Make a conclusion on the relationship of mass to the rate of the change of motion of the balloon at a constant force.​

(a) Calculate the displacement r :

r = (8.5 i + 13 j + 8.2 k) m - (1.5 i + 1.75 j + 1.2 k) m

r = (7 i + 11.25 j + 7 k) m

The work W done by F in the direction of this displacement is

W = F • r = (2 i + 4 j + 6 k) N • (7 i + 11.25 j + 7 k) m

W = (2×7 + 4×11.25 + 6×7) Nm = 101 J

(b) The average power P of the machine is then

P = W / ∆t = (101 J) / (12 s)

P = 101/12 J/s ≈ 8.42 W

Answer:

In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them.

Explanation:

Answer: Mendeleev first published a table of elements arranged according to increasing atomic masses. He noticed that some elements near each other had differing properties, but elements in vertical columns had similar properties. Moseley then rearranged the table according to atomic numbers and this eliminated the discrepancies found in Mendeleev’s attempt. Today’s version of the periodic table displays elements in order based on their atomic number; the atomic number indicates the number of protons within the atoms of a particular element. Rows are called periods and columns are called groups. Elements in the same group have similar properties. Elements are grouped into nine categories: noble gases, halogens, nonmetals, alkali metals, alkaline earth metals, transition metals, other metals, metalloids, and rare earth elements.

Answer:

Just 3

Explanation:

I believe the other two are incorrect

Answer:

D. 60

Explanation:

Divide 300 miles by 5

Answer:

Energy = 12000 [kw*h]

Explanation:

In order to solve this problem, we must multiply the power used by the amount of time in use.

\(Energy = Power*time\\Energy = 1500*8\\Energy = 12000 [kW*h]\)

Answer:

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces.

The maximum overhang possible for the two bricks (without tripping) is 15m.

Given,

          Length of the brick (L) = 24m

          Maximum overhang = 12m

          Length of second brick = 24m

          Maximum overhang for two bricks =?

Now,

Generally, the equation for the value x (mid-point joining the bricks)             is given as,

x = 0.25 × L

  =0.25 × 12

  = 3m

Hence,

The maximum overhang possible for the two bricks (without tripping) will be,

L₀ = L/2 + x

    = 24/2 + 3

    = 12 + 3

    = 15m

Therefore, The maximum overhang possible for the two bricks (without tripping) is 15m.

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a. The free-body diagrams of the 8.0 kg box and the 2.0 kg mass is attached below.

bi) the acceleration of the system is 0.4 m/s^2

bii)  the tension in the string is 0.8 N.

Net force = ma

Net force = T - F_friction

where T is the tension force and F_friction is the frictional force.

Substituting the given values, we have:

T - F_friction = ma

T - 6.0 N = (8.0 kg + 2.0 kg) a (since the tension force acts on both masses)

T - 6.0 N = 10.0 kg a

(ii) To find the tension in the string, we can apply Newton's second law of motion to the 2.0 kg mass:

Net force = ma

where m is the mass of the mass and a is the acceleration of the system. The net force on the mass is the tension force:

Net force = T

Substituting the given values, we get:

T = ma

T = 2.0 kg x a

To solve for T, we need to find the acceleration of the system.

To find both a and T, we can use the equations we derived above and solve them simultaneously:

T - 6.0 N = 10.0 kg a (equation 1)

T = 2.0 kg x a (equation 2)

Substituting equation 2 into equation 1, we get:

2.0 kg x a - 6.0 N = 10.0 kg a

Solving for a, we get:

a = 0.4 m/s^2

Substituting a into equation 2, we get:

T = 2.0 kg x 0.4 m/s^2 = 0.8 N

Therefore, the acceleration of the system is 0.4 m/s^2 and the tension in the string is 0.8 N. of the system is 0.4 m/s^2 and the tension in the string is 0.8 N.

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The lowest possible frequency of sound for which this is possible is 85.0 Hz.

To work out the least conceivable recurrence of sound for which Abby hears a greatest in the power of the sound, we first need to find the frequency of the sound waves, which is 4.00 m. Utilizing the distance among Abby and the speaker, we can find the point between the line associating Abby to the speaker and the line interfacing the two speakers, which is 68.2 degrees. Utilizing geometry, we find the stage contrast between the waves from the two speakers that arrives at Abby is 2π. Consequently, the most minimal conceivable recurrence of sound is v/λ = 85.0 Hz.

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The complete question is:

Two identical loudspeakers 2.00 m apart are emitting sound waves into a room where the speed of sound is 340 m/s. Abby is standing 5.50 m in front of one of the speakers perpendicular to the line joining the speakers, and hears a maximum in the intensity of the sound. calculate the lowest possible frequency of sound for which this is possible? Express your answer with the appropriate units.

Answer:

Inner planets rotate slowly and so they take more time to complete a rotation. Whereas, outer planets rotate faster and so they take less time to complete a rotation.

Explanation:

The inner planets are the ones that are much closer to the sun and as such they have much smaller orbits around them and take much less time to circle around it. These planets are much smaller, which enables them rotate slowly, so they take more time to complete a rotation..

Whereas, the outer planets differ from the inner planets in that they are much further from the sun and so take much more time for them to be able to make a single circle around the su and also, because they are much bigger, it takes them much more time to spin around their own axis, thus Outer planets rotate faster, so they take less time to complete a rotation

Answer:

there is no net force acting on the object

Explanation:

If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).

thank ya :>

Answer:

Jared has earned 23% of the $52 he needs to buy a new jacket. Find 23% of $52.

Which expression can you use to find 23% of 52?

✔ 0.23 × 52

23% of $52 is $

✔ 11.96

.

An easy way to check your answer is to use the friendly

✔ 25%

and divide 52 by

✔ 4

to get

✔ 13

.

Explanation:

Answer:

The right sphere will acquire an equal and opposite net positive charge to balance the negative charge on the left sphere.

Since the left sphere is attracted to the positively charged rod, it means that the left sphere acquires a temporary negative charge due to induction.

The positive charge on the rod repels electrons in the left sphere, causing them to move away from the rod side and accumulate on the opposite side, resulting in a net negative charge on the left sphere.

According to the principle of charge conservation, the net charge on the system must remain zero. Therefore, the right sphere acquires an equal and opposite net positive charge to balance the negative charge on the left sphere.

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Assuming both forces act horizontally, the net force is in Kathryn's direction with a magnitude of 5 N.

If "towards Kathryn" is taken the be the positive direction, then the net force is

∑ F = 20 N - 15 N = 5 N

Answer:

everyone on the nighttime side of Earth is seeing it.

Explanation:

A lunar eclipse is a phenomenon that occurs when the Earth comes between the Moon and the Sun thereby causing it to cover the Moon with its shadow.

Simply stated, lunar eclipse takes place when the Moon passes or moves through the Earth's shadow thereby blocking any ray of sunlight from reaching the Moon. Thus, the full moon appears deep red (blood moon).

Also, a lunar eclipse would occur only when the Sun, Earth, and Moon are closely aligned to form a straight line known as the syzygy.

There are three (3) types of lunar eclipse and these are;

1. Total lunar eclipse.

2. Partial lunar eclipse.

3. Penumbra lunar eclipse.

Generally, if an observer on Earth sees a total lunar eclipse, everyone on the nighttime side of Earth is seeing it because it's quite easy to see a total lunar eclipse while the full moon passes through the innermost part of the shadow of the earth.

Answer & Explanation:

The energy of a wave depends upon its amplitude, frequency and wave speed.

Assuming that both these waves are light waves, they have the same speed and amplitude can be assumed to be constant.

Wave 2 has a smaller wavelength and hence a higher frequency as c = λf, where

c is the speed of light,

λ is the wavelength and

f is the frequency of the wave.

Since wave 2 has a higher frequency, it has more energy.

The magnitudes of the two forces are 6 N and 8 N when acting at right angles and their resultant is 10 N.

The problem involves finding two forces, given the magnitudes of their resultants when acting at different angles. Let F1 and F2 be the magnitudes of the two forces. When the two forces are at right angles, the resultant force R is given by:

R = √(F1² + F2²) = 10 N

Squaring both sides, we get:

F1² + F2² = 100

When the two forces act at an angle of 60 degrees, their resultant R is given by:

R = √(F1² + F2² + 2F1F2cos60) = 13 N

Squaring both sides and using cos60 = 0.5, we get:

F1² + F2² + F1F2 = 169

Now, we have two equations with two unknowns. Solving for F1 and F2, we get:

F1 = 6 N

F2 = 8 N

As a result, the magnitudes of the two forces are 6 N and 8 N when operating at right angles, respectively, and the resultant is 10 N. When the two forces act at an angle of 60 degrees, their magnitudes are still 6 N and 8 N, but their resultant is 13 N

