Explain why the emission spectrum of hydrogen is different than the emission spectrum of sodium.

As you speed up while driving through the rain, the angle of the rain relative to the horizontal that you observe from inside the car will become more perpendicular. This is because the raindrops are being deflected by your car's movement, making them appear to be coming straight down.

When you're driving through the rain, the raindrops are initially hitting the windshield of your car at an angle. If you speed up, the velocity of your car increases, and this increases the deflection of the raindrops as they hit your windshield. The result is that the angle at which the raindrops hit the windshield appears to be more perpendicular, making it appear as though the rain is falling straight down. This is simply an optical illusion caused by the increased deflection of the raindrops due to your car's movement.

It's important to note that the actual angle of the rain relative to the horizontal hasn't changed. Rather, it's just the angle that you perceive from inside the car that has changed due to the increased deflection of the raindrops caused by your car's movement.

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There are three main types of Boolean operations that are commonly used in 3D modeling:

1. Union: This operation combines two or more objects into a single object by merging their overlapping areas. This is useful for creating complex shapes by combining simpler ones.

2. Difference: This operation subtracts one object from another, creating a cavity or hole in the remaining object. This is useful for creating cutouts or removing unwanted sections of an object.

3. Intersection: This operation creates a new object that only includes the overlapping areas of two or more objects. This is useful for creating precise cuts or intersections between objects.

These Boolean operations are often used in combination with each other to create complex 3D models. They are supported by most 3D modeling software and are essential tools for creating detailed and intricate designs.

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Answer: B

Explanation:

Due to the rubbing of the balloons on their hair, the balloons have gained negative charges which lie on the balloons surfaces. Like charges will repel each other according to the Coulomb force

Answer:

LETTER C IS THE ANSWER

Explanation:

this is my answer

The best way to increase the mechanical advantage of the class 2 lever is to move the load closer to the fulcrum.

option B.

The mechanical advantage of a simple machine is the ratio of output force to input force. It is also the ratio of load overcame by a simple machine to the effort applied by the simple machine.

Mathematically, the formula for mechanical advantage of a simple machine is given as;

M.A = output force / input force

M.A = Load / effort

Efficiency of machine = M.A/V.R x 100% = ( distance travelled by load x load ) / ( distance travelled by effort x effort )

Thus, to increase the mechanical advantage requires decrease in the distance travelled by the effort.

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All we need to do in order to find out the direction is to take into account the sign of the charge. As they are both positive, the particles will repel each other, which can be seen on the following drawing:

Thus, particle q2 will try to push particle q1 to the left

The answer is: -

False

Virtual image cannot be caught on a screen

The new speed of the glider is 42.2 m/s.

The new speed of the glider can be calculated using the principle of the law of conservation of energy.

Note: Total energy of the glider before the dive = Total energy of the glider after the dive.

Simplifying the equation above,

make V the subject of the equation.

From the question,

Substitute these values into equation 2.

Hence, The new speed of the glider is 42.2 m/s.

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The centripetal acceleration of the person running around the Olympic track will be 3.3m/s².

When the person is running on a circular Olympic track of curve 36.5m with a speed of 11m/s, the person will have some centripetal acceleration equal to a,

Now generally the centripetal acceleration of any body running in a circular manner is given by the relation,

a = v²/R

Where,

v is the speed at which the person is running and R is the radius of the circular track.

Now, putting the value used to find the centripetal acceleration of the person running on the Olympic track.

a = (11)²/36.5

a = 3.3m/s²

So, the centripetal acceleration of the person is 3.3m/s².

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Answer:

Because rice mill is more advanced than dhiki.

It is the developed form of the dhiki.

The question addresses the stability of the atmosphere and the factors that determine convective stability or instability. It also explains the difference between the adiabatic lapse rate of dry air and wet saturated air.

a) The stability of the atmosphere is determined by the temperature profile and relative densities of the air cell and atmosphere. If the temperature of the surrounding atmosphere decreases with altitude at a rate greater than the adiabatic lapse rate of the air cell, the atmosphere is considered convectively stable.

In this case, the air cell will return to its original position. Conversely, if the temperature of the surrounding atmosphere decreases slower than the adiabatic lapse rate of the air cell, the atmosphere is convectively unstable. The air cell will continue moving in the same direction.

b) The adiabatic lapse rate refers to the rate at which temperature decreases with altitude for a parcel of air lifted or descending adiabatically (without exchanging heat with its surroundings). The adiabatic lapse rate of dry air is higher (around \(9.8^0C\) per kilometer) compared to the adiabatic lapse rate of wet saturated air (around 5°C per kilometer).

