TRUE/FALSE. We attend class in a Mediterranean climatic region having a warm dry summer.

Answer:

spoon and scissors belong to first class lever.

hope it is helpful to you

Answer:

The centripetal acceleration will be "21.785 m/s²".

Explanation:

The given values are:

Time,

t = 0.85 seconds

Length of rope,

r = 0.40 m

Mass of ball,

m = 0.80 kg

As we know,

⇒ \(w=\frac{2 \pi}{t}\)

On substituting the values, we get

⇒      \(=\frac{2\times 3.14}{0.85}\)

⇒      \(= \frac{6.28}{0.85}\)

⇒      \(=7.38 \ rad/s^2\)

The centripetal acceleration will be:

⇒  \(a=r\times w^2\)

⇒     \(=0.40\times (7.38)^2\)

⇒     \(=0.40\times 54.46\)

⇒     \(=21.785 \ m/s^2\)

Answer:

not if its moving upwards but eventually it will be on its way down

Explanation:

Power quotient of : _____?

Answer :

\(p = \frac{w}{t} \)

P is Power (Watt)

W is Work (Joule)

T is Time (second)

So, it means Work and Time is the quotient of Power. (B)

The result of subtracting Vector K from Vector L is 4 at 2° and 4 at 0°.

Vector is a mathematical entity that has both magnitude and direction. It can be used to represent physical quantities such as force, velocity, and acceleration. Vectors can be represented graphically as arrows, with the length of the arrow proportional to the magnitude and the direction of the arrow indicating the direction of the vector. Vector-based operations, such as addition and subtraction, are commonly used in physics, engineering, and other sciences.

Vector K and Vector L are two vectors in a two-dimensional plane. To subtract one vector from the other, we must subtract the components of each vector from each other. Vector K has the components of 4 at 0° and 6 at 4°. Vector L has the components of 8 at 2° and 10 at 0°.

To subtract Vector K from Vector L, we must subtract the components of Vector K from the components of Vector L. Thus, we subtract 4 from 8 at 2° to get 4 at 2°, and we subtract 6 from 10 at 0° to get 4 at 0°. Therefore, the result of subtracting Vector K from Vector L is 4 at 2° and 4 at 0°.

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Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance.

Explanation:

Make us of equation of motion formulas.

a.) the total time of flight = 8.16 s

b.) the maximum height reached = 81.6 m

c.) the velocity at t = 5s = 9 m/s

Motion of any object under gravity is the vertical motion of the object under the influence of acceleration due to gravity.

Given that a ball is projected with 40 m/s vertically upward.

A. the total time of flight of the ball will be T = 2t

At maximum height, v = 0.

v = u - gt

0 = 40 - 9.8t

9.8t = 40

t = 40 / 9.8

t = 4.08 s

T = 2 × 4.08

T = 8.16 s

B. the maximum height H can be found by using the formula

v² = u² - 2gH

At maximum height, v = 0

0 = u² - 2 × 9.8 × H

40² = 19.6H

H = 1600/19.6

H = 81.6 m

C. the velocity at t = 5s will be v

v = u - gt

v = 40 - 9.8 × 5

v = 40 - 49

v = - 9 m/s

That is, 9 m/s in the opposite direction ( coming downward )

Therefore, the total time of flight of the ball is 8.16 s, the maximum height reached is 81.6 m and the velocity at t = 5s is 9 m/s

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According to the given question, "true" means that a conductor's ampacity is directly related to the type of insulation used on the conductor.

True. A conductor's ampacity, or the amount of electrical current it can safely carry, is directly related to the type of insulation used on the conductor. The insulation helps to protect the conductor from damage and overheating, which can reduce its ampacity. Therefore, choosing the right type of insulation for a conductor is crucial to ensuring that it can safely carry the required amount of electrical current without becoming damaged or causing a potential safety hazard.

Additionally, other factors such as the conductor's size, temperature, and installation conditions can also impact its ampacity. It's important to consider all of these factors when selecting and installing conductors in any electrical system.

In summary, the type of insulation used on a conductor directly impacts its ampacity by influencing its temperature limits and heat dissipation capabilities.

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The block's third dimension is 2.77 cm.

The mass of the osmium block is 1 kg.

The dimensions of the rectangular osmium block are 4 cm × 4 cm.

Density is defined as the mass of the object by the volume of the object.

density = mass / volume

Now, the volume of a rectangle is:

Volume = length × breadth × height

And now let's assume that the block's height is y.

Then,

Volume = length × breadth × height

Volume = 4 cm × 4 cm × y cm

Osmium now has a density of ρ = 22.57 g/cm³.

Therefore, the density of the rectangular osmium will be:

density = mass / volume

\(\rho = \frac{1{~}kg}{4{~}cm {~}\times {~}4{~}cm {~}\times {~} y}\)

\(22.57 {~}g/cm^{3}=\frac{1000{~}g}{4{~}cm \times 4{~}cm \times y}\)

\(16{{~}cm^{2} \times y{~} =\frac{1000{~}g}{22.57{~} g/cm^{3}}\)

16y cm² = 44.31 cm³

Dividing each side of the equation by 16 cm²,

( 16y cm² ÷ 16 cm²) = ( 44.31 cm³ ÷ 16 cm² )

y = 2.77 cm

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The complete question is mentioned below:

The density of osmium is 22.57 g/cm³. If a 1.00kg rectangular block of osmium has two dimensions of 4.00 cm x 4.00 cm, calculate the third dimension of the block.

When heating a sample of liquid water, the point at which boiling begins is best described as the temperature at which the vapor pressure of the liquid equals the atmospheric pressure.

The point at which boiling begins is when the vapor pressure of the liquid equals the atmospheric pressure. At this point, the liquid can no longer hold any more vapor and bubbles of vapor form and rise to the surface. The temperature at which this occurs is called the boiling point.

For water at sea level, the boiling point is 100°C (212°F). However, the boiling point of water can vary depending on the atmospheric pressure. At higher altitudes, the atmospheric pressure is lower, so the boiling point of water is lower. For example, at the top of Mount Everest, the boiling point of water is about 70°C (160°F).

The boiling point of a liquid can also be affected by the presence of impurities. For example, salt water has a higher boiling point than pure water. This is because the salt molecules interfere with the formation of water vapor.

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Answer:

Attometer

Explanation:

an attometer is the smallest unit of measurement.

Hope it helped!

Answer:

True

Explanation:

We have that the statement is

True

Kinesiology

Kinesiology  is the study of human movement,and functions by inducing other sciences of like exercise psychology , exercise sociology and other science that studies human movement and performance

Therefore

The Statement is True

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Answer:

that answer is

b. 1/4,000

Therefore, the correct answer is c. 20 N/kg

To solve this problem, we need to consider the relationship between weight, mass, and gravitational field strength.

Weight is the force experienced by an object due to gravity, and it is given by the formula:

Weight = mass * gravitational field strength

Let's assume the gravitational field strength on Earth is g, and the weight of the astronaut on Earth is W.

According to the problem, the weight of the astronaut at the given location is 25 percent of what he would weigh on Earth. Mathematically, this can be expressed as:

Weight at location = 0.25 * Weight on Earth

Using the formula for weight, we can rewrite this as:

mass * gravitational field strength at location = 0.25 * (mass * gravitational field strength on Earth)

The mass of the astronaut cancels out from both sides of the equation, and we are left with:

gravitational field strength at location = 0.25 * gravitational field strength on Earth

Now, we know that the weight of an 80 kg astronaut on Earth is equal to the force of gravity acting on him, which is given by:

Weight on Earth = mass * gravitational field strength on Earth

W = 80 kg * g

We can substitute this value into the equation for the gravitational field strength at the location:

gravitational field strength at location = 0.25 * (80 kg * g)

gravitational field strength at location = 20 kg * g

So, the magnitude of the gravitational field at the location where the astronaut weighs 25 percent of what he would weigh on Earth is 20 N/kg.

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Answer:

High

Explanation:

Waves with high energy have a higher frequency.

Answer:

because it get the energy from the heat and the cold mixed together

Explanation:

Answer:

can you please translate to english?

Explanation:

It will take the 6 cm bar 10.6 minutes to cool down to room temperature.

If it takes a 2 cm long insulated bar 7 minutes to cool down to room temperature, it will take a 6 cm bar made of the same material more than 7 minutes to cool down to room temperature.

                            First, we have to understand that the rate of cooling is inversely proportional to the length of the bar. This is because the it will take the 6 cm bar 10.6 minutes to cool down to room temperature. Surface area of the bar is directly proportional to its length.

Therefore, a longer bar will have more surface area and will lose heat faster than a shorter bar.

rate of cooling α 1/length of the bar Let's say the time it takes for the 6 cm bar to cool down to room temperature is T. 7/2 = T/6

T = 21/2

Therefore, it will take the 6 cm bar 10.6 minutes to cool down to room temperature.

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Answer:

Yes.

Explanation:

There is potential energy in your leg that once comes in contact with the ball turns into kinetic energy.

Answer:0.060

Explanation:

The mass of the tennis ball is equal to 0.23 Kg.

According to the law of conservation of linear momentum, the sum of the momentum of the bodies which are collided with each other must be equal before and after the collision.

m₁ .u₁ + m₂.u₂ = m₁ .v₁ + m₂.v₂

where m₁ and m₂ is the masses, u₁ and u₂ are initial speed while v₁ & v₂ is their final speed of the collieded objects.

Linear momentum can be defined as the product of the mass times the velocity of that object.

Given, the initial velocity of the baseball is u₁ = 15 m/s

The initial velocity of the tennis ball u₂ = 22 m/s.

The mass of baseball, m₁ =0.15 Kg

From the law of conservation of momentum, find the  mass of the tennis ball:

m₁ u₁ + m₂ u₂ = m₁.v₁ + m₂.v₂

0.15 × 15 + m ×22 = 0.15 × 1.2 + m × 13

2.25 + 22 m = 0.18 + 13 m

9 m = 2.25

m = 0.23 Kg

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The momentum of the 5kg object before the collision is; 50kgm/s.

The momentum of a body is mathematically evaluated as the product of its mass and velocity of motion.

According to the question;

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Answer: Table B is best suited for recording the data, as it lists the temperature readings at regular intervals of two minutes. This will allow for a clear and organized record of the temperature change over time, making it easier to analyze and draw conclusions from the data.

Explanation:

(a) The centripetal force required for the child to stay on the playground merry-go-round is 400 N.

(b) The centripetal force required for the child to stay on the amusement park merry-go-round is 0.38 N.

(c) The centripetal force required for the playground merry-go-round is greater than the child's weight, while the centripetal force required for the amusement park merry-go-round is much smaller than the child's weight.

(a) To determine the centripetal force required to keep the child on the playground merry-go-round, we can use the formula

Fc = mv^2 / r

Where Fc is the centripetal force, m is the mass of the child, v is the velocity of the merry-go-round, and r is the radius of the merry-go-round.

First, we need to convert the rotational speed from revolutions per minute to radians per second

35.0 rev/min = 35.0 x 2π/60 rad/s = 3.67 rad/s

Substituting the given values into the formula, we get

Fc = (23.0 kg) x (3.67 m/s)^2 / 3.00 m

Fc = 400 N

Therefore, the child must exert a centripetal force of 400 N to stay on the playground merry-go-round.

(b) For the amusement park merry-go-round, we can use the same formula

Fc = mv^2 / r

However, this time we need to use the rotational speed of 3.00 rev/min, which is equivalent to

3.00 rev/min = 3.00 x 2π/60 rad/s = 0.314 rad/s

Substituting the given values into the formula, we get

Fc = (23.0 kg) x (0.314 m/s)^2 / 7.00 m

Fc = 0.38 N

Therefore, the child needs to exert a centripetal force of 0.38 N to stay on the amusement park merry-go-round.

(c) To compare each force with the child's weight, we need to find her weight first

w = mg

Where w is the weight, m is the mass, and g is the acceleration due to gravity (9.81 m/s^2).

Substituting the given mass, we get

w = (23.0 kg) x (9.81 m/s^2)

w = 226 N

For the playground merry-go-round, the centripetal force of 400 N is greater than the child's weight of 226 N, which means the force is sufficient to keep her on the merry-go-round.

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The amount of lateral strain in a tension member can be calculated using Poisson's ratio.

