in the opposite direction of the car moving. Negative work is done when force and displacement are in opposite directions. In this case, gravity acts downward as the car moves upward. The force of the rope acting on the car does positive work because it is in the same direction as the car is moving.

(b) The work done is defined as the product of the force and the displacement in the direction of the force.

W = F x d x Cos θ

where θ is the angle between force and displacement.

Gravity is acting downward, moving upward, so the included angle is 180. cos 180 = -1 , so the work done by gravity is negative.

The upward force and upward movement of the rope.

Thus, the work performed is active.

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Answer:

Pressure of .2 m^3 of bricks:

Pb = ρ g H = 1.8 ρw * 9.80 m/s^2 * .20 m = 1800  * 9.8 * .2 = 3530 Pascals

ρb = 1.8 ρw = 1.8    since the density of bricks is 1.8 that of water

Pw = 1 * 9.8 * 1000 * .2 = 1960 Pascals

W = P * A   pressure * Area = Force

Pnet = 1570 Pascals - pressure due to bricks under water

F = 1570 N/m^2 * .2m^2 = 63 N     force on pile of bricks

Answer:

serial in which container is filled

Solid -base of container

Liquid- above solid

Gas- above liquid

Explanation:

If any mixture of  matter in different state (that solid , liquid or gas )are kept in any container, then substance with higher density will be settled at lowest surface first and similarly the substance with lowest density will be at upper part of container.

In the given container we have to keep solid, liquid and gas

based on this

solid will be at surface of container

above sold will be liquid

above liquid will be presence of Gas

serial in which container is filled

Solid -base of container

Liquid- above solid

Gas- above liquid

Answer:

right option is :- A

Explanation:

Answer:

The answer is C. The electromagnetic waves transfer energy.

The electromagnetic waves cause a disturbance in the electric and magnetic field as the electromagnetic waves transfer energy. Thus, the correct option is C.

The electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field. These waves propagate through space and carry momentum and electromagnetic radiant energy as well. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. All of these waves form together different parts of the electromagnetic spectrum.

Electromagnetic waves or the EM waves are waves which are created as a result of vibrations between an electric field and a magnetic field. Electromagnetic waves are composed of oscillating magnetic and electric field lines and transmit energy.

Therefore, the correct option is C.

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Answer:

417.5 kg

Explanation:

Since the gravitational for of attraction F, equals the weight of the object W when its close to the earth, F = GMm/R² = W = mg where m = mass of object and g = acceleration due to gravity close to the earth = 9.8 m/s².

g = GM/R² where  g = acceleration due to gravity close to the earth, G = universal gravitational constant = 6.67 × 10⁻¹¹ Nm²/kg², M = mass of earth = 5.927 × 10²⁴ kg and R = radius of earth = 6.4 × 10⁶ m

So, g = GM/R²

= 6.67 × 10⁻¹¹ Nm²/kg² × 5.927 × 10²⁴ kg/(6.4 × 10⁶ m)²

= 39.53 × 10¹³ Nm²/kg ÷ 40.96 × 10¹² m²

= 9.65 N/kg

≅ 9.7 N/kg

= 9.7 m/s²

Since W = 4050 N and W = mg

m = W/g = 4050 N/9.7 m/s²

= 417.53 kg

≅ 417.5 kg

So, the mass of the object is 417.5 kg

For most everyday objects, scientists use a balance to obtain an object's mass. A balance compares an object with a known mass to the object in question. One example of a balance is the triple beam balance.

A red filter with a large aperture telescope offers the best solution for maximizing resolution.

To maximize resolution in the visible range of a circular aperture, it is best to choose option D: apply a red filter and use the telescope with the largest aperture possible.

Resolution is determined by the size of the aperture, with larger apertures allowing more light to enter and providing higher resolution.

The red filter is chosen because longer wavelengths of light (such as red) are less affected by atmospheric turbulence, resulting in better image quality.

This combination enables the telescope to capture more light and reduce the blurring effects caused by atmospheric conditions, leading to enhanced resolution in the visible range.

A red filter with a large aperture telescope offers the best solution for maximizing resolution.

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The average time between two drops falling t = 2/5 sec.

To calculate average time use formula,

t + t / product

So,

given,

time = 20 s

drops = 50

average time = ?

From this,

measured time for 50 drops = 20sec

Time required for 1 drop = 20/ 50

Average time between two drops = (2/5 + 2/5) / 2

Hence,

The average time between two drops t = 2 / 5

Average Time on Page is a web analytics metric that gauges how long, on average, all website visitors stay on a single page. Only the average amount of time that users spend on non-exit pages is measured by this metric, which ignores exit pages and bounces.

