Is nitrogen a compound

Answer:

O The resistor decreases the current by transforming electrical energy into different types of energy

Explanation:

resistors convert elec energy to heat

Answer:

D

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much love! <33

Answer:

the answer is 250

Explanation: took the test

Magnitude of the tension in the upper rope = 55.4 N

Given,

Mass of the object (m) = 3.90Kg

Tension in the lower string (T₂) = 17.2 N

Let Tension in the upper string (T₁) = T₁

The object is suspended at rest, so all forces on it are balanced. This gives us the equation :

                              T₁ = T₂ + W

Where W = mg (weight of the body)

T₁ = 17.2 N + 3.90 × 9.81 m/s²

   =  17.2 N + 38.259 N

  =  55.4 N

There the magnitude of tension in the upper rope is 55.4N.

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To answer this question, you need to understand the law of conservation of energy. Essentially, the law states that energy cannot be created or destroyed; it is always conserved.

Knowing this law, how can we answer this question? Well, let's look at what the question tells us. We know that Blackie was initially at the top of a refrigerator before rolling over and falling to the ground. At ground level, he only has Kinetic energy when he lands. Since we know that he started at the top of the fridge, we know that Blackie started off with potential gravitational energy.

That would make sense, right? Written out as an equation, it'd be:

\(U_{g}\) = \(K_{E}\)

This follows the law of conservation of energy, as all the potential gravitational energy is converted into Kinetic energy.

Now, we know what energies are converted. What can we do with it? Recall the equation of potential gravitational energy:

\(U_{g}\) = \(F_{g}\)∆H

\(U_{g}\) = mg∆H

Do you see it now? ∆H is the distance that Blackie falls, and since Blackie jumps from the fridge to the ground, ∆H must be the height of the fridge!

Let's start solving for ∆H:

\(U_{g}\) = \(K_{E}\)

Substitute potential gravitational energy with our equation:

mg∆H = \(K_{E}\)

We were given the value of Kinetic Energy:

mg∆H = 90

Isolate ∆H by dividing both sides by mg:

∆H = \(\frac{90}{mg}\)

Input values for 'm' and 'g' (m is the mass of Blackie and g is Earth's acceleration)

∆H = \(\frac{90}{6*9.80}\)

∆H = \(\frac{90}{58.8}\)

∆H = 1.53

The refrigerator is 1.53 meters tall.

And that's it! Let me know if you need me to explain anything I did here.

- breezyツ

Quasars may result from the very energetic merging of gas spiraling at high velocity in condensing galaxies.

A quasar forms can be regarded as one that the material that falls into the accretion disc  which is seen in  supermassive black hole at the centre of a galaxy.

It should be noted that it is an extremely luminous active galactic nucleus  which is been powered by a supermassive black hole,  having a large  mass, hence Quasars may result from the very energetic merging of gas spiraling at high velocity in condensing galaxies.

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The principle responsible for light spreading as it passes through a narrow slit is diffraction hence correct choice is c) diffraction.

The act of bending light around corners such that it spreads out and illuminates regions where a shadow is anticipated is known as diffraction of light. In general, since both occur simultaneously, it is challenging to distinguish between diffraction and interference.

Diffraction occurs when a wave, such as light, encounters an obstacle or a slit and bends around it, causing the wave to spread out. In the case of light passing through a narrow slit, this spreading results in an interference pattern that can be observed on a screen placed behind the slit.

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Speed = (rate of acceleration) x (time)

Accelerating at 5.5 m/s² for 4 seconds, the car gains (5.5 x 4) = 22 m/s of speed.

If it's actually traveling at 25 m/s at the end of that time, then it must have already been moving at (25 - 22) = 3 m/s when the 4 seconds started.

Isooctane is the pure substance, while petrol is a mixture of different compounds.

Based on the given information, isooctane and petrol are being compared in terms of their boiling points. Isooctane, also known as 2,2,4-trimethylpentane, is a pure substance.

It is a hydrocarbon compound and is one of the primary components of gasoline (petrol).

Being a specific compound with a well-defined molecular structure, isooctane has a fixed boiling point, which in this case is stated as 99°C.

On the other hand, petrol refers to a mixture of various hydrocarbons, which can vary in composition depending on its source and the refining processes it undergoes.

Petrol is a complex mixture containing multiple compounds with different boiling points. The given range of boiling points, between 45°C and 95°C, suggests that petrol is composed of several components that vaporize at different temperatures.

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The properties of waves are: wavelength, time period.

Sound wave is considered a mechanical wave because it requires medium to travel.

A mechanical wave is one whose energy cannot be transmitted via a vacuum. To transfer their energy from one place to another, mechanical waves need a medium.

A mechanical wave is something like a sound wave. A vacuum can not be traversed by sound waves.