To calculate the lateral strain, we can use the equation: ε_lateral = -ν * ε_longitudinal

Where:

ε_lateral = Lateral strain

ν = Poisson's ratio

ε_longitudinal = Longitudinal strain

Poisson's ratio (ν) is a material property that describes the ratio of lateral strain to longitudinal strain when a material is subjected to an axial load. It is defined as the negative ratio of the transverse strain to the longitudinal strain.

Calculating the lateral strain involves determining the longitudinal strain, which can be calculated using the equation:ε_longitudinal = ΔL / L

Where:

ε_longitudinal = Longitudinal strain

ΔL = Change in length of the tension member

L = Original length of the tension member

Once the longitudinal strain is calculated, we can use Poisson's ratio to determine the lateral strain by multiplying the longitudinal strain by the negative value of Poisson's ratio.

It is important to note that the lateral strain is typically very small compared to the longitudinal strain in a tension member, especially for materials with a low Poisson's ratio.

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Racial Formations essay reading, race is defined as a socio historical concept.

According to the authors of the "Racial Formations" essay, race is a socio-historical concept that is constantly being constructed and reconstructed by society. This means that race is not a fixed biological category but a product of social, cultural, and historical processes that shape our understanding and interpretation of human differences. The authors argue that the concept of race is not based on any objective biological criteria, but rather on socially constructed ideas about physical and cultural differences that are used to justify power relations and social inequalities.

I agree with this definition of race as a socio-historical concept because it acknowledges that race is not a natural or biological phenomenon, but rather a product of human history and social relations. It recognizes that race is not something that is fixed or immutable, but rather something that is constantly being constructed and reconstructed by society through processes of racialization and racial formation. This perspective challenges the traditional biological concept of race, which assumes that human differences are based on fixed and immutable categories such as skin color, facial features, or genetic makeup.

In reality, race is socially constructed and can change over time and across different societies. For example, what is considered "black" or "white" in one society may be different in another, and what is considered "racial" in one context may not be in another. The social construction of race is also reflected in the way that racial categories are used to justify power relations and social inequalities, such as in the case of racial discrimination or racial profiling. In summary, race is a socio-historical concept that is shaped by society and culture, and it is important to recognize this in order to challenge racial discrimination and promote social justice.

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When a pendulum is dropped from rest at 3m above the ground, its maximum height on the other side will also be 3m.

As per the law of conservation of energy, the total energy of a closed system remains constant. In this case, the system includes the pendulum and the earth.

When the pendulum is dropped from rest at 3m above the ground, it gains potential energy which is converted to kinetic energy as it swings.

However, at the highest point of its swing, all its kinetic energy is converted back into potential energy. This means that the pendulum will reach the same height on the other side as it was dropped from.

Therefore, the maximum height of the pendulum on the other side will also be 3m. This is assuming that there is no air resistance or other external forces acting on the pendulum, which may alter its trajectory or energy.

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Explanation:

I added a photo with my drawing

Answer:

car travel

precipitation

O temperature

Explanation:

Jet streams which is the ability of the object to move at a high speed due to its power is common among some given set of objects. Some are powered by the objects fuel while others are entirely different.

The above given options are actually affected by the jet streams.

Answer:

B. precipitation

C. temperature

Explanation:

this is late but for anyone that's looking for this, hope this will help! :D

“The electric flux through a closed surface is equal to the net charge inside the surface divided by the physical constant. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

Gauss’s Law for electric fields is a fundamental principle in physics, specifically in the study of electrostatics. The law describes the relationship between the electric flux and the distribution of electric charges in a given space. Simply put, it states that the electric flux through a closed surface is proportional to the total amount of electric charges inside the surface. In mathematical terms, the statement of Gauss’s Law for electric fields is as follows: E.ds = Q/ε0Here, E.ds represents the electric flux through a closed surface, Q represents the total electric charge enclosed within the surface, and ε0 is the physical constant known as the permittivity of free space. This equation can be used to calculate the electric field created by a given charge distribution, provided that the electric flux through a closed surface around the distribution is known.

Gauss’s Law for electric fields states that the electric flux through a closed surface is proportional to the net electric charge enclosed within the surface. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

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