This difference arises because when water vapor condenses during the ascent of saturated air, latent heat is released, reducing the rate of temperature decrease. A diagram can illustrate the difference between the two lapse rates, showcasing their respective slopes.

c) When wet unsaturated air rises from the ocean surface, its temperature decreases at a rate equal to the dry adiabatic lapse rate. However, if the ambient lapse rate (temperature decrease with altitude) is higher than the adiabatic lapse rate for dry air, a temperature inversion layer forms at higher altitudes.

In this inversion layer, the temperature increases with altitude instead of decreasing. A schematic diagram can depict the temperature changes of the wet air in comparison to the ambient temperature, showing the inversion layer.

Cumulus clouds form at the altitude where the rising moist air reaches the level of the temperature inversion layer. These clouds are formed due to the condensation of water vapor as the air parcel cools to its dew point temperature.

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Answer:

Explanation:

And the condition of problem N 6 ???

Answer:

C the baseball began at rest and rolls at a rate of 14.7 m/s after 1.5 seconds

A Year on mercury is less than 40% as long as a year on earth.

According to Kepler's Third Law, the cubes of the semi-major axes of the orbits of the planets are directly proportional to the squares of the planets' orbital periods. According to Kepler's Third Law, as an orbiting planet's radius increases, so does the time of its orbit around the Sun. Thus, we learn that Mercury, the innermost planet, completes its orbit of the Sun in just 88 days. Saturn needs 10,759 days to complete the same task as the earth does in 365 days. Despite the fact that Kepler had no knowledge of gravitation at the time he developed his three laws, Isaac Newton used them to derive his theory of universal gravitation, which explains the mysterious force behind Kepler's Third Law.

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Answer:

A. Gradulated Cylinder

A graduated cylinder is a tool that should be used to measure the mass of an object, first by measuring the volume of the substance and then calculating the mass by using the density, therefore the correct answer is option A.

A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.

Any additional quantity of that type can be stated as a multiple of the measurement unit.

stopwatch is used to measure the time period.

scale is used to measure the length.

A thermometer is a tool used to measure the temperature.

The correct response is option A because a graduated cylinder should be used to determine an object's mass by first determining the substance's volume and then calculating the mass using a density.

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Answer:

6.5

Explanation:

Because 1.5+5=6.5

Answer:

60.18 N

Explanation:

Given that:

The force applied on the sled = 100 N

Suppose, the angle between the sled rope and the ground = 53°

The horizontal force which acts  in the horizontal direction can be expressed as:

\(F_x = F \ cos \theta\)

\(F_x = 100 \ cos (53)\)

\(F_x = 60.18 \ N\)

But if the angle between the sled rope is parallel to the ground. Then, we use an angle on a straight line which is = 180°

\(F_x = F \ cos \theta\)

\(F_x = 100 \ cos (180)\)

= 100 × -1

= -100 N

When you walk, you are more likely to be able to walk at a constant velocity. Your walking speed varies as you walk in real-life scenarios, but you aim to maintain a steady pace or velocity. This is how you can keep track of time and distance traveled.

When you walk at a constant velocity, you move forward with a steady speed and direction. The velocity is defined as the rate at which an object's position changes with respect to time. When you walk, you typically aim to move forward with a constant velocity, which is the speed at which you walk and the direction you walk. In certain situations, a constant velocity is ideal, such as when you are traveling long distances and want to arrive at your destination at a certain time. To ensure that you walk at a constant velocity, you need to maintain a steady pace by keeping your stride consistent and avoiding unnecessary stops or changes in direction. Walking with a constant velocity involves maintaining a steady speed and direction. It is possible to achieve this by maintaining a constant pace, keeping your stride consistent, and avoiding any unnecessary stops or changes in direction.

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Answer:

force gravitational attraction =18.69×10^-14

hope it helps.

Answer:

Civil law deals with behavior that constitutes an injury to an individual or other private party, such as a corporation. Examples are defamation (including libel and slander), breach of contract, negligence resulting in injury or death, and property damage.

Explanation:

Answer:

Faster

Explanation:

The impulse-momentum theorem can be utilized: Change in momentum is an impulse. The impulse is known to be 0.05 Ns (1008+10011). Therefore, the force exerted by each player is equal to 1008+10011 N divided by 0.05.