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Answer:

4km

Explanation:

Distance=speed x time

Knowing this we know the time and speed

so it is 8 x .5= D

And 8 x .5 =4

If you have any questions let me know

Answer:6/1 %50 x11

Explanation:

25-45

Answer:

An electromagnet is made by forming a coil around a soft iron bar (known here as the metal) such as a nail or  screw and connect with an insulated copper wire (known here as the electric current conductor) the ends of the wound copper is then connected separately to the positive and negative terminals of a battery (known here as the source of electric current)

The north seeking needle of the magnetic compass will move away when brought close to the north pole of the formed electromagnet which can then be labelled N

The magnetic compass needle will be attracted to the south pole of the electromagnet which can then be labelled S

Explanation:

An electromagnet is an electric powered magnet that is formed (temporarily) by the perpendicular movement of electric current with respect to a metal core

The magnitude and the poles of an electromagnet can be changed by changing the magnitude and the direction of flow of the electric current respectively.

Answer: because of air resistance. See explanation for further details.

Explanation: Galileo performed an experiment to proof that the time of descent of two different masses is independent of time.

But in reality this is most likely not true because of air resistance and other fluid frictional effects in consideration.

If the experiment is performed in a vacuum, it will always be true that time is independent of masses of two falling objects.

Answer:

1.78m/s

Explanation:

Given parameters:

Velocity of the arrow = 22.8m/s

Height of the wall  = 15.5m

Unknown:

Time taken for the arrow to reach the ground  = ?

Solution:

To solve this problem we employ the appropriate motion equation:

     H  = ut + \(\frac{1}{2}\) g t²

 H  is the height

  u is the initial velocity = 0

   g is the acceleration due to gravity  = 9.8m/s²

  t is the unknown time

  15.5 = \(\frac{1}{2}\) x 9.8 x t²

  15.5 = 4.9t²

     t² = 3.16

      t = 1.78m/s

The characteristics of the thermistors allow to design an experiment to analyze the dependence of resistance with temperature;

      1) We set up the circuit

      2) We look for the current of the circuit and we keep it fixed.

      3) We look for the thermistor resistances for each temperature.

      4) Plot Resistance versus Temperature.

A Thermitor is an element whose resistance changes with temperature, for example a platinum resistance.

An experiment that we can carry out to measure is to set up the attached circuit where we have:

Let's start by looking for the current in the circuit.

In thermistors, the resistance for room temperature is given, so if we measure the voltage across the fixed resistor, we can shrink the voltage across the thermistor.

           \(V_{source} = V_R + V_{therm} \\V_{therm} = V_{source} - V_R \\ i = \frac{V_{therm} }{R_{therm}}\)

This current remains fixed, since the fixed resistance is greater than the resistance of the thermistor throughout the range.

Second step.

Now we can change the temperature that is measured in the thermometer, for each temperature the voltage in the fixed resistance is measured, the resistance in the thermistor is calculated.

        \(R_{therm} = \frac{V_{source} - V_R}{i}\)  

Third step.

We end with a graph of resistance versus temperature of the curve obtained, it is possible to understand the behavior of the resistance of the thermistor with temperature.

In conclusion with the characteristics of thermistors we can design an experiment to analyze the dependence of resistance with temperature:

      1) We set up the circuit

      2) We look for the current of the circuit and we keep it fixed.

      3) We look for the thermistor resistances for each temperature.

      4) Plot Resistance versus Temperature.

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The current drawn by a microwave is greater than the amount of current used by an electric bulb, hence the microwave consumes more power.

The amount of energy dissipated by an electrical appliance is the calculated using the following formulas;

P = I²R

where;

The current drawn by a microwave is greater than the amount of current used by an electric bulb, hence the microwave consumes more power.

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The term "short circuit current rating" is often used interchangeably with interrupting rating in the electrical industry, but there is a subtle difference.

Interrupting rating refers to the maximum current level that a circuit breaker or other protective device can safely interrupt without damage, whereas short circuit current rating refers to the maximum level of fault current that a device or system can withstand without damage.

In other words, interrupting rating is a measure of a device's ability to stop a fault, while short circuit current rating is a measure of its ability to withstand the fault.

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When the slit is made smaller, the spot becomes larger because of the phenomenon known as diffraction.

Diffraction is the bending of light waves around small obstacles and the spreading out of light waves past small openings. When the slit is made smaller, the amount of diffraction increases, causing the spot to become larger. This is because the smaller the slit, the more the light waves spread out as they pass through it, creating a larger spot on the other side. This is an example of the wave nature of light and is described by the Huygens-Fresnel principle.

In mathematical terms, the size of the spot is inversely proportional to the size of the slit. This means that as the slit size decreases, the spot size increases, and vice versa.

In conclusion, making the slit smaller causes the spot to become larger due to the phenomenon of diffraction, which causes light waves to spread out more as they pass through the smaller slit.

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When acceleration is equal to zero average velocity and the instantaneous velocity vectors are identical.

Velocity is defined as the rate of displacement of an object with respect to time. It is measured in meter/ seconds and is a vector quantity.

Acceleration is defined as the rate at which velocity changes with time.

There are two types of velocity which includes:

The situation that will make the average velocity and the instantaneous velocity vectors to be equal or identical is when acceleration is equal to zero.

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100 times stronger than electromagnetic force. And 10,000 times stronger than the weak force. With radioactive decay, it's a hundred millionss times stronger than gravity.