What is the mass of the object being weighed on the triple beam balance?
E. 230.6 g
g F. 236.4 g
g G. 326.5 g
H. 623 g​

Answer:

a 'Law'

Explanation:

Newton's laws of motion

Charles' Law      etc

The term "law"  is used to describe how things behave and is usually expressed in mathematical terms.

Scientific laws or laws of science are propositions that describe or forecast a variety of natural occurrences and are based on repeated tests or observations.

All branches of natural science use the word "law" in a variety of contexts (approximate, accurate, broad, or narrow) (physics, chemistry, astronomy, geoscience, biology). All laws are directly or indirectly dependent on empirical facts, and they are developed from data and can be further developed through mathematics.

It is generally accepted that they are discovered rather than invented and implicitly represent causal links that are fundamental to reality even though they do not expressly declare them.

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The energy released by the sun is the result of nuclear fusion.

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Answer:

see below

Explanation:

this is because particles in solids are packed very closely together, thus , the particles collide with each other frequently and thus transfer of energy is faster. however, particles in liquid are closely packed but not as close as in solid so the particles do not collide as frequently. thus, transfer of energy slower than in solid. furthermore, the particles in gas are spaced far apart from each other, thus the particles don't collide with each other frequently, thus transfer of energy is very slow in gas.

hope you get it,

please mark

Answer:

-2.4 m/s²

Explanation:

avg accel = Δv/Δt

v-i = 30 m/s

v-f = (30 m/s)(0.60) = 18 m/s

Δt = 5.0 sec

avg accel = (18 m/s - 30 m/s) / 5.0 s = (- 12 m/s) / 5 s = -2.4 m/s²

negative sign means it's slowing down

This statement is True. Neptune has a highly tilted rotation axis, much like Uranus, and very unlike Saturn's. This means that Neptune's poles experience extreme seasons, with three long summers and three long winters in each Neptune year.

Additionally, the planet's magnetic field is also highly tilted, with the magnetic axis offset from the planet's center by about three-quarters of the planet's radius. Overall, these unique characteristics make Neptune an intriguing and complex planet to study. Neptune has a moderately tilted rotation axis, similar to Uranus, but not as extreme. Its axial tilt is around 28 degrees, whereas Uranus has a significant tilt of approximately 98 degrees. This is in contrast to Saturn, which has a relatively smaller tilt of about 27 degrees. Consequently, Neptune's tilt results in pronounced seasonal changes and weather patterns, as observed on Uranus, but to a lesser extent.

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it's not necessary for a charged body actually to touch the ball of the electroscope for the leaves to diverge. When you touch the charged object with the ball, some electrons flow from the body to the ball and you can observe a deflection in the electroscope

An early scientific tool used to identify the presence of electric charge on a body is the electroscope. Due to the Coulomb electrostatic force acting on a test object, it can detect charge by the movement of the object. A substance's charge is proportional to its voltage.

The presence of an electric charge on a body can be found using a scientific tool called an electroscope. The versorium was the first electroscope with a pivoting needle, created in 1600 by British physician William Gilbert.

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Answer:

M = ρ V

V = 2.95E5 * 3.7E4 * 250 m^3 = 2.76E12 m^3      total volume of ice

M = 917 kg/m^3 * 2.76E12 m^3 = 2.53E15 kg

Answer:

8.5

Explanation:

To the nearest tenth of a year, it would take around 9.1 years when calculate compoundly for the account's worth to reach $20,600.

A loan or investment's initial principal as well as any accrued interest from earlier periods are both taken into account when calculating compound interest.

To resolve this issue, we can apply the compound interest formula:

A = P(1 + r/n)nt

where:

When A = $20,600, we need to determine t. Since we are aware that the initial investment would double after seven years, we can use the following formula to determine the yearly interest rate:

2 = (1 + r/n)^(nt)

If n is 1/7 (since the investment twice once every 7 years), 2 is the factor by which the investment doubles, and t is an unknown.

When we simplify this equation, we obtain:

t log(1 + r/7) = log(2)

When we solve for r, we get:

r = 7[(2^(1/t))-1]

Now that we have P, r, n, and A, we can enter them into the compound interest formula to find t:

$20,600 = $8,900(1 + r/1)^(1t)

2.318 = (1 + r)^t = log (2.318) / log (one plus r)

t is equal to log(2.318)/log(1 + 7[(2(1/t))-1]).

We can iteratively solve for t using a calculator, beginning with a first guess of 7 years (because the investment doubles every 7 years):

r = 0.0998 and A = $17,800 for t = 7 years

r = 0.0909 and A = $19,397 for t = 8 years.

r = 0.0833 and A = $20,416 for t = 9 years.

r = 0.0823 and A = $20,601 (closest to $20,600) for t = 9.1 years

As a result, it would take the account's value to reach $20,600 in around 9.1 years (to the nearest tenth of a year).

Therefore, when calculated compoundly, it would take approximately 9.1 years for the account's value to reach $20,600, to the nearest tenth of a year.

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The vector that results when one vector is divided into two additional vectors, known as component vectors, is referred to as a vector projection. Additionally, one will be perpendicular to the second vector, and one will be parallel to it.

projection of u on v=

\(\frac{u.v}{|v|} \\\\=\frac{-i+j+\pi .[5i+j-6\pi ]}{\sqrt{25+1+36} } \\\\ =\frac{-5+1-6}{\sqrt{62} } \\=\frac{-10}{\sqrt{62} }\)

The component of u with regard to v is the distance we cover when traversing u and is indicated by the letters v u. The projection of u onto v is known as the vector parallel to v. A unit vector in the direction of v is multiplied by the scalar comp v u to produce the vector known as proj v u, which represents the projection of u onto v. Proj v u is the vector obtained by drawing an arrow instead of the blue line segment that represents comp v u.

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Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

The kinetic energy of the system after the mass is released and has moved to a point where the potential energy has decreased to 70 J is 85 J.

The total mechanical energy of the system (spring and mass) is conserved, and is equal to the sum of the potential energy and kinetic energy:

E = PE + KE

At the initial point, the potential energy of the system is 155 J, and the kinetic energy is zero:

Ei = PEi + KEi = 155 J + 0 J = 155 J

At the final point, the potential energy of the system is 70 J, and the kinetic energy is unknown:

Ef = PEf + KEf = 70 J + KEf

Since the total mechanical energy is conserved, we can equate Ei to Ef:

Ei = Ef

155 J = 70 J + KEf

KEf = 155 J - 70 J

KEf = 85 J

Therefore, the kinetic energy of the system after the mass is released and has moved to a point where the potential energy has decreased to 70 J is 85 J.

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Friction, mechanical flexure of internal components, and electrical capacitance all contribute to hysteresis.

Errors in hysteresis If a measurement is performed in the same way, mistakes due to hysteresis are reproducible and so called systematic errors.

A pressure sensor's hysteresis error is the greatest variation in output at any measurement value within the sensor's defined range while approaching the point with increasing and then decreasing pressure.

The inherent reluctance of a material to return to its previous condition after adding and removing a physical change, such as an increase and reduction in temperature or pressure, causes hysteresis.

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The energy of the electron is 5.56 × 10^-19 J. The de Broglie wavelength of the electron is approximately 3.78 × 10^-10 m.

The de Broglie wavelength λ of a particle is related to its momentum p by the equation λ = h/p, where h is Planck's constant. For an electron, we have:

λ = h/p = h/(mv)

where m is the mass of the electron, v is its velocity, and λ is given as 590 nm. Since the energy E of an electron is related to its velocity by the equation E = (1/2)mv², we can rewrite the above equation as:

λ = h/(mv)

= h/(2Em/m)

= h/(2E)

where m is the rest mass of the electron. Solving for E, we get:

E = h/(2λ)

= (6.626 × 10^-34 J·s)/(2 × 590 × 10^-9 m)

= 5.56 × 10^-19 J

To find the de Broglie wavelength λ of an electron with energy equal to that of the photon of yellow light, we can use the equation:

E = hc/λ

where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon. Solving for λ, we get:

λ = hc/E

= (6.626 × 10^-34 J·s × 3.00 × 10^8 m/s)/(5.56 × 10^-19 J)

≈ 3.78 × 10^-10 m

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Its potential energies at O, A and B is related by  (B) UA - UB = U0 - UA.

When the pendulum bob is held at the horizontal position, it has the maximum potential energy, U0. As it falls, the potential energy decreases and the kinetic energy increases. When the bob is at position A, 30° away from the horizontal position, it has potential energy UA. As it continues to fall until the string is vertical, it has potential energy UB.

The difference between the potential energies at position O and position A is U0 - UA. The difference between the potential energies at position A and position B is UA - UB. Since the bob falls the same distance from position O to position A and from position A to position B, the difference in potential energy should be the same.

Therefore, U0 - UA = UA - UB.

Rearranging the equation gives us UA - UB = U0 - UA, which is answer choice (B).

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The magnitude of the total acceleration is 16.045m/s2

A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. at a point on the platform that is 1.25 m from the axis of rotation,

Initial angular speed is given as 0 = 2 rad/s, angular acceleration is given as = 3 rad/s 1.25, and time is given as 11.0 s.

From the angular displacement equation, we may deduce that = 0 t+ 1/ 2 t 2 =1.25 * 11.00+ 1/ 2 *3*(1.25) ^2.

Radians: =16.045

The magnitude of the total acceleration is 16.045m/s2

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Answer:

Explanation:

Ruler. A steel ruler aids the measurement and layout of straight lines. The ruler, also called "straightedge" or "straight-edged ruler," is a long, thin strip of wood, metal or plastic marked with increments of measurement.

Measuring Tape. The modern measuring tape's roughly palm-sized casing contains a coiled strip of metal marked with increments of measurement. The metal strip, called "tape," attaches to a spring which automatically retracts the tape into the casing following use.

Walking Tape Measure. The walking tape measure, also called "surveyor's measure," records the distance traveled by a wheel. An operator pushes the measure's wheel, similar to a bicycle wheel, by a handle as an attached ticker box displays feet or meters in the same format as a car's odometer.