According to the impulse-momentum theorem, the change in an object's momentum will be proportional to the impulse applied to it. Now that we understand the impulse-momentum theorem, we can see that the same velocity change can be caused by applying a small net force for a long time and a large net force for a short time.

p equals F net t. The impulse-momentum theorem is derived from the equation F net t, which is also referred to as impulse.

The use of airbags in automobiles is one example. Because they can reduce the force exerted on an object involved in a collision, airbags are used in automobiles. By extending the amount of time required to stop the driver and passenger's momentum, airbags accomplish this.

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Answer:

A. the spread of soccer as a sport across countries

Explanation:

The physical characteristic of matter that causes it to feel a force when exposed to an electromagnetic field is called electric charge. The two types of electric charges that protons and electrons most frequently carry are positive and negative charges.

Find the force experienced by a particle with a charge of (3x10^-8 c) when it is a distance of (2x10^-2 m) away from a second particle with a charge of (6x10^-7 c)

Each fee = -Q

L is the length between charges.

decreased force =

As seen above, two particles, each with a charge of Q, are locked at a distance L apart. A net electric force F acts on every atom. The initial two particles are now locked on either side of a particle with a charge of +q.

Having said that,

The pressure at either end is

...(I)

If the charge q is positioned in the middle, then

Each end charge is under a force of

....(II)

We must determine the value of q.

Equation use (II)

Fill out the formula using the value of F.

Consequently, q is valued at q/8

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The dielectric constant of the unknown material is 2.3.

Dielectric constant is referred as a relative permittivity or amount of charge required to produce one unit of electric flux in a given medium.

Given the speed of light in vacuum c =3 x 10⁸ m/s and the speed of light through an unknown material v = 1.98 x 10⁸ m/s.

The dielectric constant is related to the velocity by the following relation,

v = c/√K

Rearranging for dielectric constant, we get

K = (c/v)²

Substitute the value into the expression ,we get

K =(3 x 10⁸ / 1.98 x 10⁸)²

K = 2.3

Thus, the dielectric constant of the unknown material is 2.3.

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The required speed of the the can when the spring is stretches is calculated to be 2.39 m/s.

The magnitude of acceleration of the block is calculated to be 4.12 m/s².

The force constant of the spring is given as k = 76 N/m.

Mass of the beans is given as 5 kg.

The constant horizontal force applied is given as 51 N.

The stretching in the spring is given as 0.4 m.

The expression to calculate speed of the block for the stretch in the spring is,

F x - 1/2 k x² = 1/2 m v²

v = √2 (F x - 1/2 k x²)/m

Putting all the values, we have,

v = √2 (51× 0.4 - 1/2× 76 × (0.4)²)/5 = √2 (20.4 - 6.08)/5 = 2.39 m/s.

Thus, the speed of the can for stretch in the spring is 2.39 m/s.

The relation to calculate the magnitude of acceleration of the block is,

a = (F - k x)/m = (51 - 76× 0.4)/5 = 4.12 m/s²

Thus, the magnitude of acceleration is calculated to be 4.12 m/s².

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The paint vibrates in response to pressure waves created by the speaker, demonstrating energy transfer as a wave.

The lab set-up with paint poured onto a speaker and afterward turned on with clearly music playing shows energy being moved as a wave thanks to air. At the point when the speaker is turned on, it makes the stomach of the speaker vibrate, which thusly makes the air particles around it vibrate too.

These vibrations make pressure waves all around, which travel outwards from the speaker this way and that.As the tension waves travel through the air, they make the paint on the speaker vibrate and move too, making a noticeable example.

This example is made in light of the fact that the paint isn't quite as adaptable as air, so it doesn't vibrate similarly. All things considered, it moves because of the strain waves, making a noticeable portrayal of the wave energy.

In this manner, the lab set-up shows how energy is moved as a wave through a medium. The energy is conveyed by the tension waves, which cause development and vibrations in the medium.

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Answer:

Weight varies with location depending upon the acceleration due to gravity eg. for a mass m = 10kg on Earth it`s weight is W = mg = 10 x 10 = 100N.

Explanation:

Near Earth's surface, the weight of an object in newtons is  10 times its mass in kilograms. This relationship of the acceleration is due to gravity on Earth, which is 9.81 m/s².

Mathematically, it can be expressed as:

Weight (in newtons) = Mass (in kilograms) × Acceleration due to gravity

So, an object with a mass of, for example, 5 kg, its weight near the Earth's surface would be:

Weight = 5 kg × 9.81 m/s² = 49.05 N

The weight in newtons is roughly 10 times the mass in kilograms of objects near the Earth's surface. The given statement is correct.

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