Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _____ the work input. Decrease reduce increase.

Answer: There isn't a whole ton of oxygen in space, and if they run out, they will probably die.

Explanation:

This one kind of speaks for itself.

Answer:

105 g.m/s

Explanation:

The law of conservation of momemtum states that initial momemtum is equal to final momentum.

initial momentum of orange ball = 165 g.m/s

initial momentum of green ball = 0 g.m/s

final momentum of orange ball = 60 g.m/s

final momentum of green ball = x

165+0=60+x

⇒x = 165-60= 105 g.m/s

the momentum of the green ball right after the collision =105 g.m/s

Velocity is a vector quantity. The velocities of the two players will not be the same.

Speed is a scalar quantity. That is, it has magnitude but no direction. While velocity is a vector quantity. That is, it has both magnitude and direction.

Given that after a tennis match the two players dash to the net to shake hands. If they both run with a speed of 3 m/s, That means they both have the same speed but their velocities are not equal.

Their velocities are not equal in the sense that the two players are moving in opposite directions to each other.

Since they are moving in different direction, they will have two different velocities of 3m/s and - 3 m/s

Therefore, the two players moving in different velocities of 3m/s and - 3 m/s

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Large hydroelectric dams have significant environmental consequences for areas nearby.

Therefore, Making decisions about the development of hydroelectric dams requires balancing the environmental costs against the advantages of clean, renewable electricity.

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The process of acquiring information, monitoring, and detecting the characteristics of any phenomenon or an object is called Remote Sensing. This is done by measuring the radiation emitted or reflected by the said object or phenomenon from some distance. Remote Sensing is typically done via a satellite or an airplane to collect data on Earth and other planets in space.

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The capacitance value of a capacitor is measured in farads (F)

The SI unit for capacitance is referred to as Farads.

This is the ability of a device or circuit to store energy which is usually in

the form  of electric charges.

A capacitor on the other hand is the device which performs this function.

The formula for determining capacitance is denoted below:

C = q/V where C is capacitance, q is charges and V is voltage.

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When an astronaut moves away from Earth at close to the speed of light, according to the observer on Earth, the astronaut's pulse rate would appear to slow down. This phenomenon is known as time dilation, which is a consequence of Einstein's theory of relativity.

As the astronaut accelerates and approaches the speed of light, time slows down for them relative to the observer on Earth. This means that the time between each heartbeat for the astronaut will be longer from the observer's perspective. The observer would see the astronaut's pulse rate decrease compared to what they would normally expect.

This time dilation occurs because the speed of light is constant for all observers, and as an object approaches the speed of light, time slows down for that object. This effect has been observed in experiments and is a fundamental concept in the theory of relativity.

In summary, when an astronaut moves away from Earth at close to the speed of light, their pulse rate would appear to slow down from the perspective of an observer on Earth due to the phenomenon of time dilation.

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The activity in which a competitor displayed good sportsmanship towards me was during a football match.

This is an ethics or attitudes that show respect for the rules of a game and for the other players.

Sportsmanship was shown when i lost the deciding penalty and was consoled by the opponent.

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Answer:

324 J

Explanation:

KE= 1/2 m*v^2

1/2*8*9^2

324 joules (=^w^=) woof woof

Answer:

The answer is 0 J

Explanation:

Mass=3

Acceleration= 9.8

Height=0

The eqation is \(3(9.8)(0)\) or \(3*9.8*0\)

and if you do the math it adds up to 0 J

The potential energy of your 3 kg puppy that is sitting in the grass in your backyard would be 0 Joules .

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy .

ME = PE + KE

As for the given problem, we have to find out what the potential energy of your 3 kg puppy that is sitting in the grass in your backyard,

The potential energy of the puppy = m × g × h

                                                  = 3 × 9.8 × 0

                                                  = 0

Thus , the potential energy of your 3 kg puppy that is sitting in the grass in your backyard would be 0 Joules .

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Answer:

64 km/h

Explanation:

Answer:

Infinity = Never ending

Explanation:

The universe could be infinite, both in terms of space and time, but there is currently no way to test whether it goes on forever or is just very big. The part of the universe we are able to observe is finite, measuring about 46 billion light years in diameter.

The set of natural numbers is an infinite set. This kind of infinity is, by definition, called countable infinity. All sets that can be put into a bijective relation to the natural numbers are said to have this kind of infinity. This is also expressed by saying that the cardinal number of the set is aleph-naught (ℵ0).

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STARS ARE INFINITE , NUMBERS ARE INFINITE

Explanation:

Answer:

3420.39 N

Explanation:

Applying,

Fd = 1/2(mv²-mu²)................. Equation 1

Where F = force on the bumber, d = distance, m = mass of the car, v = final velocity, u = initial velocity.

make F the subject of the equation

F = (mv²-mu²)/2d............... Equation 2

From the question,

Given: m = 890 kg, v = 0 m/s (to rest), u = 1.4 m/s, d = 0.255 m

Substitute these values into equation 2

F = [(890×0²)-(890×1.4²)]/(2×0.255)

F = -1744.4/0.51

F = -3420.39 N

The negative sign denotes that the force in opposite direction to the motion of the car.

The rate of change of displacement is known as velocity. The rate at which velocity changes is called acceleration. Due to the fact that it includes both magnitude and direction, velocity is a vector quantity. Acceleration is likewise a vector quantity as it is only the rate of change of velocity.

Speed serves as the baseline for both velocities and acceleration measurements. Speed is a scalar quantity that measures the amount of distance traveled over a period of time. Acceleration and velocity are both vector quantities, which means they both employ magnitudes and a designated direction. The rate of motion of an object is measured by both speed and velocity. The fact that speed is a scalar quantity, nevertheless, means that it can be quantified.

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Answer:

9.8 m/s2

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2. When discussing the acceleration of gravity, it was mentioned that the value of g is dependent upon location.

Answer:

The gaps left between successive rails on a railway track, the reason is that the rails expand in summer. The gap is provided to allow for this expansion. If no gap is left, the expansion in summer will cause the rails to bend sideways. That will result in train accidents

Answer:

The gaps left between successive rails on a railway track, the reason is that the rails expand in summer. The gap is provided to allow for this expansion. If no gap is left, the expansion in summer will cause the rails to bend sideways. That will result in train accidents.

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Gneiss shows such banding. Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly classify the metamorphic rock.

Aluminum, iron, magnesium, and calcium are all present in various concentrations in the silicate mineral family. Tiny, glassy red garnet crystals are a common feature of gneiss and schist. a foliated, coarse-grained metamorphic rock that frequently includes bands of alternating light- and dark-colored minerals.

Schist forms at lower pressures and temperatures than gneiss. Gneiss almost always exhibits a banded texture with alternating lighter and darker coloured bands and lacks a clear cleavage. In the old crust of continental shields, gneisses are typical.

Such banding is visible in gneiss. Geologists employ alternating bands, known as "gneissose banding," to quickly classify metamorphic rock.

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tan Θ = H / x    where Θ is angle to right balloon

X = H / tan Θ     where H is the difference in height

x = (61.0 - 48.2) / tan 13.3 = 54.1 m     distance apart

The modulus of elasticity, E, is a measure of a material's stiffness and ability to resist deformation when a force is applied. It is defined as the ratio of stress to strain within the elastic range of the material. In other words, it describes how much a material will stretch or compress under a given force.

The modulus of elasticity is important because it allows engineers to predict how materials will behave under different conditions, such as temperature changes, loading conditions, and other factors. It also helps to determine the maximum load a material can withstand before it starts to deform or break.

In detail, the modulus of elasticity is a fundamental property of a material that describes its ability to resist deformation when subjected to external forces. It is calculated by measuring the stress and strain of the material and using the equation E = σ/ε, where σ is stress and ε is strain.

The modulus of elasticity is important in many areas of engineering, such as structural design, materials science, and mechanics. It helps to ensure that structures and materials are designed and tested to withstand the loads and stresses they will be subjected to, and it provides a basis for comparing different materials and choosing the best one for a particular application.

In summary, the modulus of elasticity, E, is a material property that describes its stiffness and resistance to deformation. It is correctly determined using Hooke's Law and is crucial for predicting the mechanical behavior of materials when subjected to stress.

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Answer:

b. There will be more electrons emitted.

Explanation:

In photoelectric emission, the energy of the emitted electron is dependent on the frequency of the wave incident on the plate; but not the intensity. The rate of electron emission per unit time however depends on the intensity of the incident light. So increasing the intensity of the light at constant frequency will only affect the number of electrons emitted per unit time.

First, we need to do a type conversion. Because the types of the two given quantities are different. One is in minutes. The other is in hours. A vehicle that travels \(45\) kilometers in an hour travels how many meters in a second?

A vehicle that travels \(12.5\) meters in a second travels how many meters in \(20\) minutes?

Answer:

A light year is the distance ligh can travel in a year and an AU is the distance for light to travel from the sun to the earth.

Explanation:

The total momentum after collision is 143.466 kgm/s.

The momentum of a body is the product of the mass and the velocity of the body.

Assuming the right direction as positive and left direction as negative:

Momentum to the right = 46.3 * 5.24 = +242.612 kgm/s

Momentum to the left = 55.4 * -1.79 = -99.166 kgm/s

Total momentum before collision =  +242.612 kgm/s - 99.166 kgm/s

Total momentum before collision = 143.466 kgm/s

Thus, total momentum after collision is 143.466 kgm/s.

In conclusion, momentum is conserved in an isolated system of colliding bodies.

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The snake and rat both share the same ancestor population that had a quadrate bone, which was inherited from an ancestor population.

A homo-logous structure is a trait that may or not have the same function but has a common evolutionary origin.

A homo-logous structure can be used to trace the evolutionary relationships between species.

Conversely, an analogous structure has the same function but it does not reflect an evolutionary origin.

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Answer:

Explanation:

The oly way we can figure this out is if the boy is pulling the sled at a constant velocity. If not, we need a value for acceleration, and you don't have that here. If the boy is pulling the sled at a constant velocity, then the value for acceleration is 0, making this a really simple problem. I'm going with that, since there is no way to answer you otherwise. If velocity is not constant, please either repost the question or put it in the notes section under the question as it stands. If acceleration is 0, then

F - f = ma becomes

F - f = m(0) which is

F - f = 0 and

F = f which says that the applied force is the same as the frictional force. We need then to find the frictional force, which has an equation of

f = μ\(F_n\) where normal force is the same as the weight of the 2 girls. We will find that, then:

Each girl's mass is different so the normal force/weight equation is

w = (30.0)(9.8) + (40.0)(9.8) to get

w = 290 + 390 and

w = 680. Plug that into the frictional force equation:

f = (.120)(680) so

f = 82N

[Questoin 1] Volume

     "Charles's law is an experimental gas law that describes how gases tend to expand when heated." Expand = volume, so this answer is correct

[Question 2] b) move faster

     An increase in heat is an increase in energy, which is an increase in particle movement. This means that b is correct, because the particles will be moving faster

[Question 3] a) Celsius

     Charles' Law uses Celsius, so when doing Charles' Law problems you should use Celsius, aka °C

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

"element"= There are four basic sentence patterns based on sentence construction element

Answer:

1st one. Element

2nd one. Compound

Explanation:

Answer:

thermal decomposition reaction

Explanation:

The reaction 2KCIO₃ → 2KCI + 3O₂ is a decomposition reaction. It dissociates into its constituent elements.

Decomposition reactions involve the breakdown of a compound into two or more simpler substances. In this case, potassium chlorate (KCIO₃) decomposes into potassium chloride (KCI) and oxygen gas (O₂).

The balanced equation for the reaction is:

2KCIO₃ → 2KCI + 3O₂

This reaction is typically initiated by applying heat to KCIO₃, causing it to decompose into its constituent elements.

Therefore, The reaction 2KCIO₃ → 2KCI + 3O₂ is a decomposition reaction. It dissociates into its constituent elements.

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