Units of time and space can be used to measure the fundamental characteristics of waves. The length between wave crests, or wavelength (L), and the time it takes a wave to pass a fixed point, or period (T), are two characteristics that can be measured directly.

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Answer:

Saturn's rings are thought to be pieces of comets, asteroids or shattered moons that broke up before they reached the planet, they are made of billions of small chunks of ice and rock coated with another material such as dust.

Explanation:

They are brought in by Saturn's powerful gravity :)

Answer:

Compound 'A' C5H12 does not react with phenyl hydrazine. Oxidation of 'A' with K2Cr2o7,/H" gives B' (c5H10o). Compound 'B' reacts with phenyl hydrazine but does not give Tollen's test. The

Answer:

i am sorry i have no idea

Explanation:

The impulse on each individual cart is not zero, as each cart experiences an equal and opposite force from the explosion, resulting in a change in momentum for each cart. Therefore, there is a non-zero impulse on each cart, but the impulse on the two-cart system is zero.

What is Impulse?

Impulse is a quantity that measures the change in momentum of an object that occurs as a result of a force acting on it for a certain period of time. It is equal to the force multiplied by the time interval over which it acts. The formula for impulse is:

Impulse = Force x Time

Impulse is a vector quantity that has the same direction as the force that is applied. It can be positive or negative, depending on the direction of the force and the resulting change in momentum of the object.

In this case, the explosion between the two carts causes an equal and opposite force to be applied to each cart, resulting in a change in momentum for each cart.

Since the explosion occurs between the two carts, the two-cart system can be considered as a closed system. Therefore, by the law of conservation of momentum, the total momentum of the system before and after the explosion must be conserved. This means that the impulse on the two-cart system is zero.

However, the impulse on each individual cart is not zero, as each cart experiences an equal and opposite force from the explosion, resulting in a change in momentum for each cart. Therefore, there is a non-zero impulse on each cart, but the impulse on the two-cart system is zero.

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The voltage drop across the 18 kΩ resistor is 90 volts. This means that when a current of 5 mA flows through an 18 kΩ resistor, there is a potential difference of 90 volts across the resistor.

To calculate the voltage drop across a resistor, Ohm's Law can be applied. Ohm's Law states that the voltage (V) across a resistor is equal to the product of the current (I) flowing through it and the resistance (R) of the resistor. The formula for Ohm's Law is V = I * R.

Given:

Current (I) = 5 mA = 5 * 10^(-3) A

Resistance (R) = 18 kΩ = 18 * 10^(3) Ω

Using Ohm's Law, we can calculate the voltage drop (V):

V = I * R

= (5 * 10^(-3) A) * (18 * 10^(3) Ω)

= 90 V

Therefore, the voltage drop across the 18 kΩ resistor is 90 volts. This means that when a current of 5 mA flows through an 18 kΩ resistor, there is a potential difference of 90 volts across the resistor.

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Answer:

The kinetic energy of a body is the energy that it possessed due to its motion. Kinetic energy can be defined as the work needed to accelerate an object of a given mass from rest to its stated velocity. Kinetic energy depends upon the velocity and the mass of the body.

Answer:

To describe motion accurately and completely, a frame of reference is necessary. frame of reference ( or reference frame) consists of an abstract coordinate system and the set of physical reference points that uniquely fix ( locate and orient ) the coordinate system and standardize measurements within that frame.

Explanation:

The different observations occur because the two observers are in different frames of reference. A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.

We can solve this problem using the conservation of energy principle, which states that the total mechanical energy (potential energy + kinetic energy) of a system remains constant if no external work is done on the system.

At the top of the hill, the car has only potential energy, given by:

PE = mgh

where m is the mass of the car, g is the acceleration due to gravity, and h is the height of the hill.

PE = (1000 kg) x (9.81 m/s^2) x (200 m) = 1,962,000 J

At the base of the hill, the car has only kinetic energy, given by:

KE = (1/2)mv^2

where v is the velocity of the car.

Using the conservation of energy principle, we can equate the potential energy at the top of the hill to the kinetic energy at the base of the hill:

PE = KE

mgh = (1/2)mv^2

Canceling the mass on both sides, we get:

gh = (1/2)v^2

Solving for v, we get:

v = sqrt(2gh)

Substituting the given values, we get:

v = sqrt(2 x 9.81 m/s^2 x 200 m) = 44.3 m/s

Therefore, the velocity of the car at the base of the hill is approximately 44.3 m/s.

The magnitude of the electron's acceleration is 3.2 × 10¹⁵ m/s².The magnitude of the electron's acceleration can be determined using the formula for force acting on a charge in an electric field F = q E, where F is force, q is charge, and E is the electric field strength.

