An inclined plane reduces the amount of force needed to move an object by:.

Answer:

Proton

Explanation:

Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.

Answer:

Explanation:

Projectile Motion. Projectile motion is different than free fall: it involves two dimensions instead of one. ... Balls traveling in two dimensions, only one of which experiences acceleration, require two sets of equations: one set for the x-direction and the other for the y-direction.

To boost the force 's magnitude by a factor of 1.84, Q1 must be raised by 4.42.

The amount of the electric force between two point charges can be estimated as follows since it is inversely proportional to their squared separation and directly proportional to the product of their charges:

f = k ×q1× q2 / r2

q1 and q2 are the magnitudes of the charges, r is the distance between them, and k is the Coulomb constant.

The first thing we need to do is figure out the new force's magnitude when q2 is multiplied by 0.4112 and the distance is doubled:

f' = k ×q1× 0.412× q2 / (2 r)²

f' / f = 1.84

1.84 k ×q1× 0.412× q2 = 2× r²/(k ×q1× q2 / r2)

To boost the force's magnitude by a factor of 1.84, Q1 must be raised by 4.42.

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Answer: Substance 3 is liquid at room temperature

Explanation: The common room temperature is assumed to be 20-22°C, we need to find the substance that will be in liquid state in that temperature.

For Substance 1, the boiling point is -195.975°C, and hence at room temperature, it would be in vapor phase and all liquid would have turned to gas.

For Substance 2, the boiling point is 3.85°C, and hence at room temperature, it would be in vapor phase and all liquid would have turned to gas in this case too.

For Substance 3, the boiling point is 77.85°C, and melting point is -108.15°C, hence at room temperature, it would be in liquid state.

For Substance 4, the melting point itself is 1800°C, due to which at room temperature it would be in solid state.

Because they sit high up, truck drivers have excellent visibility (option c) forward.

The statement suggests that truck drivers have a good view of the road and surroundings in the direction they are moving, which is forward.

The high position of the driver's seat in trucks provides an advantageous vantage point, allowing them to see the road ahead clearly and have a better perspective of the traffic conditions.

Sitting higher than most vehicles on the road, truck drivers benefit from an elevated position that enhances their field of vision.

This elevated viewpoint allows them to have a broader and clearer view of the road, enabling them to anticipate and react to potential hazards or obstacles in advance.

The improved visibility from the elevated seat position helps truck drivers make informed decisions while driving and enhances overall safety.

In conclusion, the phrase "truck drivers have excellent visibility because they sit high up" suggests that the excellent visibility is primarily in the forward direction, providing them with a clear view of the road and surroundings ahead.

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Answer: 2.4 rev

Explanation: when using I=mr^2, you plug in your mass and multiply it by radius squared and you will get your angular speed.

The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

The converse of a statement switches the subject and the predicate and negates both. In the original statement, the subject is "pilots" and the predicate is "mechanics."

The original statement states that there is no overlap between pilots and mechanics. In the converse statement, the subject becomes "mechanics" and the predicate becomes "pilots," and it still states that there is no overlap between the two groups.

Therefore, The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

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yes it is any plant is apart of reproduction

Answer:If the object's speed increases.

Explanation:

If the object's speed increases, then its kinetic energy will increase. If the kinetic energy increases, the change in kinetic energy will be positive.

The  work on an object increases its energy, that's how, its kinetic energy and  potential energy increases.

The definition of kinetic energy in Physics is as follows: Kinetic energy of an object is the measure of the work an object can do due to its motion. Kinetic energy is a scalar quantity that can only be characterized by magnitude.

Potential energy is stored energy that is affected by the relative positions of various pieces of a system. When a spring is compressed or stretched, its potential energy increases. A steel ball has higher potential energy when raised above ground than when it falls to Earth. It can do more work in the elevated position.

Potential energy is a property of a system, not an individual substance or particle; for example, the system made of Earth and the elevated ball has more potential energy as the two are separated.

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The correct answer is B. 2 statement is correct,  Lowering the power consumption helps reducing the heat generation.

Statement (2) is correct: Lowering the power consumption helps reduce heat generation. When a device or system consumes less power, it generates less heat as a byproduct. This is beneficial for thermal management, as excessive heat generation can lead to performance issues, reduced efficiency, and potential damage to components.

Statements (1) and (3) are incorrect:

- Lowering the power consumption does not directly extend battery life.

- Lowering the energy consumption does not directly reduce the electricity bill. However, lowering energy consumption can indirectly contribute to reducing the electricity bill by reducing the total energy usage.

Statement (4) is incorrect:

- A CPU with 10% utilization does not necessarily consume 33% of the peak power. Power consumption is not directly proportional to CPU utilization. In summary, only statement (2) is correct, so the answer is B.

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Answer:

Density is 8 g/cm³

Explanation:

\(density = \frac{mass}{volume} \\ \)

mass » 80 g

volume » 10 cm³

\(density = \frac{80 \: g}{10 \: {cm}^{3} } \\ \\ = 8 \: {gcm}^{ - 3} \)

Answer:

mass=80

volume=10

density=mass/volume

which is 80/10

so the density is equals to 10.

Answer: 2

Explanation:

By using Hubble's constant H₀, the estimated age of the universe would be 5,262,601,653 years.

As we know that the age of the universe is something near to the time the galaxies needed to reach their current distance:

T = D/V

where T is the time the galaxies needed, D is distance and V is speed.

By using Hubble's law we can use the equation

V = H₀*D

where H₀ is Hubble's constant

By combining these 2 equations, we get

T = D/(H₀*D) = 1/H₀ .............(A)

In conclusion, the age of the universe is something near the inverse of Hubble's constant.

From the question above, we know that:

H₀ = 57 km/s/Mly

By using equation A we get

T = 1/(57 km/s*Mly)

T = (1/57)  s*Mly/km

Convert 1 million light-years to km by (1 ly = 9.461*10^12 km)

T = (1/57) s*Mly/km

T = (1/57)*9.461*10^18 s

T = 1.6598*10^17 s

Convert to years by (1 year = 3.154*10^7 s)

T = 1.6598*10^17 s

T = (1.6598*10^17 s/3.154*10^7 s)* 1 year

T = 5,262,601,653 years.

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Answer:

if not mistaken its b

Answer:

Since the two colliding objects travel together in the same direction after the collision, the total momentum is simply the total mass of the objects multiplied by their velocity.

Explanation:

Answer:

vega the first one

pb

p

Explanation:

Answer:

It reveals that light is a wave

Explanation:

Diffraction is the property of a wave in which there is a bending of the wave about the corners of an obstacle or aperture into the geometrical shadow of the obstacle or aperture.

This simply implies that a wave bends or spreads out when it passes through openings. Since the light diffracts through small slits and diffraction has been shown to occur in water waves and sound waves, this property of diffraction can only be characteristic of a wave and thus, this evidence reveals that light is a wave.

Answer:

It shows that light can travel in different wavelengths.

Explanation:

Light is similar to a wave in the way that it travels in a straight line, but when it is passing through the slits, it diffracts due to this difference. Therefore, light refracts in the same way as a wave would, and it is a mode of transferring energy. The light travels in a way similar to a wave

The acceleration due to gravity in Chicago is \(9.803 m/s^2\).

Let us assume that the acceleration due to gravity in Chicago is \(g\) \(m/s^2\).

It is given that,

The length of the second pendulum is \(l=0.9933 m\).

It is known that,

The time period of a second pendulum is \(T=2s\).

The time period of a simple pendulum, \(T=2\pi\sqrt{\frac{l}{g}}\).

\(\Rightarrow (2)=2\pi \sqrt{\frac{0.9933}{g}}\)

\(\Rightarrow \frac{2}{2\pi}=\sqrt{\frac{0.9933}{g}}\)

\(\Rightarrow \frac{0.9933}{g}=(\frac{1}{\pi})^2\)

\(\Rightarrow g=0.9933\times(\pi)^2\)

\(\Rightarrow g=9.803 m/s^2\)

Hence, the acceleration due to gravity in Chicago is \(9.803 m/s^2\).

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The electric potential at point b experienced by the charge cab be determined using the formulas given.

The electric potential of a point charge is the work done in moving the charge from infinity to certain point against the electric field.

V = Ed

V = (F/q)d

V = (Fd)/q

where;

Thus, the electric potential at point b experienced by the charge cab be determined using the formulas given.

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light bends towards the normal when passing from air to water.

Explanation:

when Light passes from air to water It gets refracted and bend towards normal and if it passes from water to air it bends away from normal. This is because of the difference in density of the medium. Light when passing through higher density to lower bends away from normal and on passing through lower density to higher bends towards normal.

in general, some of the rays of light will reflect from the surface of water but other will pass through the water. The normal is the perpendicular line drawn on the surface at the exact point of incident.

Answer:

a) Answer: 0.16331 m/s

b) Answer: 8522.66 joules

Explanation:

The final speed is  0.1633 m/s.

When the freight car receives this scrap metal, 7915.72 Joule kinetic energy is lost.

A body has momentum while it is moving, according to our understanding. It is said that a body's momentum is equal to the sum of its mass and speed. A body's direction is important when discussing momentum. Its direction belongs to the body's direction of motion.

(a) Given parameter:

Mass of the railroad car, M = 2900 Kg.

Mass of the scrap metal, m= 11750 Kg.

Initial speed of the car, u = 0.0825 m/s.

Initial speed of the scrap metal = 0 m/s.

Final speed of the system, v = ?

Then, initial momentum of the  system = initial momentum of the car +  initial momentum of the scrap metal .

= (29000×0.825 + 117500×0) kg.m/s.

= 23925 kg.m/s.

Final momentum of the system = total mass of the system× final speed

= (29000 + 117500)× v kg.m/s

= 146500v kg.m/s.

Hence, from principle of conservation of momentum,

initial momentum of the  system = Final momentum of the system

⇒ 23925 = 146500v

⇒ v = 0.1633 m/s.

The final speed of the  loaded freight car is 0.1633 m/s.

(b) Lost in kinetic energy = initial kinetic energy of the car - final kinetic energy of the loaded car.

= 1/2*29000*0.825² -1/2*(29000 + 117500)* 0.1633² Joule.

= 7915.72 Joule.

Hence, 7915.72 Joule kinetic energy is lost in this process.

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A Gardner crosses the plant with red and white flowers. Each is pure of its traits. If the gene of the flower shows incomplete dominance the dominant flow gene will show the color.

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Answer:

When gamma rays pass through the human body, they ionize the tissue.  gamma ray ionization can affect healthy cells. When high levels of gamma rays bombard a body, a resulting dangerous ionization of tissue can cause skin cancer.

Explanation:

Answer:

Explanation:

Greetings!!!

Mass(m)= 1900kg

Acceleration (a)= 6.0m/s²

Force (F)= ?

Firstly, recall Newton's second law.

Substitute known variables into the equation

Solve for Force

If you have any questions tag me on comments

Hope it helps!!!

Answer:

displacement

Explanation:

Hookes Law describes the elastic properties of materials only in the range in which the force and displacement are proportional (displacement = change in length).

When a particular heat engine has a mechanical power output of 5.00 kw and an efficiency of 25.0%. the engine expels 8000 j of exhaust energy in each cycle

a) The energy taken in during each cycle is 20.00 kW.

b) The time interval for each cycle is 1.60 seconds.

(a) To find the energy taken in during each cycle, we can use the formula for the efficiency of a heat engine:

efficiency = (mechanical power output) / (heat input)

Rearranging this equation, we get:

heat input = (mechanical power output) / efficiency

Substituting the given values, we get:

heat input = (5.00 kW) / 0.25 = 20.00 kW

(b) To find the time interval for each cycle, we can use the formula for mechanical power:

mechanical power output = work done / time interval

Since the engine expels 8000 J of exhaust energy in each cycle, this represents the work done by the engine. Therefore, we can rearrange the above equation to solve for the time interval:

time interval = work done / mechanical power output

Substituting the given values, we get:

time interval = 8000 J / (5.00 kW) = 1.60 s

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B

Explanation:

yeah but I don't know what

Answer:

The final answer is \(6.1 BTU = 6.5621*103 KJ\)

Explanation:

\(1 BTU= 252 cal\\1 BTU =252 × 4.2 kJ\\6.1 BTU = 252 × 6.1×4.2 kJ = 6562.08 kJ\\ = 6.5621 × 103 kJ\\\)

Hence, \(6.1 BTU = 6.5621 × 103 kJ\)