Find the de Broglie wavelength of a baseball pitched at a speed of 44.6 m/s . Assume that the mass of the baseball is 0.143 kg.
Express your answer in meters

Answer:

Sustainable energy is essential to meet uncontrolled rising demand for energy, reduce pollution and shift to resources that can be used again and again.

Explanation:

Considering the Sustainable Goals floated by United Nation, it is essential for all countries to improve their score in all the SD goals.

One of the SD goal is to shift to sustainable energy.

Sustainable energy is essential from following three points

- Reuse of energy source again and again to outcome the fear of resource depletion

- Sustainable energy source shall ensure cleaner environment

- Sustainable energy sources are also essential to meet the rising consumption of energy with time all across the globe.

Some common examples are - Solar energy, Wind Energy, Energy from nuclear fuels etc.

Now our wavelength is getting longer because the waves are stretching out. This makes the 1. Frequency is lower as well as the pitch we hear.

Wavelength is the gap among equal factors (adjacent crests) in the adjacent cycles of a waveform sign propagated in the area or alongside a twine. In wi-fi systems, this duration is generally laid out in meters (m), centimeters (cm), or millimeters (mm).

Equation of the wavelength, we will tell that the wavelength of a wave is inversely proportional to its frequency, i.e., because the frequency of a wave increases, its wavelength decreases.

A better-frequency sound has a better pitch, and a decreased-frequency sound has a lower pitch. In discern 10.2 sound A has a better pitch than sound B. for example, the chirp of a bird would have an excessive pitch, but the roar of a lion could have a low pitch. The human ear can discover a huge variety of frequencies.

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Disclaimer:- your question is incomplete, please see below for the complete question.

Now our wavelength is getting longer because the waves are stretching out. This makes the _________ lower as well as the pitch we hear.

1. Frequency

2. Loudness

3. Amplitude

The repulsive electrical force  between protons is: \(F = 9.279 \times 10^{-8} \,{\rm{N}}\)

The repulsive electrical force between two protons 3.5 * 10-15 m apart from each other in an atomic nucleus is calculated by Coulomb's law, which states that the force between two charged particles is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

So, the repulsive force between two protons 3.5 * 10-15 m apart is given by:

\(F = (1.602 \times 10^{-19})^2 / (3.5 \times 10^{-15})^2\)

\(F = 9.279 \times 10^{-8} \,{\rm{N}}\)

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The thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm is 200 nm.

The wavelength of mild, λ = 500 nm

= 500 x 10^-9 m

Refractive index of oil, n1 = 1.25

Refractive index of water, n2 = 1.33

The thickness of the movie, d =?

For a sturdy mirrored image, m = 1

Wavelength, λ= 2 n1 d / m

Thickness, d = λ m / 2 n1

= 500 x 10 -9 * 1 / ( 2 * 1.25 )

= two hundred x 10 -nine m

= 2 hundred nm.

Wavelength is the gap between the same factors (adjacent crests) within the adjacent cycles of a waveform signal propagated in space or alongside a wire. In wireless systems, this duration is usually specified in meters (m), centimeters (cm), or millimeters (mm).

Wavelength may be defined as the space between two successive crests or troughs of a wave. it is measured within the route of the wave.

Wavelength is the distance among two adjacent crests or troughs of a waveform signal propagated in space or along a wire. The wavelength of a wave is usually specified in meters (m), centimeters (cm), or millimeters (mm). The wavelength is inversely related to frequency.

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Answer:

the answer is A

Explanation:

Explanation:

Image Shadow

2. We are able to see images when light refraction enters our eyes.

In the case of shadow no light enters our eyes.

3. Image contains colour, structure etc. of the object.

Shadow does not give any information about the object as it is colourless

Answer:

We know that an image is a picture of an object while shadow is formed an object comes in between the surface and light. ... The formation of image takes place when the light rays are reflected by an object. The formation of shadow takes place when the light falls on an opaque object.

Considering the definition of momentum, the momentum of a 1000-kg car that is driving 60 m/s east is 60,000 Ns.

Linear momentum or amount of movement is defined as the magnitude that allows measuring the capacity of a body to exert a force on another that is in its path.

The momentum p is a vectorial magnitude that relates the mass and speed of a body through the following expression:

p= m×v

where:

In this case, you know:

Replacing in the definition of momentum:

p= 1000 kg× 60 m/s

Solving:

p= 60,000 Ns

Finally, the momentum of a 1000-kg car that is driving 60 m/s east is 60,000 Ns.

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A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 L to 15 L. The final pressure is 0.67 atm.

A physics principle states that a gas's volume changes inversely with applied pressure while the gas is kept at a constant temperature. Boyle's law states that in constant temperature the  variation volume of gas is inversely proportional to the applied pressure. According to Boyle's law, a gas's pressure is inversely proportional to its volume while the gas is at constant temperature.  To put it another way, we can argue that volume and pressure are inversely proportional to one another, but only for gases with constant mass and temperature.

The formula is,

P₁ X V₁ = P₂ X V₂

Where,

P₁ is initial pressure = 1 atm

P₂ is final pressure =  ? (Not Known)

V₁ is initial volume  = 10 L

V₂ is final volume = 15 L

Now put the values in the formula,

1 x 10 = P₂ x 15

10 = 15 P₂

P₂ = 0.67

Therefore, the final pressure is 0.67 atm.

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Answer:

A. Ultraviolet

Answer: A.Ultraviolet

Explanation:

just did it

All of the above are manifestations of solar magnetic activity. The sun's magnetic field plays a crucial role in shaping its atmosphere and driving various phenomena such as sunspots, prominences, and flares. Sunspots are dark, cooler regions on the sun's surface caused by intense magnetic fields that inhibit the flow of heat from below.

Prominences are massive eruptions of gas and plasma that extend outward from the sun's surface, often following magnetic field lines. Flares, on the other hand, are sudden and intense releases of energy that can emit radiation across the entire electromagnetic spectrum, including X-rays and radio waves. These phenomena are all interconnected and are driven by the complex interplay between the sun's magnetic field and the plasma that makes up its atmosphere.
The manifestations of solar magnetic activity include sunspots, prominences, and flares. All of these phenomena are associated with the sun's magnetic field and its interactions with the solar plasma. So, the correct answer to your question is "all of the above."

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Answer:

(a)   the gravitational influence on visible matter can not be explained by matter that can be seen.

The answer is (D) the pressure increases by a factor of 2.

Assuming that the container is rigid and does not change volume, the pressure inside the container is directly proportional to the number of atoms in the container according to the ideal gas law:

P = nRT/V

where P is the pressure, n is the number of moles (which is proportional to the number of atoms), R is the gas constant, T is the temperature, and V is the volume.

If the number of atoms is increased by a factor of 2 while the temperature is held constant, the number of moles of gas in the container is also doubled. Therefore, the pressure inside the container will also double.

Rewrite the ideal gas law as:

P1V = n₁RT

where the subscript 1 refers to the initial state of the system. If we double the number of atoms in the container while holding the temperature constant, we get:

P₂V = n₂RT

where the subscript 2 refers to the final state of the system. Since the temperature is constant, we can equate the right-hand sides of these two equations:

n₁RT = n₂RT

Since the number of atoms is doubled, we have n₂ = 2n₁. Substituting this into the equation above gives:

P₂V = 2n₁RT

Solving for P₂, we get:

P₂ = (2n₁RT) / V

Since n₁, R, and T are constants and V is also constant, we see that P is twice P₁.

Therefore, the answer is (D) the pressure increases by a factor of 2.

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The force of gravity is the attraction exerted on an object, while volume refers to the amount of matter in a given sample of a substance.

The force of gravity is a fundamental force in nature that attracts objects towards each other. It is commonly experienced as the force that pulls objects towards the Earth's surface.

The magnitude of the gravitational force depends on the masses of the objects and the distance between them. Gravity is responsible for keeping celestial bodies in orbit, creating tides, and determining the weight of objects.

On the other hand, volume is a measure of the amount of space occupied by a substance. It is a property that describes the extent or size of an object or a sample of matter.

Volume can be determined by measuring the dimensions of an object or by calculating the displacement of a substance in a container. The volume of an object is independent of external factors such as its location or the presence of gravity.

It is an essential parameter in various scientific fields, including chemistry, physics, and engineering.

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A third power of 50 is 125,000.

Why it works: 53 = 5 x 5 x 5 = 125. 53 is also equivalent to 5 cubed. The answer obtained when a number (x) is multiplied by itself three times is known as the cube of that number. How many times the base would need to be multiplied by itself to get the right value is indicated by a number's "power."

Yes, 5+5 equals 10.

50 to the third power means multiplying 50 by itself three times, which can be written as:

50 x 50 x 50 = 125,000

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Answer:

It will maintain its state of motion

Explanation:

The object would maintain its state of motion.

If the size and direction of the forces acting on an object are exactly balanced, then there is no net force acting on the object and the object is said to be in equilibrium.

Equilibrium, in physics, the condition of a system when neither its state of motion nor its internal energy state tends to change with time.

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If air resistance is negligible and our toy dart cannon generates a maximum initial velocity of 2.78 metres per second, we can shoot a dart up to a maximum distance of 0.74 metres from the ground.

Velocity is a time-dependent measure of how quickly an object's position changes in relation to a frame of reference. The velocity of an object indicates both its direction and speed of motion. Final velocity is a vector quantity that describes the speed and direction of a moving body after it has reached its maximum acceleration. The relationship between two points in physical space is given by the formula R = v2 sin2 theta/g.

R(max) equals v2/g if theta is 45 degrees.

R = 2.7^2 / 9.8 = .74 m

R = v^2 sin 2 theta / g

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Capacity of the gas tank . . . Liters

Distance to the next town . . . Kilometers

Smaller units would produce bigger numbers.

It's best to use the units that produce the handiest, most convenient numbers.  That way, it's easier to remember the number, write it down without mistakes, and tell other people about it.

Since the unit we will use to measure the volume of gas tank is litre, because its volume is large so it is very difficult to say or learn such big quantity in small units.

Measurement is to find a number that shows the amount of something. A measurement unit is a standard quantity used to express a physical quantity.

measurement, the process of associating numbers with physical quantities and phenomena. Measurement is fundamental to the sciences; to engineering, construction, and other technical fields; and to almost all everyday activities.

So, the metric unit we would use to measure the distance to the next town is kilometer.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question is we have

force = 75 × 12

We have the final answer as

Hope this helps you

Answer:

D: 4.4m/s

Explanation:

From a known theorem the total work on a body is equal of the variation of kinetic energy:

\(W = \Delta K = K_f-K_i = \frac12 mv_f^2 - \frac12 m v_i^2\)

Taking the first and last step in the chain of equalities and replacing the values we have, we get:

\(5 = \frac12(1)v_f^2 - \frac12(1)(3)^2\\10= v_f^2 -9 \rightarrow v_f^2 = 19 \rightarrow v_f=\sqrt19 \approx 4.4m/s\)

The rescuer and victim's accceleration when 1200N of force is applied will be 0.2m/s².

forces in the y direction: upward force + down force

Due to the downward weight, this is bad. The weight of the people

W = mg

W = 120 kg  × (-9.8 )m/s²

W = -1176 Nt

Force up. This is positive because the helicopter is lifting the two people.

F = 1200 Nt

∴ F + W = 24 Nt

The direction is positive, meaning that the people are being moved up.

∵ F = ma

24 Nt = 120 kg × a

acceleration (a) = 24 Nt / 120 kg = 0.2 m/s²

What is force?

A push or pull that an object experiences as a result of interacting with another object is known as a force.

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Answer:

Perfectly elastic collisions can happen only with subatomic particles. Everyday observable examples of perfectly elastic collisions don't exist—some kinetic energy is always lost, as it is converted into heat transfer due to friction.

Answer:

See Below

Explanation:

1: Thermal  Energy

2: Chemical Energy

3: Nuclear Energy

4: Electrical Energy

5: Radiant Energy

6: Light Energy

7: Motion Energy

8: Sound Energy

There are 8 types are energy that are above.

Hope this helps.

The efficiency of the engine is 60%.

The efficiency of a heat engine describes the amount of input energy converted into useful work.

It also entails the amount of useful work done by the engine. The greater the amount of useful work done by the engine, the greater the efficiency of the engine.

The efficiency of an engine ranges from 0 to 100%.

If there four stages in the energy conversion cycle, and 10% energy is wasted in each cycle, the total energy wasted in the four cycles is calculated as;

Total wasted energy = 4 x 10% = 40%

Efficiency of the engine = Useful energy = 100% - 40% = 60%

Thus, the efficiency of the engine is the useful work done by the engine.

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The sensation of colour is seen when light falls on the eye's cones.

The retina, a component of the eye, is what detects light entering our eyes. The pupil is the black hole in the centre of the eye that lets the light into the eye.

Light-sensitive cells can be found in the retina of the eye. It contains two kinds of cells known as rods and cones. Cones are the cells of retina that produce colour sensation. These photoreceptor cells are responsible for colour vision.

Rod cells are photoreceptor cells in the retina that function in dim light better than the other type of visual photoreceptor, cone cells.

Rods are employed in peripheral vision and are often clustered at the borders of the retina.

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Answer:

The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.

Explanation:

Answer:

Mechanical waves

Answer:

F = F2 - F1     where F is the net force upwards

F = 5 - (.5 * 9.8) = (5 - 4.9) N = .1 N

Since there is a net force in the upwards direction the rocket should experience an upwards acceleration.