Which statement accurately describes planetesimals?

A. They are the origins of planets.
B. They formed from ice and rocks.
C. They were created during the big bang.
D. They contain 98% of matter in the solar system

Answer:

5.25%

Explanation:

From the question given above, the following data were obtained:

Accepted value = 238857 miles

Measured value = 226316 miles

Percentage error =.?

Next, we shall determine the absolute error. This can be obtained as follow:

Accepted value = 238857 miles

Measured value = 226316 miles

Absolute Error =?

Absolute Error = |Measured – Accepted|

Absolute Error = |226316 – 238857|

Absolute Error = 12541

Finally, we shall determine the percentage error. This can be obtained as follow:

Accepted value = 238857 miles

Absolute Error = 12541

Percentage error =.?

Percentage error = absolute error / accepted value × 100

Percentage error

= 12541 / 238857 × 100

= 1254100 / 238857

= 5.25%

Therefore, the percentage error is 5.25%.

Answer:

first object final velocity =2m/s

second = 12m/s

Explanation:

i hope this will help you,..,

Answer:

Explanation:

We can use the Pythagorean theorem to find the resultant velocity of the passenger:

Resultant velocity = sqrt((8 m/s)^2 + (4 m/s)^2)

Resultant velocity = sqrt(80) m/s

Resultant velocity ≈ 8.94 m/s

To find the direction of the resultant velocity, we can use trigonometry. The angle between the north direction and the direction of the resultant velocity is given by:

theta = arctan(4/8)

theta = arctan(0.5)

theta ≈ 26.57 degrees

So the passenger's resultant velocity is 8.94 m/s at an angle of approximately 26.57 degrees east of north.

According to given information to find the weight of the car, we can use the concept of pressure and area. The car weighs approximately 4.8 x 10³ N.

1. The absolute pressure in each tire is given as 2.0 x 10⁵ Pa.
2. The area of each tire in contact with the ground is given as 0.024 m².

To calculate the weight of the car, we can use the formula:

Pressure = Force / Area

Rearranging the formula, we have:

Force = Pressure x Area

Now, let's plug in the values:

Force = (2.0 x 10⁵ Pa) x (0.024 m²)

Multiply the values:

Force = 4.8 x 10³  N

Therefore, the weight of the car is approximately 4.8 x 10³  N.

Conclusion ,The car weighs approximately 4.8 x 10³  N.

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The radius of the tire can be determined by equating the maximum static frictional force between the stone and the tread channel to the centripetal force acting on the stone. The radius is calculated to be 0.54 meters.

To calculate the radius of the tire, we consider the forces acting on the stone when it flies out of the tire's tread. The maximum static frictional force is given by the coefficient of static friction multiplied by the normal force, which is 0.9 times 1.8 N, equaling 1.62 N. This force provides the centripetal force for the stone.

Equating the maximum static frictional force to the centripetal force, we have 1.62 N = (mass of the stone) × (velocity^2 / radius). Substituting the given values, we can solve for the radius, which is calculated to be 0.54 meters.

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The boy near the outer edge has the greater centripetal acceleration.

As the merry- go- round is turning at a constant rate, it means it has constant angular velocity.

The rate at which a particle or an object rotates around a specific point or center within a given period of time is known as its angular velocity.

In terms of angular velocity,

Centripetal acceleration \(a_{C} = rw^{2}\)

where, r is the radius of the circle

and w is the angular velocity

At the constant angular velocity

Centripetal acceleration is directly proportional to the radius of the circle.   \(a_{C}\) \(\alpha\) \(r\)

It means as the radius of the circle increases, centripetal acceleration also increases and vice versa.

As the boy near the outer edge has a larger radius in comparison to the girl towards the center.

That’s why when a boy and a girl are riding a merry-go-round which is turning at a constant rate, the boy who is near the outer edge will have the greater centripetal acceleration.

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Answer: The greater an object's mass, the more gravitational force it exerts.

Explanation: So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive. Sorry if I get this wrong. I am in 5th grade! ♥

The gravitational attraction between the Sun and Earth is stronger than the attraction between the Sun and the Moon, principally because of the Sun's greater mass and greater distance from Earth.

An object's mass affects how much gravitational pull it exerts. Both the Earth and the Moon are much less massive than the Sun. Approximately  330,000 times more massive than the Earth, and roughly 27 million times more massive than the Moon, is the Sun. Because of the Sun's greater mass, its gravitational pull is thus much stronger.

The strength of the gravitational force between two objects is greatly influenced by their distance from one another. The Sun and Earth are separated from one another by a far smaller distance than the Sun and Moon. The Sun is located roughly 150 million kilometers from Earth, while the Moon is located roughly 384,400 kilometers from the Sun on average. The inverse square law asserts that the gravitational force decreases with increasing distance, and that it is only one-fourth as strong when two objects are twice as far apart.

Hence, the gravitational force between the sun and earth is larger than the sun and the moon due the mass of the sun and earth is greater than the moon and sun. The distance between the sun and the earth is comparatively smaller than the distance between the sun and the moon.

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With a potential difference of 14 volts across it, the 10.0 ohm resistor dissipates 19.6 watts of electrical power.

Any equation connecting power to current, voltage, and resistance may be used to calculate the power wasted by each resistor.

The following formula must be used to determine the amount of electrical power a resistor dissipates in a parallel circuit:

P = V²/R

In this case, the resistance is 10.0 ohms and the potential difference is 14 volts.

These values are combined together to give us:

P = (14 V)²/ 10.0 Ω

P = 196 V²/ 10.0 Ω

P = 19.6 W

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The percentage change in quantity supplied divided by the percentage change in price is how the term "elasticity of supply" is defined.

The relationship between a change in quantity supplied and a change in price is measured by price elasticity of supply. Elasticity measures how sensitive one variable is to changes in another variable, most frequently the change in amount demanded in relation to changes in other factors, such price. The availability of non-essential items like soft drinks, where there are numerous alternatives and options, is an illustration of an elastic supply. As consumers would choose different soft drink brands or prefer close alternatives, a significant price rise won't have a negative impact on supply. The percentage change in quantity offered divided by the percentage change in the commodity's price is known as the elasticity of supply, or ES. There is some significance to supply's price elasticity: Es = indivisible, The demand curve responds substantially to the horizontal supply curve.

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The new velocity of the object after the event will be 7.99 m/s by using formula of Kinetic Energy.

The initial velocity of the object = 11.2 m

The given mass of the object = 50 kg

Energy transferred after collision of the two objects as Work = 1539 J

We need to find the final velocity of the object.

We will start by deriving the energy of the moving object.

Kinetic Energy = (mv²)/2

Kinetic Energy = (50 * 11.2 * 11.2)/2

Kinetic Energy = 3136 J

We now know the initial Kinetic Energy and the amount of energy that was transferred. Now, we need to find the resulting energy.

Final energy = initial kinetic energy - ending kinetic energy

Final energy = 3136 - 1539

Final energy = 1597 J

Now, Kinetic Energy = (mv²)/2

1597 =  (50 * v²)/2

3194 = 50 * v²

v² = 63.88

v = 7.99 m/s

Therefore, the new velocity after the event is 7.99 m/s

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All particles have energy, and the energy varies depending on the temperature the sample of matter is in, which determines if the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy

Fluid clutches are used on equipment that is subject to frequent stopping.

Fluid couplings are used in various equipment in which the rotational torque must be transferred smoothly and without shock from the motor to the driven machine.

They are characterized by high transmittable torque and power, quick response times, and a good damping effect.

It absorbs and smooths torsional vibrations from the driveshaft, resulting in a longer lifespan of the drive components.

Equipment that is subject to frequent stopping.

For equipment that is subject to frequent stopping, fluid clutches are commonly used.

This is due to the fact that fluid clutches may be started and stopped frequently without causing harm or wear to the machine.

For this reason, fluid clutches are commonly used in machinery that needs a smooth start and stop, which is important to avoid any harm to the machinery.

In addition, fluid clutches are also less likely to slip, making them ideal for continuous running machines.

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Fluid clutches are used on equipment that is subject to frequent stopping. The correct answer is option C.

A fluid clutch is a type of mechanical device that transmits torque and rotational power from one shaft to another via a fluid.

Fluid clutches are used to couple two rotating shafts and control the amount of torque transferred between them.

Fluid clutches are used in many types of industrial machinery, including printing presses, machine tools, and pumps, as well as in cars and other vehicles.

These clutches can handle higher torque and power loads than most other types of clutches, making them well suited for heavy-duty applications.  

They are most commonly used on equipment that is subject to frequent stopping, such as industrial machines and vehicles, but can also be used on equipment that is subject to other forms of stress, such as misalignment and continuous running. So, the correct answer is option C.

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Answer:

c

True

True

False

True

**

metals, non-metal, high, lower

Explanation:

As moist air rises in the atmosphere, it cools and expands, which causes the moisture in the air to condense into clouds and precipitation.

A moist air mass is a volume of air with a high water vapor concentration. It is usually humid and can be found in tropical regions, where the temperature is high and the air is often saturated with water vapor. When this air mass rises in the atmosphere, it cools, and the water vapor begins to condense into clouds.

As the moist air mass rises in the atmosphere, it cools due to a decrease in pressure. The cooling causes the water vapor in the air to condense into clouds, and the clouds can then produce precipitation. The amount of precipitation that is produced will depend on factors such as the temperature, humidity, and the amount of moisture in the air mass.

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The second world war, and its war weapons, such as the v-2 rockets, had a great impact on the world until today, to answer this question we need that...

On April 11, 1945, US troops took the town of Bleicherode, in the Kohnstein region, where the V-2 factory was located. From there about 100 complete V-2s and thousands of parts and equipment were "captured" as war loot and transferred to the United States, where they formed the basis for practical studies of the missile defense program.

With this information, we can say that because it was a base discovered by US troops, none of the alternatives is correct, as it was not the Soviets who discovered it, and that the base was also located in the central part of Germany.

The v-2 factory was located in Kohnstein, central germany, by this claim, none of the alternatives is correct.

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Answer:

13.7795276 Inches

Explanation:

A negaive ion has more electrons bound to it than protons in its nucleus.

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Explanation:

The pressure will become 2.68 atm when expressed in atmospheres.

The act of shifting a quantity's measurement between two units of measurement is known as unit conversion. Usually, multiplicative conversion factors are used, which change the value of the measured amount without altering its effects.

The metric system typically requires moving a decimal point in order to translate from one unit to another.

The given data is 39.5 \(lb/in^2\)

we have to convert it into atmospheres

The pressure is :

39.5  \(lb/in^2\) ×  \(\frac{1 atm}{ 14.7 lb/in^2}\)

because the conversion factor is 14.7  \(lb/in^2\)

thus the given pressure becomes ;

Pressure = 2.68 atm

The pressure will become 2.68 atm when expressed in atmospheres.

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The line spectra supports the quantization of energy, because there are sharp emission lines demonstrating discrete energy levels.

When an element emits energy in the form of radiation, it produces a spectrum of colors on a photographic plate.

This spectrum can either be continuous or discrete.

In continuous spectrum the spectrum continues without any discrimination between two regions.

Also, the line spectrum consists of discrete and sharp lines, which shows the emission of radiation in a certain amount in a certain time, with a break between emission.

Thus, the line spectra supports the quantization of energy, because there are sharp emission lines demonstrating discrete energy levels.

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Ignoring the atmospheric pressure, 45 percentage of the mass will be submerged if a 0.3-kg object with half the density of human fatty tissue is placed in water.

How does the weight of the displaced water compare to the buoyant force acting on a submerged object?

The weight of the fluid displaced determines the buoyant force acting on a submerged item. By comparing an object's mass in air and its effective mass when submerged in water (density = 1 gramme per cubic centimetre), this concept can be used to determine the volume and, consequently, the density of an irregularly shaped object.

Percentage of the mass will be submerged will be equal to (density of object /density of fluid)*100%

Density of object is 0.45kg/L

Density of fluid is 1kg/L

Percentage of the mass will be submerged will be 0.45/1 *100% i.e. 45%

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The generator power will be 59 kW. Power drop is the main factor for finding the generated power.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

Power drop = 5%

The relation of the frequency change with the power drop is;

\(\rm \frac{df}{dp} =5\%\\\\ \frac{f_{rated-f_1}}{P_{rated}-P_1}=0.05\\\\ \frac{f_{rated-60}}{100-61}=0.05\\\\ f_{rated}=61.95\)

For the grid frequency, 59.9 Hz

\(\rm \frac{f_{rated-f_2}}{P_{rated}-P_2}=0.05\)

\(\rm \frac{61.95-f_2}}{100-P_2} =0.05\\\\ 100-P_2 =20(61.95-59.9)\\\\P_2=100-41 \\\\ P_2=59 \ kW\)

Hence, the generator power will be 59 kW.

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employing radiation You need some sort of authorization before you can operate with energy that is being sent through space as waves or particles.

The emission or transmission of energy as waves or particles across a material medium or across space is referred to as radiation. This includes electromagnetic radiation from sources like radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (particle radiation). In physics and allied fields, a wave is a dynamic disturbance that propagates and causes one or more quantities to depart from equilibrium. When a wave is periodic, its component portions oscillate at a specific frequency frequently in the vicinity of an equilibrium (resting) value.

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Answer:

0.267 m/s^2

Explanation:

6 km/hr * 1hr/ 3600 sec * 1000m/ 1 km

1.67 m/s to 3 m/s

vf=vi+at

3 m/s= 1.67 m/s+ a(5 s)

a=0.267 m/s^2

Answer:

The pressure the hand is less than the pressure on the fingers holding the string

Explanation:

The force with which the archer is pushing against the bow = 120 N

The area on which the force acts on the hand > The area the force acts on the fingers

Pressure = Force/Area

Pressure ∝ 1/Area

The larger the area, the lesser the pressure

The pressure acting on the hand which exerts the force with a larger area is less than the pressure on the finger which exerts the same force on a smaller area

The correct option is therefore;

The pressure the hand is less than the pressure on the fingers holding the string

The statement that is most true concerning the current through each resistor and the voltage measured across each resistor is the current is the same through both resistors, and so is the voltage across both resistors.

The equivаlent resistаnce of а combinаtion of resistors depends on both their individuаl vаlues аnd how they аre connected. The simplest combinаtions of resistors аre series аnd pаrаllel connections. In а series circuit, the output current of the first resistor flows into the input of the second resistor; therefore, the current is the sаme in eаch resistor.

In а pаrаllel circuit, аll of the resistor leаds on one side of the resistors аre connected together аnd аll the leаds on the other side аre connected together. In the cаse of а pаrаllel configurаtion, eаch resistor hаs the sаme potentiаl drop аcross it, аnd the currents through eаch resistor mаy be different, depending on the resistor. The sum of the individuаl currents equаls the current thаt flows into the pаrаllel connections.

Your question is incomplete, but most probably your full question can be seen in the Attachment.

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As a result, the system's maximum spring potential energy U is given by: U = (2π^2MD^2)/P^2

Potential energy is the energy stored by an item as a result of its location relative to other objects, internal tensions, electric charge, or other reasons. Potential energy is stored energy that is affected by the relative location of various components in a system. When a spring is squeezed or extended, its potential energy increases. A steel ball has higher potential energy when lifted above ground than when it falls to Earth.

Here,

The maximum spring potential energy U can be calculated using the equation:

U = (1/2)kD^2

where k is the spring constant, which can be found from the period of oscillation using the equation:

k = (4π^2M)/P^2

Substituting the expression for k into the equation for U, we get:

U = (1/2)((4π^2M)/P^2) * D^2

So the maximum spring potential energy U of the system is given by:

U = (2π^2MD^2)/P^2

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The speed of the second bowling ball after collision is 1.55 m/s

Speed can be defined as the ratio of distance to time of a body.

To calculate the speed of the second bowling ball after collision, we use the formula below

Formula:

v = mu/m'................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the second bowling ball is 1.55 m/s fast.

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kinetic energy is (m·s²)/2

m = mass

s = speed

so,

500 = (30 x s^2 )/2

1000 = 30 x s^2

100/3 = s^2

s = \(\frac{10\sqrt{3} }{3}\)