Additionally, the formula for acceleration can be used to derive the expression for acceleration;a = F / m,where a is acceleration, F is force, and m is mass.Now, if we substitute qE for F, we can get the expression for acceleration;a = (qE) / m.In this problem, we know that the voltage applied across the copper wire, V, is 18 V. We also know that the length of the wire, L, is 14 cm. To determine the electric field strength E, we can use the formula for electric field strength E = V / L. Substituting

the known values into the formula, we have E = V / L = 18 V / 0.14 m = 128.57 V/m.Using the given values of the mass of an electron, m, and the fundamental charge, q, we get;q = 1.602 × 10^-19 C,m = 9.109 × 10^-31 kgSubstituting the values into the expression for acceleration a = (qE) / m= [(1.602 × 10^-19 C) (128.57 V/m)] / (9.109 × 10^-31 kg)= 2.29 × 10^11 m/s².The magnitude of the electron's acceleration is;a = 2.29 × 10^11 m/s² = 3.2 × 10¹⁵ m/s² (to 2 sig figs).Hence, the main answer is: The magnitude of the electron's acceleration is 3.2 × 10¹⁵ m/s².

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The displacement of Curiosity is 2.334 m

The given parameter:

maximum speed of Curiosity, v = 0.14 km/hr

time of motion of Curiosity = 60 s

To find:

The displacement of Curiosity is calculated as follows;

The displacement of Curiosity = speed x time

The displacement of Curiosity = 0.0389 m/s x 60 s

The displacement of Curiosity = 2.334 m

Thus, the displacement of Curiosity is 2.334 m

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The bodies of Columbia found in Lake Nacogdoches and the Toledo Bend Reservoir.

All of the astronauts' remains were recovered in East Texas. “Every time remains were recovered, they would pause and everything and have a moment of silence,” said Orwig. Two decades later, pieces of the shuttle are still being found, a reminder of this tragic historical event that took place in the Texas sky.

The remains of all seven astronauts were recovered, despite the obstacles of terrain and the scope of the search. Searchers combed through pine forests, hundreds of thousands of acres of underbrush, and boggy areas. Parts of the shuttle were found in Lake Nacogdoches and the Toledo Bend Reservoir.

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Mars has a thin atmosphere unlike Venus hence their surface temperature varies despite both Mars and Venus having atmospheres with mostly Carbon Dioxide

Venus and Mars are the solar system's planets, and their temperatures differ. Mars has a thin atmosphere that cannot withstand much heat.

Mars is the fourth planet in the solar system, also known as the red planet . It contains less oxygen gas than carbon dioxide. It is has a thin atmosphere and is made up of various gases.

Unlike Venus, Mars' thin atmosphere cannot retain heat and instead radiates it back into space. Venus has a thick atmosphere. It traps heat and raises the surface temperature. Mars' atmospheric particles cannot store energy and thus vary in temperature.

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Answer:

Explanation: a people's whole way of life

Earth returns most of the energy it receives from the sun back to space in the form of infrared light emitted by the surface and atmosphere. This process is called radiation.

The temperature of Earth's surface and atmosphere is regulated by the balance between incoming solar radiation and outgoing infrared radiation. If this balance is disrupted, the temperature of Earth can change. The other options listed, such as visible light emitted or reflected by the surface and atmosphere, and ultraviolet light reflected by the surface, are not the primary forms of energy that Earth returns to space. In summary, Earth's temperature remains steady because it radiates most of the energy it receives from the sun back into space in the form of infrared radiation.

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The acceleration of the plate will not remain constant. As the plate begins to move due to the water force, the force of the water jet becomes less effective, due to the increasing distance between the nozzle and the plate.

As the plate continues to move away from the nozzle, the force of the water jet will decrease, resulting in a decrease in the plate's acceleration. Moreover, the force of the water jet also decreases due to friction with the surrounding air, further decreasing the plate's acceleration.

As a result, the acceleration of the plate will not remain constant, but will instead decrease as the plate moves away from the nozzle.

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Answer:

A example of a scientific way of thinking is making observations, forming questions, making hypotheses, doing an experiment, analyzing the data, and forming a conclusion.

Answer:

When current is reduces to 0.3 A resistance of the bulb would be 400 ohms.

Explanation:

We know Power (P)  = I(Current). V(Voltage)

Rearranging this equation we get,

I = P/ V

We have P = 75 W and V = 120 V

Thus, 75 W / 120 V

= 0.625 A

Using Ohm's law to find the resistance that would be needed to reduce the current to 0.3 A:

R = V / I

= 120 V / 0.3 A

= 400 ohms

Therefore, a resistance of 400 ohms will be needed to reduce the current to 0.3 A.

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Answer:

False.

Explanation:

Mass is how much space an object takes up, while weight is how light or heavy an object is.

Answer:

2 per s

Explanation:

divid 40 and 20 it gives you = 2

Answer:

2m in 4s

Explanation: