A 50 ohm resistor in a circuit has a current flowing through it of 2.0 A. What isthe power dissipated by the resistor? (Use P-OVI - R=V)OA. 25 WOB. 100 WC. 200 WOD. 50 W

The set A intersection set B complements \((A \ n\ B^C)\) is {5, 12}.

Venn diagram is an illustration that uses circles to show the relationships among set of numbers.

A = {3,4,5,12}

B = {3,4,7,14}

\(B^C \) = {5, 8,12}

Set A intersection set B complements \((A \ n\ B^C)\) is calculated as follows;

\((A \ n\ B^C)\) = {3,4,5,12} ∩ {5, 8,12} = {5,12}

Thus, the set A intersection set B complements \((A \ n\ B^C)\) is {5, 12}.

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Answer:

Explanation:

Pressure will expand a gas, enlarging its volume and reducing its density and concentration of particles. Pressure will magnify a gas, developing its volume and multiplying its density and concentration of particles.

Increasing the pressure of a gas is exactly the same as increasing its concentration. If you have a given mass of gas, the way you increase its pressure is to squeeze it into a smaller volume. If you have the same mass in a smaller volume, then its concentration is higher.

The population in this particular problem is the pork roast. The parameter on which the population is being evaluated is 142 degrees Fahrenheit. The sample is the three random places in the pork roast where the temperature was checked. The statistic is 152 degrees Fahrenheit, which was the minimum temperature recorded during sampling.

1. The population is the object or group on which the evaluation is being done. In this scenario, the population is the pork roast.

2. Parameter is a bar which is set for measuring a feature in the population. In this problem, Micah wants the pork roast, i.e., the population, to have a minimum temperature of 142 degrees Fahrenheit.

3. A sample is chosen at random from a given population to check if the parameter matches. In this problem, Micah checked the temperature of the pork roast at three random places to deduce the average temperature of the population.

4. The statistic is the actual measurement of the sample which is compared to the parameter. In this case, the statistic would be the average minimum temperature of 152 degrees Fahrenheit.

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Answer:

c. Double Replacement

Explanation:

As in Double Replacement reaction exchanges the cations (or the anions) of two ionic compounds.

Here, in BaCl2 , Ba has replaced with NO3 to form Ba(NO3)2

and in 2AgNo3 , Ag has replaced with Cl to form 2AgCl.

The mass of a pure platinum disc can be gotten by multiplying the density with the volume.

Therefore the mass is 2418.2 grams or 2.4182 kilograms.

A body's mass is an inherent quality. Prior to the discovery of the atom and particle physics, it was widely considered to be tied to the amount of matter in a physical body.

The kilogram is the primary mass unit in the SI.

The resistance of the body to acceleration in the presence of a net force can be measured as mass.

Due to the lower gravity on the Moon, an object would weigh less than it does on Earth while maintaining the same mass. This is due to the fact that mass, coupled with gravity, determines the strength of weight, which is a force.

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What is the mass of a pure platinum disk with a volume of 113 cm3? The density of platinum is 21.4 g/cm3.

Give your answer in grams and kilograms.

Given:

the mass of the ball is m=0.7 kg.

The acceleration in the ball is

Required: the force applied on the ball

Explanation:

The force is given by

here, F is force, m is the mass, and a is the acceleration.

Plugging all the values in the above relation, we get:

Thus, the force on the ball is 43 N.

Answer:

Gravitational force related to distance because when an object is closer to the center of the earth the stronger the gravitational force is the farther an objects it from the center of the earth the weaker the gravitational force is. For example if you are on the moon there is no gravity because the gravitational force of the moon to the center of the earth is father away then for example standing on earth.

The image distance is calculated to be 2.44 cm.

Given that, diameter of the ball is 8.9 cm

Radius of the ball = d/2 = 8.9/2 = 4.45 cm

Object distance u = 26 cm

Now let us find out the image distance using mirror formula,

1/f = 1/u + 1/v ----(1)

where, u is object distance

v is image distance

f is focal length

We know that, focal length f = r/2 = 4.45/2 = 2.23 cm

Let us substitute the values in (1),

1/v = 1/f - 1/u

1/v = 1/2.23 - 1/26

1/v = 0.45 - 0.04

1/v = 0.41

v = 2.44 cm

Thus, the image distance is calculated to be 2.44 cm.

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The distance of your hometown from school is 318.64 km.

Given data

Distance S = 190 km

Speed v = 97 km / h

Now, the time taken to travel S distance is calculated as,

t = S / v

t = 180 / 95

t = 1.958 hrs

Now, the total time is given as

Total time T = 4.0 h

So, remaining time t ' = T - t = 4 hrs - 1.958 hrs = 2.042 hrs

Now, the velocity after travel 190 km is v ' = 63 km/ h

Distance travel in this velocity S ' = v ' t '

= 128.6 km

Now, the distance of your hometown from school , S " = S + S '

= 190 km + 128.6 km = 318.64 km

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Answer:

Jim Crow Laws Effects.

User

What were Jim Crow laws? Your response should also describe at least two effects Jim Crow laws

had on the rights of Black Americans. (4 points)

ChatGPT

Jim Crow laws were a set of state and local laws in the United States, enacted between the 1870s and 1960s, that enforced racial segregation and discrimination against Black Americans. These laws were named after a popular 19th-century minstrel show character who stereotyped African Americans.

Two effects of Jim Crow laws on the rights of Black Americans were:

Limited access to public facilities: Jim Crow laws mandated that public spaces such as schools, parks, hospitals, and restaurants were segregated by race. Black Americans were often denied access to public spaces that were reserved for white people. This segregation limited the ability of Black Americans to participate fully in public life and access resources and opportunities that were available to white Americans.

Restricted voting rights: Jim Crow laws were used to disenfranchise Black Americans by making it difficult or impossible for them to vote. These laws included literacy tests, poll taxes, and other requirements that were designed to exclude Black Americans from voting. As a result, many Black Americans were unable to exercise their constitutional right to vote until the Voting Rights Act of 1965 was passed. This restriction on voting rights undermined the ability of Black Americans to participate fully in democracy and have their voices heard.

User

Gavin can type 1/2 page of his book report in 5 3/4 minutes what’s the typingrate

ChatGPT

To calculate Gavin's typing rate, we need to divide the amount he can type by the time it takes him to type it.

First, we need to convert the mixed number 5 3/4 into an improper fraction:

5 3/4 = (4 x 5 + 3)/4 = 23/4

Next, we can convert the mixed number 1/2 into an improper fraction:

1/2 = 2/4

Now, we can add the two fractions:

23/4 + 2/4 = 25/4

This means that Gavin can type 25/4 pages in 5 3/4 minutes.

To find Gavin's typing rate, we need to divide the amount he can type (25/4 pages) by the time it takes him to type it (5 3/4 minutes):

Typing rate = (25/4) / (5 3/4)

To divide fractions, we can multiply the first fraction by the reciprocal of the second fraction:

Typing rate = (25/4) x (4/23)

Simplifying the fractions, we get:

Typing rate = 25/23

Therefore, Gavin's typing rate is 25/23 pages per minute.

Answer:

r = 20 m

Explanation:

The formula for the angular momentum of a rotating body is given as:

L = mvr

where,

L = Angular Momentum = 10000 kgm²/s

m = mass

v = speed = 2 m/s

r = radius of merry-go-round

Therefore,

10000 kg.m²/s = mr(2 m/s)

m r = (10000 kg.m²/s)/(2 m/s)

m r = 5000 kg.m   ------------- equation 1

Now, the moment of inertia of a solid uniform disc about its axis through its center is given as:

I = (1/2) m r²

where,

I = moment of inertia = 50000 kg.m²

Therefore,

50000 kg.m² = (1/2)(m r)(r)

using equation 1, we get:

50000 kg.m² = (1/2)(5000 kg.m)(r)

(50000 kg.m²)/(2500 kg.m) = r

r = 20 m

The best description of a well-designed testable question is "The question is clearly stated, the question can be tested in an experiment, and the results can be measured".

This type of question is the one that focuses on facts and aims at testing a hypothesis.

Some features include:

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Answer:

b

Explanation:

Positive connotation is a specific form of reframing the presenting problem.

It is a positive explanation of the current functioning within a family system aimed at creatively circumventing resistance and negating blame by approaching the presenting problem from a position of circular causality. It evokes a positive emotional response.

The primary function of this *positive reframing technique allows the therapist to take a family systems perspective of the family and the symptomatic behaviors that have brought the family to therapy. Positive connotation is often utilized as an antecedent to the paradoxical prescription that the family continues in its current functioning.

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Answer:

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Explanation:

Answer:

1.25 g/cm^3

Explanation:

mass-30.0g

volume- 4cm×2cm×3cm=24cm^3

density?

*to find density

Density=Mass/Volume

=30÷24

=1.25g/cm^3

The degree of data stability when the measurement is replicated under identical circumstances is known as reproducibility or reliability.

Reproducibility determines how an entire study an experiment can be replicated, whereas repeatability assesses the variation in data made by a single equipment or human under similar circumstances.

Science needs reproducibility because it enables more in-depth investigation, and replication validates our findings. There are several investigations and experiments, which result in a wide range of variables, unforeseen, and things that are either outside your influence or you cannot guarantee.

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Explanation:

Stationary waves are still, they do not travel in a medium. Progressive waves travel in the medium in different phases.

hope this helps you

have a great day

Answer:

Decrease

Explanation:

Working at a constant temperature when more pressure is exerted, the volume decreases.

This is known as Boyle's law.

 According to Boyle's law;

       "the volume of a fixed mass of a gas varies inversely as the pressure changes, if the temperature is constant".

  Mathematically;

          P₁V₁  = P₂V₂

P and V are pressure and volume

1 and 2 are initial and final states.

Answer:

Hey

I'm alright and you

I also hope you're doing well

(a) The ball falls short of clearing the crossbar by 3.05 m (negative value indicates falling short).

(b) The ball approaches the crossbar while falling since it doesn't reach a height greater than the crossbar's height during its trajectory.

To solve this problem, we'll analyze the vertical motion of the ball.

(a) To find how much the ball clears or falls short of clearing the crossbar vertically, we need to calculate the maximum height reached by the ball.

The initial velocity (V0) of the ball is 23.2 m/s, and the launch angle (θ) is 52.0° above the horizontal.

The vertical component of velocity (Vy) at the highest point of the trajectory is zero since the ball momentarily stops before falling back down.

To find the time taken to reach the highest point, we can use the equation:

Vy = V0 * sin(θ)

0 = 23.2 m/s * sin(52.0°)

Solving for sin(52.0°), we find:

sin(52.0°) ≈ 0.7880

Dividing both sides by 23.2 m/s, we get:

0.7880 = sin(52.0°)

Taking the inverse sine, we find:

52.0° ≈ arcsin(0.7880)

Using a calculator, we find:

52.0° ≈ 56.43°

Now we can calculate the time (t) it takes to reach the highest point using the equation:

t = (2 * Vy) / g

Since Vy = 0, we have:

t = 0

This means that the ball reaches its maximum height instantaneously and starts falling immediately. Therefore, the ball does not clear the crossbar.

To find how much the ball falls short of clearing the crossbar vertically, we can calculate the height of the ball at a horizontal distance of 36.0 m.

Using the equation for vertical displacement, we have:

Δy = V0y * t + (1/2) * g * \(t^2\)

Plugging in the known values:

Δy = 0 * t + (1/2) * (-9.8 \(m/s^2\)) * (\(t^2\))

Since t = 0, the equation simplifies to:

Δy = 0

Therefore, the ball falls short of clearing the crossbar by 3.05 m vertically.

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The speed you must go over the bump if people in your car are to feel "weightless" is 18.52 m/s.

Weightlessness is the complete or near-complete absence of the sensation of weight. In this situation, the downward acceleration is equal to acceleration due to gravity.

a = g

v²/r = g

v² = rg

v = √rg

where;

v = √(35 x 9.8)

v = 18.52 m/s

Thus, the speed you must go over the bump if people in your car are to feel "weightless" is 18.52 m/s.

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Answer:

a)  a = 6.31 10¹⁰ m / s² , b) t = 2.06 10⁻⁵ s , c)  x = 13.39 m , d)  ΔK = 1.41 10⁻¹⁵ J

Explanation:

a) Since they indicate that the speeds are non-relativistic, we can use the kinematics relations and Newton's second law

                  F = m a

The force in electrical is

                 F = qE

                qE = m a

                a = qE / m

we calculate

                a = 1.6 10⁻¹⁹ 660 / 1.673 10⁻²⁷

                a = 6.31 10¹⁰ m / s²

b) Let's use the one-dimensional kinematics relation

                 v = v₀ + a t

as part of rest its initial velocity is zero

                 v = a t

                 t = v / a

                 t = 1.30 10⁶ / 6.31 10¹⁰

                 t = 2.06 10⁻⁵ s

c) We use the kinematics displacement equation

                 x = v₀ t + ½ a t²

initial velocity is zero

                x = ½ a t²

                x = ½ 6.31 10¹⁰ (2.06 10⁻⁵)²

                x = 1,339 10¹ m

                x = 13.39 m

d) the kinetic energy is

            ΔK = Kf -K₀

            ΔK = ½ m v² - 0

            ΔK = ½ 1.673 10⁻²⁷ (1.30 10⁶) 2

            ΔK = 1.41 10⁻¹⁵ J

Answer:

Explanation:

Given:

Four more crests pass in a time of 38.4 s and the distance between the crests is 32 m.

We have to determine five terms.

Lets start with one-one basis.

a.  

Period = Time taken by a wave to pass though.

⇒  \(P = \frac{Total\ time}{No.\ of\ waves}\)

⇒ \(P = \frac{38.4}{4}\)

⇒ \(P=9.6 s\)

b.  

Frequency = Reciprocal of time period in Hertz.

⇒ \(f=\frac{1}{T}\)

⇒\(f=\frac{1}{9.6}\)

⇒ \(f=0.104 Hertz\)

c)

Wavelength = Distance between two consecutive trough and crest.

⇒ \(\lambda = 32 m\)

d.

Speed (v) = Product of frequency and wavelength.

⇒ \(v=f\times \lambda\)

⇒ \(v=0.104\times 32\)

⇒\(v = 3.33 ms^-1\)

e)

Amplitude = The maximum displacement or half the distance from crest to trough.

⇒ Here it can't be determined.

⇒ Impossible.

Answer:

000.83

Explanation:

i dont know how to explain it bt i did something on paper for it

Answer:

  0.365 cm³

Explanation:

The change in volume is found by multiplying the coefficient of expansion by the volume and the temperature change. The temperature change is in °F, but the expansion coefficient is per °C, so we need to convert the temperature scale in the computation.

  ΔV = V·Ce·ΔT

  = (π/6·d³)(1.5×10⁻⁶/°C)((5 °C)/(9 °F))(305 °F)

  = (1436.76 cm³)(1.5×10⁻⁶/°C)(169.44 °C)

  = 0.365 cm³ . . . . increase in volume

Grouping data refers to the process of categorizing or organizing data based on specific criteria or attributes.

It involves grouping similar data points together to gain a better understanding of patterns, relationships, and trends within the dataset. By grouping data, you can simplify complex information and derive meaningful insights from large amounts of data. The purpose of grouping data is to create subsets or clusters that share common characteristics.

This enables easier analysis, summarization, and comparison of data within each group. Grouping can be performed on various types of data, such as numerical, categorical, or time-based data. Grouping data allows for the exploration of data at different levels of granularity.

For example, you can group sales data by region to analyze regional performance, or group customer data by demographics to identify specific customer segments. This process helps in identifying outliers, detecting patterns, and making data-driven decisions.

Common techniques for grouping data include using functions like GROUP BY in SQL or utilizing data visualization tools to create charts or graphs that illustrate the grouped data. Grouping can be applied in various fields, such as marketing, finance, healthcare, and research, to uncover insights and support decision-making processes.

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The time interval at which the ball strike the ground is 7.44 second.

Time is the apparent progression of events from past to future

To calculate the time interval at which the ball strike the ground, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

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