Black and splinter cleavage barely scratches glass​

Answer:

The planets of the solar system are 8:

Mercury is the planet closest to the sun, and therefore the hottest planet in stable conditions. It has an average temperature of 160º C, but with nights of up to -170º C. It is a rocky planet, and it does not have satellites. Its period of rotation around the sun is 88 days.

Venus is also a rocky planet, but considerably larger than Mercury. It has an average temperature of 460º C, due to its enormous atmospheric pressure, thus surpassing Mercury, which is even closer to the sun. Its rotation period is 225 days, and it does not have satellites either.

The Earth, our planet, is the only one with ideal conditions for the development of life: it has a rotation of 365 days, an average temperature of 15ºC and water in sufficient abundance to allow the development of oxygen-producing vegetation.

Mars, the last rocky planet in the chain, has a rotation period of 687 days, an average temperature of -46º C and minimal amounts of water. It has 2 satellites.

Then we have the gaseous planets, which are Jupiter, Saturn, Uranus, and Neptune. These do not have a solid surface, but are composed of gases (and portions of ice due to the extremely high temperature they have, from -120ºC to -220ºC) and enormous amounts of satellites. These are the least fit for life, due to their temperature and lack of solidity.

Answer:

Look below.

Explanation:

Mercury is the closest planet to the sun. It rotates slowly — about twice for every three orbits it completes. Slightly larger than Earth's moon, it is the smallest planet in the solar system. It has no moons, no rings, and an atmosphere so thin that scientists classify it as an exosphere.

The second planet from the sun, Venus is slightly smaller than Earth.The heat and pressure make the planet decidedly inhospitable to life.

Earth, the third planet from the sun and the largest terrestrial planet, is the only planet known to host living beings and the only one known to have liquid water on its surface. The atmosphere, made of mostly nitrogen, oxygen and carbon dioxide, is crucial to Earth's ability to support life.

Mars, the fourth planet from the sun.The red color of the surface comes from iron oxide or rust in the soil. The topography is characterized by large volcanoes and deep valleys, and Mars experiences frequent planet-wide wind storms. Some of the surface features of Mars, such as dry river beds, hint to the possibility that water previously existed on the planet and may still flow under the surface.

 Jupiter

Jupiter is the largest planet in our solar system

Jupiter's mass is 318 times greater than Earth's.  Jupiter’s magnetic field is 20,000 times stronger than Earth’s and it has the strongest radio emissions of any planet in the solar system. as of April 2011 has 63 known moons in orbit around it, the largest of which are Io, Europa, Ganymede and Calliso.

Saturn, the sixth planet from the sun, is also a gas giant, and it's most impressive feature as seen from afar is an extensive and complex ring system. The rings orbit the planet in a thin band about a mile thick. The radius of Saturn is about 9.5 times that of Earth, and instead of one paltry moon, it boasts 62. The interior of Saturn, like Jupiter, is made of mostly hydrogen and helium. Nearing the core, the intense pressure turns the gases into liquids and ultimately into a metallic form that conducts electricity.

While most planets spin on their axis with a slight tilt, the ice giant Uranus spins on an axis parallel to its orbit. With a diameter of 31,518 miles (50,723 kilometers), this cold planet is four times the size of Earth and is made of a large atmosphere of methane with a dense core of frozen methane. Uranus has a faint ring system and 27 moons in its orbit.

The blue planet Neptune is the farthest one from the sun and, like Uranus, is a very cold place.  one year on Neptune is 165 Earth years. The atmosphere is mostly methane, which gives the planet its blue color. The cold interior of the planet is mainly methane ice. Like all the outer planets, Neptune, like Uranus, has a diameter roughly four times that of Earth. Thirteen moons and a faint ring system orbit the planet.

Saturn

Saturn has 53 named satellites

Saturn has the lowest density of any planet in our solar system. It has a rocky core composed of liquid metallic hydrogen and elements consistent with the primordial solar nebula (gaseous cloud) that formed the solar system. Saturn’s most prominent feature is its rings, first observed by Galileo in 1610. The rings are composed of millions of small particles of rock and ice, each having its own independent orbit around the planet. Although the other gas planets also have rings, it is not yet known why Saturn’s are so prominent.

Uranus

Uranus is the only gas giant with its equator at a right angle to its orbit. It was also the first planet to be discovered through a telescope. It has 13 known rings that are dark and composed of dust and particles up to 10 meters in diameter. Uranus has 5 large moons as well as 10 smaller ones that were discovered by the Voyager 2 probe. The methane in Uranus’s upper atmosphere is what gives the planet its blue color.

Neptune

Neptune’s existence was the first to be predicted by mathematical calculations before the planet was actually seen. Neptune's mass is approximately 17 times greater than Earth’s. Its winds can reach up to 2,000 km per hour, the fastest in the solar system.

Answer:

The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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Answer:

No

Explanation:

You could try to give it enough to fill all valence electrons in all of the atoms in the conductor, but practically this could not be achieved.

The definition of an experimental control is the variable we change in the set up of an experiment (option A)..

An experimental control are techniques that scientists utilize to minimize the effects of extraneous experience and environmental variables as well as to strengthen the inference that changes in the dependent variable are due to the independent variable.

The experimental control allows the experimenter to minimize the effects of factors other than the one being tested.

Therefore, it can be said that the definition of an experimental control is the variable we change in the set up of an experiment.

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Answer:

1) a)  I₁ = 0.2941 kg m², b)  I₂ = 0.2963 kg m², c) I_{total} = 0.5904 kg m²

3)   α = 6.31 10⁶ rad / s²

Explanation:

1) The moment of inertia for bodies with high symmetry is tabulated, for a divo with an axis passing through its center is

         I = ½ m r²

a) moment of inertia of the upper disk

        I₁ = ½ m₁ r₁²

        I₁ = ½ 1,468 0.633²

        I₁ = 0.2941 kg m²

b) upper aluminum disc moment of inertia

        I₂ = ½ m₂ r₂²

        I₂ = ½ 1.479 0.633²

        I₂ = 0.2963 kg m²

c) the moment of inertia is an additive scalar quantity therefore

         I_{total} = I₁ + I₂

         I_{total} = 0.2941 + 0.2963

         I_{total} = 0.5904 kg m²

3) ask the value of the angular acceleration, that is, the second derivative of the angle with respect to time squared

indicate the angular velocity of the system w = 400 rev / s

Let's reduce the SI system

        w = 400 rev / s (2π rad / rev) = 2513.27 rad / s

as the system is rotating we can calculate the centripetal acceleration

          a = w² R

          a = 2513.27² 0.633

          a = 3.998 10⁶ m / s²

the linear and angular variable are related

          a = α r

          α = a / r

          α = 3.998 10⁶ / 0.633

          α = 6.31 10⁶ rad / s²

Using Ohm's Law, we can find the voltage across the circuit:

V = IR = (0.8 A)(7 Ω) = 5.6 V

The voltage across the lightbulb is:

VL = VB - VR = 9.0 V - 5.6 V = 3.4 V

Using Ohm's Law again, we can find the resistance of the lightbulb:

RL = VL / IL = 3.4 V / 0.8 A = 4.25 Ω

To find the internal resistance of the lightbulb, we subtract the resistance of the wires and the resistor from the total resistance of the circuit:

Rinternal = RL - Rwire - Rresistor

Assuming negligible resistance in the wires, we can simplify to:

Rinternal = RL - Rresistor = 4.25 Ω - 7 Ω = -2.75 Ω

The negative result means that the assumption of negligible resistance in the wires is not valid. There is some resistance in the wires, and the internal resistance of the lightbulb cannot be determined with the given information.

Answer:

C

Explanation:

The density is what determines if it will float. Lower densities float, while higher densities sink. Density takes mass and volume into account.

The relationship that determines an object's ability to float in a liquid is option : "Density of the object < Density of the liquid."  The option 3 is correct.

This principle is known as Archimedes' principle. When an object is placed in a fluid (liquid or gas), it experiences a buoyant force that opposes the force of gravity. The buoyant force is determined by the difference in density between the object and the fluid it's immersed in. If the density of the object is lower than the density of the liquid, the object will experience a greater buoyant force, causing it to float. Conversely, if the object's density is greater than the density of the liquid, it will sink. Hence option 3 is correct.

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--The complete Question is, Which of the following relationships determines an object’s ability to float in a liquid?

Group of answer choices

1. Weight of the object < Volume of the object

2. Mass of the object < Volume of the liquid

3. Density of the object < Density of the liquid

4. Density of the object > Density of the liquid--

The progress toward my three physical fitness goal can be seen below:

This is referred to as a form of physical activity which makes an individual fit and also improves the general well being of the person involved and examples include running, jogging, weight lifting etc.

The physical fitness goal which was set was to ensure that I become healthy from being obese by shedding fat in the body and the results have been a slimmer arm and body.

There was also the need to improve endurance and it has been improved such that the revs which are done during exercises have been increased thereby leading to an increase in the intensity of the activities being done ti achieve the required result.

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This question involves the concepts of the equations of motion.

It took him "1.4 s" to stop.

In this scenario, we will use the first equation of motion to find out the time taken by the sled to stop.

\(v_f=v_i+at\)

where,

\(v_f\) = final velocity of the sled = 0 m/s

\(v_i\) = initial velocity of the sled = 282 m/s

a = decceleration = - 201 m/s²

t = time taken = ?

Therefore,

\(0\ m/s=282\ m/s + (-201 m/s^2)t\\\\t=\frac{282\ m/s}{201\ m/s^2}\)

t = 1.4 s

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The maximum pressure of the block is 3560 N/m².

Pressure can be defined as the force acting perpendicular per unit surface.

The S.I unit of pressure is N/m².

To calculate the  maximum pressure from the question, we use the formula below.

⇒ Formula:

⇒ Where:

From the question,

⇒ Given:

Substitute these values into equation 1

Hence, The maximum pressure of the block is 3560 N/m².

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If a third resistor is added in SERIES, what changes happens to the....

When you add a third resistor in series, the total resistance of the circuit increases. This is because the current has to flow through all three resistors, so it has to overcome more resistance. The total voltage across the circuit stays the same, because the voltage of the battery is constant. However, the current decreases, because the same amount of current is now flowing through a larger resistance.

The voltage across each resistor also decreases, because the total voltage is divided among the three resistors. The current through each resistor also decreases, because the same current is now flowing through a larger resistance.

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Answer:

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. ... It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.

Explanation:

AnsA

Explanation:

The amount of matter in an object

It is essential to remember that the materials utilised, the kind of block, and the charge circumstances all affect how well these approaches work. To prevent breaking the blocks or hurting oneself, it's crucial to handle the blocks cautiously.

Rub the L block with a substance that has a strong propensity to give up electrons, such wool or silk, as one way to do this. The L block acquires electrons from the substance when it is rubbed against it, leaving the block with a net positive charge. Similar to this, you may rub the R block with anything that has a strong propensity to draw electrons, such hair or rubber. The R block will then receive electrons from the substance, leaving the block with a net negative charge as a result.

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Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.

How do digital signals work?

An established or one that represents data as a step made up of discrete values is known as a digital signal. There is no noise produced by digital signals. Electronic signals sent as pulses are used to transmit digital signals to computers. These signals can be found in things like digital phones and computers.

Because digital signals are used to transport data to and from the cloud, it should be noted that videos are said to stream from the cloud to a computer without quality degradation.

Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.

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or the 3500-lb car

W= 3500lb

A). \(W= mg\)

\(m=\frac{3500}{32.2} = 108.69lbm\)

B). \(W=3500lb*4.448\frac{N}{lb}=W= 15568N\)

C).

\(W= mg\\15568= m*9.81\\m= \frac{15568}{9.81} \\m= 1586.95kg\)

Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of being counted in a bodily body, till the invention of the atom and particle physics. It changed into determined that distinctive atoms and one-of-a-kind elementary debris, theoretically with an identical amount of depend, have nevertheless specific masses. Mass in contemporary physics has a couple of definitions that are conceptually awesome, but physically equivalent. Mass can be experimentally defined as a measure of the frame's inertia, which means the resistance to acceleration (trade-off speed) when an internet pressure is implemented. The object's mass also determines the energy of its gravitational attraction to different bodies.

In physics, mass is not the same as weight, despite the fact that mass is frequently determined by measuring the object's weight through the use of a spring scale, in place of a balance scale evaluating it without delay with regarded loads. An item on the Moon might weigh less than it does on earth because of the decreased gravity, however, it would nonetheless have the same mass.

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Answer and Explaination:

To solve this problem, we can analyze the forces acting on the mass as it travels up the inclined plane. We'll consider the gravitational force and the force exerted by the spring.

1. Gravitational force:

The force due to gravity can be broken down into two components: one perpendicular to the inclined plane (mg * cosθ) and one parallel to the inclined plane (mg * sinθ), where m is the mass and θ is the angle of the inclined plane.

2. Force exerted by the spring:

The force exerted by the spring can be calculated using Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position. The force can be written as F = -kx, where F is the force exerted by the spring, k is the spring constant, and x is the displacement from the equilibrium position.

Given:

Mass (m) = 5.0 kg

Compression of the spring (x) = 20.0 cm = 0.20 m

Angle of the inclined plane (θ) = 30°

First, let's find the force exerted by the spring (F_spring):

F_spring = -kx

To find k, we need the spring constant. Let's assume that the spring is ideal and obeys Hooke's Law linearly.

Next, let's calculate the gravitational force components:

Gravitational force parallel to the inclined plane (F_parallel) = mg * sinθ

Gravitational force perpendicular to the inclined plane (F_perpendicular) = mg * cosθ

Since the inclined plane is frictionless, the force parallel to the inclined plane (F_parallel) will be canceled out by the force exerted by the spring (F_spring) when the mass reaches its highest point.

At the highest point, the gravitational force perpendicular to the inclined plane (F_perpendicular) will be equal to the force exerted by the spring (F_spring).

Therefore, we have:

F_perpendicular = F_spring

mg * cosθ = -kx

Now, let's substitute the known values and solve for k:

(5.0 kg * 9.8 m/s^2) * cos(30°) = -k * 0.20 m

49.0 N * 0.866 = -k * 0.20 m

42.426 N = -0.20 k

k = -42.426 N / (-0.20 m)

k = 212.13 N/m

Now that we know the spring constant, we can calculate the maximum potential energy stored in the spring (PE_spring) when the mass reaches its highest point:

PE_spring = (1/2) * k * x^2

PE_spring = (1/2) * 212.13 N/m * (0.20 m)^2

PE_spring = 4.243 J

The maximum potential energy (PE_spring) is equal to the maximum kinetic energy (KE_max) at the highest point, which is also the energy the mass has gained from the spring.

KE_max = PE_spring = 4.243 J

Next, we can calculate the height (h) the mass reaches on the inclined plane:

KE_max = m * g * h

4.243 J = 5.0 kg * 9.8 m/s^2 * h

h = 4.243 J / (5.0 kg * 9.8 m/s^2)

h = 0.086 m

The height the mass reaches on the inclined plane is 0.086 m.

Now, we can calculate the distance traveled.

A 5.0 kg object compresses a spring by 0.20 m with a spring constant of 25 N/m. It climbs an incline, reaching a maximum height of 0.0102 m before coming back down, traveling a total distance of 0.0428 m.

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dssfbl;wihjkefdbvnfljedk.s;n.lasbcnk.esz

9.8 N is the magnitude of the force that maintains circular motion acting on the puck.

32.53 m/sec is the linear speed of the puck.

The term "force" has a specific meaning in science. At this level, it is quite acceptable to refer to a force as a push or a pull. An item does not have a force inside of it or within it. Another item applies a force to another. The concept of a force is not restricted to living or non-living entities. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

As we know, from free body diagram, when the system is in equillibrium, the force acting on the puck on the table is as follows:

When the air puck of mass is revolving round the circle, then the tension (T) in the top string and the bottom of the string is same.

F = T

F = 9.8 N

Now, calculate the velocity of the puck:

From the given data, the air puck moves in a circular path. Hence, the tension in the top string is equal to the centripetal force acting on the puck.

Thus, the expression for the tension in the top string is as follows:

T = mv² / R

The velocity of the puck is as follows:

Mg = mv² / R

v² = MgR / m

v² = (2.7 × 9.8 × 1.2 ) / 0.030

v² = 1058.4

v = \(\sqrt{1058.4}\)

v = 32.53 m/sec

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Answer:

convection currents

Explanation:

Answer:

Pencil lead.

Explanation:

no need for an explemation you can put two and two together XD

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

It's pencil lead because the it's taken from a mine and then it goes inside a wooden pencil and everybody uses them if you're not using a pen.

Answer:

we understand it by electromagnetic spectrum. and we velength is the distance between identical location on adjecent waves ( see figure below)

The term velocity is the combination of speed and direction.

The total displacement covered by any object per unit of time is known as velocity. The generally considered unit for velocity is a meter per second. It depends on the magnitude as well as the direction of the moving body. The unit of velocity is meter/second. It can also be represented by the infinitesimal rate of change of displacement with respect to time.

If an object is moving eastwards, then its velocity is expressed as being eastwards. If an object is moving southwards, then its velocity is described as being southwards. So an airplane moving towards the north with a speed of 450 km/hr has a velocity of 450 km/hr northward.

Speed has no effect on direction as the speed of any object or body is a scalar quantity and the velocity at any given time is expressed with the magnitude of velocity as well as with the direction of motion of an object.

The term velocity is the combination of speed and direction. therefore the correct option is option C.

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The wavelength of light that should be used to obtain fringes that are 0.0045 m wide after reducing the distance between the screen and the slit by half is 2.25 * 10^7 Å.

Huygens's Principle states that every point on a wavefront can be considered as a source of secondary spherical wavelets that spread out in all directions with the same speed as the original wave. The new wavefront is formed by the envelope of these secondary wavelets at a later time.

Now, let's consider a Young's double-slit experiment. In this experiment, when light passes through two narrow slits, it creates an interference pattern on a screen behind the slits. The fringe width is the distance between two consecutive bright or dark fringes in the pattern.

Given that the fringe width obtained is 0.6 cm and the wavelength of light used is 4500 Å (Angstroms), we can calculate the wavelength of light required to obtain fringes that are 0.0045 m wide.

We can use the formula for fringe width in Young's double-slit experiment:

w = (λ * D) / d

Where:

w is the fringe width,

λ is the wavelength of light,

D is the distance between the screen and the double slits, and

d is the distance between the two slits.

Let's calculate the value of D/d using the given information:

D/d = w / λ

= 0.006 m / 4500 Å (1 m = 10^10 Å)

= 0.006 * 10^10 / 4500 m^-1

Now, if the distance between the screen and the slit is reduced by half, the new value of D/d would be:

(D'/d) = (0.006/2) * 10^10 / 4500 m^-1

Now, we can rearrange the equation to solve for the new wavelength (λ'):

(λ' * D') / d = (D/d)

λ' = (D/d) * d / D

= [(0.006/2) * 10^10 / 4500] * (4500 / 0.006) Å

= 0.0045 m * 10^10 / 2 Å

= \(0.00225 * 10^{10\) Å

=\(2.25 * 10^7\)Å

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Heya!!

For calculate final velocity, lets applicate formula

                                                \(\boxed{V=V_o+a*t}\)

                                                 Δ   Being   Δ

                                            V = Final Velocity = ?

                                         Vo = Initial velocity = 0 m/s

                                          a = Aceleration = 5 m/s²

                                                 t = Time = 12 s

⇒ Let's replace according the formula:

\(\boxed{V=0\ m/s +5\ m/s*12\ s}\)

⇒ Resolving

\(\boxed{V=60\ m/s}\)

Result:

The velocity after 10 sec is 60 meters per second (m/s)

Good Luck!!

The following would expect to be a strong electrolyte in solution (b) KCI is correct option.

When dissolved in water, a strong electrolyte produces a large concentration of ions in solution by totally dissociating into ions.  The following compounds are typically strong electrolytes in solution according to this definition:

These substances readily dissociate into ions in water and exhibit high electrical conductivity, making them strong electrolytes in solution.

Therefore, the correct option is (b).

The complete question is,

Which of the following would be a strong electrolyte in solution?

a) Al(OH)₃ b) KCI c) Pbl₂

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The metal bowl must displace 0.196 liters of castor oil in order to float.

Archimedes' principle states that when an object is placed in a fluid, the buoyant force on the object is equal to the weight of the fluid displaced by the object. In other words, the amount of fluid displaced by the object is directly proportional to the weight of the object.

We can use the weight density of castor oil, which is 9.42 N/L, to find the volume of oil displaced by the bowl.

Volume of oil displaced = Weight of bowl / Weight density of oil

Volume of oil displaced = 1.85 N / 9.42 N/L = 0.196 L

As a result, in order to float, the metal bowl must displace 0.196 liters of castor oil.

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