1. Compare pressure that fluid applies to the bottom of a glass with the pressure it applies to the sides of the glass

The answer is that useful mechanical work is being done in both scenario 1 (Dave climbing a ladder) and scenario 3 (Dave washing his car).

Useful mechanical work is being done in both scenario 1 (Dave climbing a ladder) and scenario 3 (Dave washing his car). Let's examine each scenario:

Dave is climbing a ladder: In this scenario, Dave is exerting a force against gravity to move his body upwards. This involves the application of force over a distance, which is the definition of mechanical work. Therefore, useful mechanical work is being done as Dave climbs the ladder.

Dave's stomach begins to digest his lunch: Digestion is a biological process that occurs within the body and is not considered mechanical work. It involves chemical and enzymatic reactions in the stomach to break down food, but it does not involve the application of force over a distance. Thus, no useful mechanical work is being done in this scenario.

Dave washes his car: When Dave washes his car, he applies force to the cleaning materials and moves them across the car's surface, exerting work against friction. This work results in the cleaning of the car and is considered useful mechanical work.

Therefore, the answer is that useful mechanical work is being done in both scenario 1 (Dave climbing a ladder) and scenario 3 (Dave washing his car).

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Answer:

Tuberculosis

Explanation:

Tuberculosis is a disease of lower respiratory system because it's affect the lungs and the voice box . It is a bacteria disease that affect the lungs and it is very contagious. It can spread rapidly to the brain and spine. Most times people with tuberculosis did not show symptoms but when there is symptoms,the symptoms include cough with blood, night sweats, fever e t.c.

Answer:A

Explanation:

a. The parameter t is eliminated by solving for t in terms of y and substituting it into the equation for x, resulting in \(\rm \(x = 8y^2\)\).

b. The equation \(\rm \(x = 8y^2\)\) represents a right-opening parabola.

The positive orientation follows the increase in t, leading to an orientation from the y-axis towards the right side of the graph as t ranges from 0 to

5.

a. To eliminate the parameter t and obtain an equation in x and y, we can solve for t in terms of y from the equation \(\rm \(y = e^t\)\) and then substitute it into the equation for x:

\(\rm \[ y = e^t \Rightarrow t = \ln(y) \]\)

Now, substitute \(\rm \(t = \ln(y)\)\) into the equation for x:

\(\rm \[ x = 8e^{2t} = 8e^{2\ln(y)} = 8y^2 \]\)

So, the equation in terms of x and y is \(\rm \(x = 8y^2\)\).

b. The parametric equations \(\rm \(x = 8e^{2t}\)\) and \(\rm \(y = e^t\)\) represent a curve in the Cartesian plane. The equation \(\rm \(x = 8y^2\)\) describes a parabola that opens to the right and is symmetric about the y-axis.

The positive orientation of the curve follows the direction of increasing t, which corresponds to moving from left to right along the curve.

In this case, as t ranges from 0 to 5, x increases as y increases, resulting in a parabolic curve oriented from the y-axis towards the right side of the graph.

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Answer: The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. In this case, light bulbs A and B are connected by parallel connections and light bulbs C and D are connected by series connections. This is an example of a combination circuit.

Explanation:

Assume an individual has no sodium in their intestinal tract. if this were the case the asorption of   galactose   would be most affected.

Adult insects' gastrointestinal tract epithelium is where nutrients are absorbed because of the exoskeleton. The majority of physiological investigations have described the intestinal absorption of sugar as a diffusional mechanism, and no sugar transporter has been successfully cloned from an insect's digestive system to date. The current investigation makes a convincing case for the existence of a saturable galactose transport system in the gastric caeca of Locusta migratoria.

Galactose absorption is unaffected by changes in pH, the absence of K+, Cl, Mg2+, or Ca2+, either. However, facilitative transporter inhibitors like as phloretin, cytochalasin B, and theophylline reduce sugar uptake by about 50%. The presence of an mRNA coding for at least one equilibrative sugar transporter in the L. migratoria gastric caeca is further supported by the observation that Xenopus laevis oocytes microinjected with poly A+ RNA isolated from gastric caeca show sodium-independent galactose uptake that is three times higher than in non-injected oocytes.

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Answer:

G.P.E  = 414050 Joules or 414.05 Kilojoules

Explanation:

Given the following data;

Mass = 65 kg

Height = 650 m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

\( G.P.E = mgh\)

Where;

Substituting into the equation, we have;

\( G.P.E = 65 * 9.8 * 650 \)

\( G.P.E = 414050 \)

G.P.E  = 414050 Joules or 414.05 Kilojoules.

C because the air will push him closer to the space station

Answer:

D. Shoot gas from his compressed air canister away from the space station

Explanation:

Isacc Newton's 3rd law states "For every action, there is an equal and opposite reaction." The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Answer:

Mass is how much matter an object contains. Mass and weight are different measurements, although they may seem similar. Mass is measured by comparing one object to another object of known mass. Grams and kilograms are units we use to measure mass.

The measurement of quantity of matter in an object is mass ( optionC)

Mass of a body is defined as the quantity of matter(Solid, liquid or gas) contained in the given volume of the body.

Mass is a scalar quantity and also part of the fundamental quantities. It is measured in kilograms. Other units of mass include; gram tonnes e.t.c

Matter is anything that takes up space and can be weighed.

Therefore the quantity of matter in a body is

called mass.

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Answer:

8 m/s²

Explanation:

a = \(\frac{v-v0}{t}\)

a = (26 - 10)/2 = 8 m/s²

Hint: By drawing a rough figure we can find the direction of displacement of the person, magnitude can be found by using the Pythagoras theorem.

Explanation:

Let AB be the displacement of the person towards the North, BC be the displacement towards the south and CE be the displacement in the South-West direction. We have to find the displacement of the person from the origin, EA

Consider the right triangle ECD, by Pythagoras' theorem

ED²  +CD²  =EC² → (i)

From fig, CD = AB = 30m

EC = 30√2m

ED = EA + AD

AD = BC = 20m

∴ ED = EA + 20m

(i) → (EA + 20)² + (30)² = (30√2)²

(EA + 20)² + 900 + 1800

EA + 20 = 30

EA=10m

The displacement of the person from the origin will be 10m along West.

The factor by which the radii of the arterioles can constrict is given by r2/r1.

The ratio r2/r1 represents the factor by which the initial radius (r1) of the arterioles can constrict to the constricted radius (r2). When the arterioles constrict, their diameters decrease, resulting in a reduction in blood flow through these blood vessels.

The constriction of arterioles is a regulatory mechanism used by the body to control blood flow and maintain proper blood pressure in different tissues and organs. The factor r2/r1 quantifies the extent of the constriction.

For example, if r2/r1 is 0.5, it means that the constricted radius is half the size of the initial radius. Therefore, a higher value of r2/r1 indicates a greater degree of constriction and a more significant reduction in blood flow.

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Answer: The pressure decreases as the temperature decreases.

Explanation: As the temperature decreases, the particles of gas start moving more slowly. The particles' velocity decreases and as it collides with the wall of the container, it exerts a less force on the walls of the container. This follows on from the equation Ft = mv - mu. Less force therefore means less pressure as force and pressure are proportional according to equation Pressure = Force / Area.

Answer:

Camera flash units charge a capacitor and then discharge it through a light bulb. When the unit flashes, the energy stored in the capacitor is released in the form of radiant energy (a flash of light). Flash units waste some of the energy in the form of heat, so is an upper limit for estimating the radiant energy.

Explanation:

When substances change state, the molecules remain the same and there is no change in mass. This is because the molecules themselves do not break apart or form new chemical bonds.

Molecules are particles made up of two or more atoms that are bound together. They are the smallest units of matter that can still retain the properties of the substance they are part of. For example, water is made up of two hydrogen atoms and one oxygen atom, which form a molecule. Molecules vary in size and complexity; some molecules, such as proteins, are made up of hundreds of atoms. Molecules are held together by chemical bonds, which are forces of attraction between the atoms. These bonds can be of several different types, such as covalent, ionic, and hydrogen bonds. Molecules can interact with each other and with other substances, such as solids, liquids, and gases, to create new substances with different properties. Understanding the behavior of molecules is essential to the study of chemistry, biology, and other sciences.

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Answer:

protons

Explanation:

the protons identifies an atoms as that of a particular element the atomic number is equal to the number of protons in the nucleus of an atom

Answer:

gravitational attraction

Analytical maps can be created to depict historical ownership, paved areas for cars, parks, natural amenities, and community street design. Streets, being public spaces, require measurement to determine their intended beneficiaries.

Analytical maps offer a valuable tool for visualizing and understanding various aspects of urban planning. By creating maps that showcase historical ownership patterns, paved areas designated for cars, locations of parks and natural amenities, and community street design, it becomes easier to assess the distribution of resources and infrastructure within a city.

In this context, streets hold a significant role as public spaces. They are not solely meant for vehicular traffic but should also prioritize the needs and activities of pedestrians, cyclists, and the wider community. Analyzing street design through mapping can help evaluate whether streets are primarily designed to cater to cars or if they accommodate a balanced and inclusive approach that considers the needs of all users.

To achieve equitable urban environments, it is crucial to assess the intended beneficiaries of street design and identify any discrepancies or biases in the allocation of public space. By utilizing analytical maps, planners, policymakers, and communities can have a clearer understanding of the current state of street design and work towards creating more people-centric and sustainable cities.

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Answer:

the answer is A

Explanation:

Answer:

The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights. Human-made plasma is found in fluorescent lights, plasma TV screens, and plasma spheres

Explanation:

hope this helps if so mark me brainliest <3

Answer:

the level on the top

Explanation:

_+$+$

The symbols that completes the given nuclear equation are written as follows:

An alpha decay can be defined as a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle, thereby, producing chemical elements with a different atomic nucleus.

During an alpha decay, the radioactive element has a mass number that is decreased by four (4) and an atomic number that is decreased by two (2), which is typically an atom of Helium (⁴He₂).

A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a -1 charge. This ultimately implies that, an atom of neutron becomes a proton and an electron (₀e⁻¹) and an atom of proton also becomes a neutron and a positron (⁰⁻e₁⁺) during beta decay.

In conclusion, the symbols that completes the given nuclear equation are written as follows:

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Answer:

I believe it is 2 kg (Red Bird)

Explanation:

force = mass x acceleration;

mass = force / acceleration

Answer:

Field, In physics, a region in which each point is affected by a force.

Explanation:

The average power developed by the boy during the climb is approximately 29.4 W.

In physics, the amount of energy transferred or converted per unit time is called power.

total height = number of steps x height of each step

total height = 30 x 0.15 m = 4.5 m

Given, time = 60 s

As power = work done / time

work done = force x distance

force = mass x gravity

mass is boy's mass (40 kg) and gravity is acceleration due to gravity (9.81 m/s²).

force = 40 kg x 9.81 m/s² = 392.4 N

The distance that the boy moves is equal to the total height that he has climbed: distance = total height = 4.5 m

work done = force x distance

work done = 392.4 N x 4.5 m = 1765.8 J

power = work done / time

power = 1765.8 J / 60 s

power ≈ 29.4 W

Therefore, the average power developed by the boy during the climb is approximately 29.4 W.

As for the anomalous behavior of water, water has a higher boiling point and melting point as compared to other substances with similar molecular weight. This is due to the strong hydrogen bonding between water molecules, which requires more energy to break the bonds and change the state of water from solid to liquid to gas.

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According to the question of force, the y-component of F3 is -2.719 N.

What is force?

Force is a fundamental concept in physics that describes the interaction between two objects or systems. It is a vector quantity, meaning it has both magnitude and direction, and can be described mathematically. Force is a push or pull that can cause an object to accelerate, change its direction, or change its shape. Force is a function of mass and acceleration, as described by Newton's second law of motion.

The y-component of F3 can be calculated using the equation F3y = F1y + F2y. Since F1 is at a 180° angle, its y-component is 0. The y-component of F2 can be calculated using the equation F2y = F2 × sin(θ), where θ is the angle of F2. In this case, θ is 2430°, so the y-component of F2 is 8.90 × sin(2430°) = 8.90 × -0.3105 = -2.719 N. Therefore, the y-component of F3 is -2.719 N.

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Every point on a wave acts as a generator of new waves in accordance with Huygens' principle.

Option b is correct.

According to Huygens' principle, any point on a wave front can be thought of as a source of secondary waves. The superposition of two waves is referred to as interference, whereas interference caused by several waves is referred to as diffraction.

All waves, including those in water, sound, and light, can be explained by Huygens's principle. It helps explain the rules of reflection and refraction in addition to how light waves travel through space.

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As additional resistors are included lined up across a consistent voltage source, there are more ways for current to take.

So more current spills out of the source, and the all out current provided by the source increments.

The power supplied by the battery is (voltage) x (current).  So if the voltage is constant and the current increases, the power being supplied must also increase.

A resistor is an electrical part that cutoff points or manages the progression of electrical flow in an electronic circuit. Resistors can likewise be utilized to give a particular voltage to a functioning gadget like a semiconductor.

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