Laser Measure. The laser measure offers point and shoot distance measurement. In its most basic form, a laser measure is a hand-held electronic device with a digital display.

A newton is defined as 1 kg⋅m/s2, which is the force which gives a mass of 1 kilogram an acceleration of 1 metre per second, per second.

The constant angular acceleration of the centrifuge is approximately -224.72 rad/s²

To find the constant angular acceleration of the centrifuge, we'll first need to convert the given angular speed from rev/min to rad/s and then use the following kinematic equation:

ω² = ω₀² + 2α(θ - θ₀)

where ω is the final angular speed (0 rad/s, since it comes to rest), ω₀ is the initial angular speed, α is the angular acceleration, θ is the final angle, and θ₀ is the initial angle.

1. Convert angular speed from rev/min to rad/s:
3450 rev/min × (2π rad/rev) × (1 min/60 s) ≈ 361.36 rad/s

2. Calculate the total angle rotated before coming to rest:
46.0 rev × (2π rad/rev) ≈ 288.88 rad

3. Use the kinematic equation to find the angular acceleration:
0² = (361.36 rad/s)² + 2α(288.88 rad - 0 rad)

Rearrange and solve for α:
α = - (361.36 rad/s)² / (2 × 288.88 rad) ≈ -224.72 rad/s²

The constant angular acceleration of the centrifuge is approximately -224.72 rad/s². The negative sign indicates that the acceleration is in the opposite direction of the initial angular speed, meaning it is decelerating.

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speed of wave with a wavelength of 4m and frequency of 11 Hz is 44m/s

wavelength can be defined distance between the 2 successive waves.

wavelength is expressed in m, indicated by Greek letter λ

Frequency can be defined as number of cycles completed in one second.

Frequency is expressed in hertz.

As we know when the wave moves with constant speed, the wavelength of wave is inversely proportional to frequency, hence the formula

speed = frequency X wavelength

we know the formula,

frequency= c/λ

f = frequency = 11 Hz

c = speed of light = ?

λ = wavelength = 4m

put in the formula,

frequency= c/λ

f X λ = c

4 X 11 =c

c = 44m/s.

The speed of wave is 44m/s.

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The correct answer is "Your latitude." The number of degrees of arc that Polaris (the North Star) is above the horizon depends on your latitude.

Polaris is located very close to the North Celestial Pole, which is the point in the sky directly above Earth's North Pole. If you are at the North Pole (latitude 90 degrees North), Polaris would appear directly overhead at an angle of 90 degrees above the horizon. As you move south from the North Pole, the angle decreases. At the equator (latitude 0 degrees), Polaris would appear on the horizon, or at an angle of 0 degrees above the horizon.

Therefore, the correct answer is "Your latitude." The other options you mentioned, such as mass, the core, and spiral, are not directly related to the angle at which Polaris appears above the horizon.

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The political conflict that wrecked colonial Pennsylvania in the middle of the eighteenth century stemmed from sources such as religious differences and disputes over land ownership and governance.

The political conflict in colonial Pennsylvania during the mid-18th century had multiple sources. One of the primary factors was religious tensions between different groups, particularly the Quakers and the Scotch-Irish Presbyterian settlers. The Quakers, who initially held significant political power, clashed with the Scotch-Irish over issues such as religious freedom and the role of religion in governance.

Another source of conflict was the disputes over land ownership. As Pennsylvania attracted a diverse range of settlers, conflicts arose regarding land boundaries and ownership rights. The proprietary system of land grants, controlled by the Penn family, led to grievances and conflicts over land distribution and access.

Additionally, there were disagreements over governance and representation. The Quaker-dominated government faced challenges in effectively representing the diverse interests and needs of the settlers. This led to growing frustrations among non-Quaker settlers, who sought greater representation and a voice in decision-making.

These various sources of conflict in colonial Pennsylvania during the mid-18th century ultimately contributed to a deteriorating political situation, hampering the stability and progress of the colony.

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Answer:

Because of the frictional force, the net force will oppose direction of the block and be directed towards the left even tho the spring exerts no force at this point

Answer:

304 K

Explanation:

Answer:

You are right correct option is D.

Answer:

I think D

Explanation:

Answer:

Most certainly yes

Explanation: First you have to define what friction is "A force that resist motion" while Mechanical advantage " is simply a measure of the output force to the input force". Hence in a mechanical system if you increase friction in the system, it reduces the mechanical advantage and vice versa.

The similarities in the atmospheric compositions of Mars and Venus can be explained by their proximity to the Sun, which is the main source of energy for both planets.

Energy is the capacity to do work. It is a fundamental physical property of objects and is the ability to cause change. Energy exists in many forms, such as kinetic, potential, thermal, electrical, chemical, nuclear and gravitational. All these forms of energy can be transformed from one form to another.

The Sun's radiation is strong enough to drive the same type of chemical reactions on both planets that produce the same type of atmospheres. This is despite the fact that Mars is much farther from the Sun than Venus, and Venus is much larger than Mars. The fact that their atmospheres have the same composition can be attributed to their shared proximity to the Sun and the intense ultraviolet radiation it produces.

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