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Answer:

same and unique

Explanation:

scientist use same laws eg newton law everywhere in the world.

pressure amplitude = 3.43 mPa and displacement amplitudes = \(2.16*10^-^1^0\) m

Intensity and pressure amplitude is  = I =Δp^2/2pv

I is the intensity of the sound wave

Δ is the pressure amplitude

v - velocity of a sound wave and p - density of air

where as; p= 1.225kg/m^3

I = 1.4×10^-8W/m^2

V = 343 m/s

Δp= \(\sqrt{2pvI\)

ie., \(\sqrt{2*1.225*343*1.4*10^-^8\) = 3.43 mPa

Intensity and displacement amplitude = \(I=2π^2pf^2vΔs^2\)

where; f= frequency of sound

Δs = displacement of amplitude; I is the intensity of the sound wave

v - velocity of a sound wave and p - density of air

Δs=\(\sqrt{I/2\pi ^2pf^2v\) = \(2.16*10^-^1^0\)m

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True, Food manufacturers create fats by adding hydrogen to fats.

Hydrogenation is used in the oil industry in making trans fats or margarine by increasing the melting point through reducing the carbon-to-carbon double bonds..

During hydrogenation, unsaturated fats undergo a chemical reaction in the presence of hydrogen gas and a catalyst, typically nickel.

The process involves the addition of hydrogen atoms to the carbon double bonds in the fatty acid molecules, resulting in the conversion of some of the double bonds into single bonds.

This reduces the number of unsaturated bonds in the fat, making it more saturated.

So we can conclude that the statement is true.

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The following statement is not a scientific hypothesis:

C. Halle Berry is attractive.

A scientific hypothesis is a proposed explanation for an observation or pattern in nature that can be tested through further investigation and experimentation. It should be testable, falsifiable, and based on evidence.

Neon atoms emit red light. This is a scientific hypothesis that can be tested and confirmed by looking at the spectrum of light emitted by neon atoms.

B. There is an attractive force between the earth and moon. This is a scientific hypothesis that can be tested and confirmed by measuring the force of gravity between the earth and moon.

D. Summer days are the hottest of the year. This is a scientific hypothesis that can be tested and confirmed by collecting temperature data during the summer months.

E. The sky is blue. This is a scientific hypothesis that can be tested and confirmed by observing the sky under different atmospheric conditions.

The statement "Halle Berry is attractive" is a subjective opinion that cannot be tested or confirmed through scientific investigation, hence it is not a scientific hypothesis. Attractiveness, as a concept, can vary widely based on personal, cultural, and social factors.

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A circuit is complete when there is a continuous path for electricity to travel from one end of the energy source to the other end.

Electric circuit: a way for current to travel. A battery or generator, a device that provides energy to the charged particles that make up the current, a device that uses current, such as a lamp, an electric motor, or a computer, and the connecting wires or transmission lines make up an electric circuit. Ohm's law and Kirchhoff's rules are two fundamental laws that quantitatively define how electric circuits function.

Several categories are used to categorise electric circuits. One-way current only flows through a direct-current circuit. As in most residential circuits, an alternating-current circuit transports current that pulses back and forth repeatedly every second.

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The nature of science is an extensive and multifaceted concept that refers to various qualities, including its subject matter, methodology, principles, and theories.

It is a process of systematic inquiry that aims to explain the natural world through empirical observation, testing, and interpretation.

Science is characterized by its openness to criticism, objectivity, and the search for evidence to support or refute hypotheses and theories.

Science is dynamic and continuously evolving, with new discoveries, theories, and innovations that challenge our understanding of the world around us.

The nature of science encompasses several key concepts, including the use of empirical evidence, peer review, and the scientific method.

Empirical evidence refers to observable, measurable, and testable phenomena that can be subjected to scientific inquiry.

Peer review is the process by which scientific findings are evaluated by other experts in the field, ensuring their accuracy and validity.

The scientific method is a structured approach to inquiry that involves formulating hypotheses, testing them through experimentation or observation, and drawing conclusions based on the data collected.

Scientific knowledge is tentative and provisional, meaning that it is subject to change in the light of new evidence or findings.

As a result, science is a self-correcting process that relies on continued experimentation, observation, and testing to refine and expand our understanding of the natural world.

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Answer: energy will be transferred from the warmer object to the cooler one. The movement of thermal energy from a substance at a higher temperature to one at a lower temperature is called heat. When a substance is heated, it gains thermal energy.

Explanation: