Two identical 1500k car moving perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at15 m/s due east. What is the total momentum of the system?

The percentage uncertainty in the momentum of the electron is approximately 6.18%.

To calculate the percentage uncertainty in the momentum of an electron, we can use the uncertainty principle, which states that the product of the uncertainties in position (Δx) and momentum (Δp) must be greater than or equal to the reduced Planck's constant (h-bar, ħ), which is h divided by 2π:

Δx Δp ≥ ħ/2π

Given that the position uncertainty (Δx) is 0.1 nm (1 nm = 1 × 10⁻⁹ m) and the electron momentum (p) is 1.7 × 10⁻²³ kg·m/s, and using the value of Planck's constant (h = 6.62 × 10⁻³⁴ J·s), we can calculate the uncertainty in momentum (Δp) and then find the percentage uncertainty.

First, let's convert the position uncertainty to meters:

Δx = 0.1 nm = 0.1 × 10⁹ m

Now, rearranging the uncertainty principle equation to solve for Δp:

Δp ≥ ħ / (2πΔx)

Substituting the known values:

Δp ≥ (6.62 × 10⁻³⁴ J·s) / (2π × 0.1 × 10⁻⁹ m)

Δp ≥ 1.05 × 10⁻²⁴ kg·m/s

The uncertainty in momentum (Δp) is at least 1.05 × 10⁻²⁴ kg·m/s.

To calculate the percentage uncertainty, we can use the formula:

Percentage uncertainty = (Δp / p) × 100

Substituting the values:

Percentage uncertainty = (1.05 × 10⁻³⁴ kg·m/s) / (1.7 × 10⁻²³ kg·m/s) × 100

Percentage uncertainty ≈ 6.18%

Therefore, the percentage uncertainty in the momentum of the electron is approximately 6.18%.

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The saturation of the soil sample is 0.16 and the dry unit weight is X kN/m3.

The saturation of the soil sample can be calculated using the relationship between porosity and saturation. Porosity (n) is defined as the ratio of the void volume to the total volume of the soil sample. It is given that the porosity of the soil sample is 0.49. Since porosity is the ratio of void volume to total volume, the saturation (S) can be calculated as 1 minus the porosity:

Saturation (S) = 1 - porosity = 1 - 0.49 = 0.51

To calculate the dry unit weight (γd) of the soil sample, we need to consider the specific gravity (Gs) and the moisture content (w). The dry unit weight is the weight of the solid particles per unit volume of the soil sample. The formula to calculate the dry unit weight is:

γd = Gs * γw / (1 + w)

Given that the specific gravity (Gs) is 2.41 and the moisture content (w) is 0.33, we can substitute these values into the formula to calculate the dry unit weight.

Therefore, the saturation of the soil sample is 0.16, and the value of the dry unit weight is X kN/m3.

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The central diffraction peak is  0.039946m.

\(D\)= Screen distance = 2.50 m

\(d\)= Slit width = 0.0368 mm = 0.0368 x \(10^{-3}\) m

= Wavelength of light = 588 x \(10^{-9}\) m

ω= width of the central diffraction peak

The width of the central diffraction peak is given as

ω = \(\frac{D}{d}\)×λ

ω= (2.50)(588 x 10⁻⁹)×\(\frac{1}{0.0368 * 10^{-3}}\)

ω= 39945.65×\(10^{-6}\)

ω= 0.039946m

Diffraction is defined because of the interference or bending of waves across the corners of an impediment or thru an aperture into the vicinity of the geometrical shadow of the obstacle/aperture. The diffracting object or aperture successfully will become a secondary source of the propagating wave.

the diffraction phenomenon is defined by means of the Huygens–Fresnel principle that treats each factor in a propagating wavefront as a group of character spherical wavelets. The function bending sample is most reported while a wave from a coherent supply (inclusive of a laser) encounters a slit/aperture that is comparable in size to its wavelength, as shown in the inserted image.

This is because of the addition, or interference, of different factors at the wavefront (or, equivalently, each wavelet) that journey by way of paths of different lengths to the registering surface.

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2.15 s time  it take the can to hit the floor when a can of bean rolls off a horizontal table with a velocity of 0.44 m/s

velocity=distance/time

time=distance/velocity

time=0.95/0.44

time=2.15 s

A vector number called velocity can be used to express "the speed at which an object changes its location." Imagine someone moving quickly while taking two steps forward and two steps back, all while remaining in the same place. A vector quantity is velocity. As a result, velocity is aware of direction. When calculating an object's velocity, the direction must be taken into consideration. A speed of 55 miles per hour is insufficient detail. The velocity of the item must be properly described in terms of the direction. Simply explained, the velocity vector's direction shows how an item is moving.

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The six steps of the consumer buying process can be related to the six steps of the selling process as follows:

1. Need recognition (Step 1 for consumers) relates to Prospecting (Step 1 for sellers): In both cases, the process starts with identifying a need or opportunity. Consumers recognize their need for a product or service, while sellers prospect for potential customers.

2. Information search (Step 2 for consumers) relates to Pre-approach (Step 2 for sellers): Consumers gather information about available options, while sellers prepare by researching and gathering information about potential customers.

3. Evaluation of alternatives (Step 3 for consumers) relates to Approach (Step 3 for sellers): Consumers assess different products or services to make a decision, while sellers approach potential customers with their offerings and solutions.

4. Purchase decision (Step 4 for consumers) relates to Presentation and demonstration (Step 4 for sellers): Consumers make the final decision to purchase, while sellers present their products or services and demonstrate their value to potential customers.

5. Purchase (Step 5 for consumers) relates to Handling objections and negotiation (Step 5 for sellers): Consumers complete the transaction and make the purchase, while sellers handle objections, negotiate terms, and close the sale.

6. Post-purchase evaluation (Step 6 for consumers) relates to Follow-up and customer relationship management (Step 6 for sellers): Consumers assess their satisfaction with the purchase, while sellers follow up with customers, maintain relationships, and provide after-sales support to ensure customer satisfaction and foster loyalty.

In summary, the steps of the consumer buying process and the selling process align in terms of identifying needs, gathering information, evaluating alternatives, making decisions, completing transactions, and maintaining relationships with customers. Both processes aim to fulfill needs and create mutually beneficial exchanges between consumers and sellers.

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When you eat pizza, chemical energy is transferred to mechanical energy.

Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to a physical object (body) before work can be done.

In Science, there are different forms of energy and these include the following;

When a person eats pizza, the chemical energy contained in this snack is transferred to mechanical energy.

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The possible valid accesses for an array a and vector v, each with 10 elements is given below:Array: a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9]Vector: v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]

The term array is used to define a set of similar data types that are stored in contiguous memory blocks. The index of an array starts at 0, which means the first element of the array is stored at index 0. In the case of arrays, the elements must be of the same data type.The term vector is defined as a dynamic array, which means that the size of the vector can be changed during runtime. Vectors are defined in the same way as arrays, except that they have a dynamic size limit and can be easily resized.

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Answer:

Flift=5.00×10³ N

Fhorizontal=0.50×10³ N

Fg=4.80×10³ N

Explanation:

A free-body diagram of the glider.

pretend this is a number line

^

|  Flift

|  

|

|---->Fhorizontal

|

| Fg

|

∨

hope this helps! :)

Answer:

Touka Kirishima <3

Explanation:

Answer:

juuzou

Explanation:

he bad##s

Its 30 kg cause I got 30 kg dude.

i’ve done it on paper.

The net displacement of the body is

∆x = (4, 3, 3) m - (-5, 3, 1) m = (9, 0, 2) m

so the work done by F = (3, 0, 4) N in the direction of ∆x is

F • ∆x = (3, 0, 4) • (9, 0, 2) N•m = (27 + 0 + 8) N•m = 35 J

The angle between the force and initial velocity v₀ is θ, such that

F • v₀ = ||F|| ||v₀|| cos(θ)

(3, 0, 4) • (6, 1, 1) N•m/s = √(3² + 0² + 4²) √(6² + 1² + 1²) cos(θ) N•m/s

==>   cos(θ) = (18 + 0 + 4) / (√25 × √38) = 22/(5√38)

==>   θ = arccos(22/(5√38)) ≈ 44.5°

Answer:

The total frictional force equals 60 N

Explanation:

We know that F - f = ma where F is the applied force, f is the frictional force, m the mass of the object and a its acceleration.

Now, since the cart moves with constant velocity, its acceleration is zero. So, a = 0.

So F - f = ma

F - f = m(0) = 0

F - f = 0

So, F = f

From the above, we see that the frictional force equals the applied force which is equal to 60 N.

So, f the total frictional force equals 60 N

Answer:

An interaction between electricity and magnetism produces an electromagnet, while a permanent magnet induces the paper clip's magnetic field.

Explanation:

A p e x :)

The load value for interrupts every one milliseconds is

\(\begin{aligned}&\mathrm{val}=1 \times 10^{-3} \times 4.094 \times 10^6 \\&\Rightarrow \mathrm{val}=4094\end{aligned}\)

The load value for interrupts every millisecond is

\(\begin{aligned}&\mathrm{val}=1 \times 10^{-6} \times 4.094 \times 10^6 \\&\Rightarrow \mathrm{val}=4.094\end{aligned}\)

However, we can only load integer values, therefore we apply

\(\Rightarrow v a l \approx 4\)

When the delay is 1 ms, it is accurate, but when the delay is 1 us, it is a little bit less. We are unable to provide an accurate 1 us delay interrupt because this requires a fractional value was calculated.

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Answer:

Asteroid 1 has more mass than asteroid 2

Explanation:

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thenoobygamerpro

01/25/2020

Physics

Middle School

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Asteroid 1 moving 8km/s right asteroid 2 moving 16 km/s left before the crash. After the crash asteroid 1 is moving 4 km/s left and changed speed bu 12km/s. Asteroid 2 moving 2km/s left and changed speed by 14km/s

Two asteroids crashed. The crashed caused both asteroids to change speed. Scientist want to use the change in speed and motion to figure out which asteroid has more mass. Based on the information in the diagram. which statement is correct? In your answer explain what the forces were like and why the asteroids changed motions

Asteroid 1 has more mass than asteroid 2

Asteroid 1 and asteroid 2 are the same mass

Or asteroid 1 has lees mass than asteroid 2

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Answer: Asteroid 1 has more mass than asteroid 2

Explanation:

We can use the conservation of momentum law to find the answer. So, according to this law:

"If two objects or bodies are in a closed system and both collide, the total momentum of these two objects before the collision will be the same as the total momentum of these same two objects after the collision".

This means the momentum before the collision or crash () is equal to the momentum after the collision ():

(1)

Before the crash:

(2)

Where:

is the mass of the first asteroid

is the velocity of the first asteroid

is the mass of the second asteroid

is the velocity of the second asteroid

(3)

After the crash:

(4)

Where:

is the final velocity of the first asteroid

is the final velocity of the second asteroid

(5)

Substituting (3) and (5) in (1):

(6)

Grouping similar terms:

(7)

Then:

(8) This means  must be multiplied by 1.16 km/s in order to make this side of the equation equal to .

Answer:

B

Explaination:

Radiation refers to the emission of energy in rays or waves. Heat moves through space as energy waves.

Answer:

Radiation

Explanation:

Heat can be transferred though thin air

For a light spring that obeys Hooke's law and is stretched by 2.94 cm then: (a) Force constant of spring = 843.54 N/m, (b) Distance the spring stretches = 1.45 cm, (c) Work by external agent = 1.365 J.

(a) To determine the force constant of the spring, we can use Hooke's law, which states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position.

Hooke's law can be written as:

F = k * x

where:

F is the force applied to the spring,

k is the force constant (also known as the spring constant), and

x is the displacement from the equilibrium position.

In this case, the displacement (x) is 2.94 cm = 0.0294 m, and the force (F) is the weight of the object suspended from the spring, which is equal to the gravitational force acting on the object.

F = m * g

where:

m is the mass of the object, and

g is the acceleration due to gravity (approximately 9.8 m/s^2).

m = 2.50 kg

x = 0.0294 m

g = 9.8 m/s^2

Substituting these values into the equation:

k * x = m * g

k = (m * g) / x

= (2.50 kg * 9.8 m/s^2) / 0.0294 m

Calculating the value:

k ≈ 843.54 N/m

Therefore, the force constant of the spring is approximately 843.54 N/m.

(b) To determine the distance the spring stretches when a 1.25-kg object is suspended from it, we can use Hooke's law again. We will use the same force constant (k) that we calculated in part (a).

m = 1.25 kg

Using Hooke's law:

F = k * x

Solving for x:

x = F / k

Calculating the value:

x = (m * g) / k

= (1.25 kg * 9.8 m/s^2) / 843.54 N/m

x ≈ 0.0145 m = 1.45 cm

Therefore, the spring stretches approximately 1.45 cm when a 1.25-kg object is suspended from it.

(c) To calculate the amount of work an external agent must do to stretch the spring 6.40 cm from its unstretched position, we can use the equation for work:

Work = (1/2) * k * x^2

x = 6.40 cm = 0.064 m

Substituting the values:

Work = (1/2) * k * x^2

= (1/2) * 843.54 N/m * (0.064 m)^2

Calculating the value:

Work ≈ 1.365 J

Therefore, the amount of work an external agent must do to stretch the spring 6.40 cm from its unstretched position is approximately 1.365 J.

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Answer:

Specific heat capacity means that in order to raise copper by 1C per kg, it needs 380J of heat energy.

Answer:

44 ohms.

Explanation:

R for V (according to Ohm's law). This second formula is more frequently used in practice to calculate resistive heating, whereas the first formula has other, more general applications. As we might infer from the equation, the units of watts also correspond to amperes2 x ohms (A2 x Ω).

The omnidirectional pick-up pattern is best for picking up sound equally from all directions. an omnidirectional pick-up pattern is a versatile option that can be useful in a variety of recording scenarios.

An omnidirectional microphone is designed to capture sound from all directions, providing an even and balanced response across the entire frequency range. This makes it a great choice for recording group discussions, ambient sounds, or any situation where you want to capture the overall sound of a space. Additionally, an omnidirectional pick-up pattern can reduce the need for precise microphone placement, which can be helpful in certain recording situations.

Omnidirectional microphones are designed to capture sound from all directions, making them ideal for situations where you want to record sound from multiple sources or in a 360-degree environment. This pattern is suitable for conference calls, interviews, and field recordings where the goal is to capture the entire sound atmosphere.

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Surface-level diversity refers to the easily observable characteristics of individuals while deep-level diversity refers to the less visible characteristics. The link between attitude and behavior is that our attitudes often influence our behaviors.

Race, age, gender, and physical appearance are some of the characteristics under surface-level diversity. On the other hand, characteristics such as personality, values, beliefs, and attitudes, are some of deep-level diversity.

The link between attitude and behavior is that our attitudes often influence our behaviors. For example, if someone has a positive attitude towards exercise, they are more likely to engage in physical activity. However, it is important to note that attitudes do not always predict behavior, as there can be other factors that influence our actions, such as social norms and external pressures.

In the context of diversity, understanding both surface-level and deep-level diversity can help organizations create a more inclusive and respectful workplace. By acknowledging and valuing the differences among employees, organizations can create a positive work environment and foster better teamwork and collaboration.

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Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

Explanation:

There are two types of changes that occur in Chemistry viz; physical change and chemical change. Physical changes are those changes do not involve any change in the chemical composition of the substances involved while a chemical change involves a change in chemical composition.

In a chemical change, there are characteristics signs such as formation of gaseous bubbles, solid precipitates etc. as the information in this question depicts. According to this question, Cash mixes two clear liquids together which results in the formation of bubbles and a white solid that settles at the bottom. Hence, THIS REPRESENTS A CHEMICAL CHANGE

Most chemical changes are usually irreversible i.e. they don't return to their original form. Hence, even if Cash heats it, the white solid will remain.

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

Answer:

10

Explanation:

Givens

vi = 20 m/s

vf = 60 m/s

t = 4 second.

Formula

a = (vf - vi) / t

a = (60 - 20)/4

a = 40 / 4

a = 10 m/s^2

The mass m of the block on the left is 16 Kg , correct answer.

What is friction?

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.

Think about how a 100 kilogramme block would move.

beginning speed (Vi) = 0 m/s

a stands for speed.

d=displacement=1 m

Time taken is t = 0.53 seconds.

Using the formula:

d=Vi t+(0.5)a t2

1 = (0) (0.53) + (0.5) a (0.53) (0.53)

2

a = 7.12 m/s2

Acceleration for an at wood machine is expressed as

7.12 = (100 - m) (9.8)/ (100 + m)

m = 15.84 kg

m = 16 kg

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Answer:

i = 1.2 [amp].

Explanation:

In order to find the current in the circuit, we must perform a sum of voltages equal to zero, around the mesh.

∑V = 0

Let's take the direction of the current as shown in the drawing Clockwise.

\(-3+(i*2)+(i*1)+(i*2)+9=0\\6+(5*i)=0\\5*i = - 6\\i = - 1.2[amp]\)

Note: The negative sign means that the current moves in a counterclockwise direction.

A galaxy cluster contains between 50 to 1,000   galaxies.

A supercluster's galaxy clusters are frequently millions of light years apart from one another, making it difficult to estimate their distance with accuracy. The distance between us and the galaxy clusters in the Hydra Supercluster, which is around 100 million light years long, ranges from 105 to 160 million light years.

In accordance with this theory, groupings of dozens of galaxies are gravitationally drawn together to create galaxy clusters, which then combine to form clusters of hundreds or even thousands of galaxies.

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The standard deviation is more affected by skewness compared to the IQR. So, correct option is C.

IQR stands for Interquartile Range, which is a measure of variability or dispersion in a set of numerical data. It is defined as the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of the data. The IQR is a robust statistic, meaning that it is not sensitive to outliers or extreme values in the data. It is a commonly used statistic in descriptive statistics and data analysis and is used to summarize the spread or distribution of a set of data. The IQR is a useful tool for identifying outliers in a dataset and is often used in conjunction with box plots to visualize the distribution of data.

Skewness refers to the degree of asymmetry in a probability distribution. When a distribution is positively skewed (tail extends to the right), it means that there are more high values compared to low values, and vice versa for negatively skewed distributions. In such cases, the standard deviation, which is a measure of the spread of the data, is likely to be larger than it would be for a symmetrical distribution.

On the other hand, the interquartile range (IQR), which is the difference between the 75th and 25th percentiles, is less affected by skewness because it only considers the middle 50% of the data and ignores the outliers. Therefore, the standard deviation is more affected by skewness compared to the IQR.

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Answer:

The best time to view the spectacle on Dec. 21 will be around an hour after sunset.