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I’ll give brainlyist to the first correct response.

Answer:

initial velocity(u)=0

time(t)=3.5sec

acceleration (a)=9.8m/s²

final velocity (v)=?

Explanation:

we have

v=u+at=0+9.8×3.5=34.3m/s

Answer:

No

Explanation:

There are many units that are used to measure length of an object. For example centimeters, meters, millimeters etc.

There is a relationship between any of two units to measure lengths. If we want to convert some length from cm to m, it can be done as follows :

1 cm = 0.01 m

or

1 m = 100 cm

When we use this conversion, the calculation remains the same. Only the way to represent it will be different.

Hence, there is no lose of information when converted from centimeters to meters.

Answer:

A measuring cylinder contains 30 cm :))

Explanation: Hope this helps !!!!

Answer:

Voltage V = 117.65 volts

the voltage across the light bulb's filament is 117.65 V

Explanation:

The power of a light bulb can be expressed with respect to voltage and current flow.

Power = voltage × current

P = VI

Making Voltage V the subject of formula;

V = P/I

Given;

Power P = 4.0W

Current I = 0.034A

Substituting the given values;

V = 4/0.034

V = 117.65 volts

correct answer is option (B)

As a general rule of thumb, you should wait to exercise until three to four hours after eating a meal, and one to two hours after eating a snack.

How Soon Can You Workout After Eating?

Experts generally advise waiting 3 to 4 hours after a meal and 30 to 90 minutes after a snack. Your meals should be basic and simple to digest as you come closer to your workout. This is from the general rule of thumb.

A quick, readily digested snack should be planned for about an hour before to an intense workout, but if you are undertaking a workout that takes less energy and haven't eaten in four hours, you may be able to forgo the snack. Remember that every body is different, so what you require might not be the same as what your workout partner needs. That is the fundamental idea of IIN's bio-individuality in action.

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Answer:

D. 60-90 minutes

Explanation:

Just did it and koukladina stop deleting my answers

Phase states and abrupt changes in temperature. If the temperature it is exposed to changes drastically, a substance may go through a phase shift, changing from a solid to a gas or from a gas to a solid.

A solid can sublimate, or phase transition from a solid to a gas without ever existing as a liquid, if the temperature around it rises very quickly.

When bonds between molecules or atoms are created, disrupted, or both, chemical changes result. This implies that a substance with a particular set of properties such as melting point, colour, flavor, etc. becomes a substance with a different set of characteristics.

Physical alterations can often be reversed more easily than chemical changes. The condition in which a substance is in can be substantially influenced by its temperature. Matter might be in a solid, liquid, or gaseous form. Every material in the universe has a specific temperature threshold that, when crossed, causes a phase transition that alters the state of the substance. When matter absorbs or loses energy, its states change.

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Electrical inspector authority enforces the requirements set by the NEC.

The NEC specifies the minimum requirements for secure electrical installations.

The letters "UL" signify an electrical product satisfies the safety requirements of Underwriters Laboratories

Section 110.3 (B) Installation and Use of OSHA and NEC 1999. Equipment that is listed or labelled must be installed and used in accordance with any guidelines mentioned in the listing or labelling.

the word "shall" appears in a NEC reference, it means that it (must)(may) be done.

"The goal of this Code is the practical safeguarding of persons and property from hazards deriving from the usage of electricity," the NEC reads in 90.1(A). *

A collection of guidelines for the secure installation of electrical wiring in the US called the National Electrical Code (NEC) is revised on a regular basis. The NEC has been modified three times since it was first published in 1897.

In order to avoid fires and other electrical catastrophes, the NEC offers recommendations for electrical installation. For installations to be secure, legitimate, and compliant, electricians and contractors must be knowledgeable of the NEC when applicable. The National Fire Protection Organization, a private commercial association, is responsible for maintaining the codes.

The National Electrical Code (NEC) is a national designation, but it is not a federal statute. Local government either adopts NEC standards or writes and enforces its own electrical code in place of this.

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Answer:

The dynamo has a wheel that touches the back tyre. As the bicycle moves, the wheel turns a magnet inside a coil. This induces enough electricity to run the bicycle's lights. The faster the bicycle moves, the greater the induced voltage - and the brighter the lights.

Because of the bicycle's actions, the wheel turns a magnet internal a coil. This induces enough strength to run the bicycle's lighting fixtures. The faster the bicycle movements, the greater the caused voltage - and the brighter the lights.

A trendy dynamo creates an instantaneous modern-day (DC) – a one-directional waft of electrical rate. A bicycle dynamo creates an alternating current (AC), which reverses course from time to time.

A dynamo is a tool normally positioned inside the hub of a motorcycle's wheel that converts the energy generated by means of the wheel spinning to electric power. That energy is then used to run front and rear dynamo lights at the bike, offering constantly-on illumination without the want to change the lighting.

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Answer:

Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator

A conductor is a material which contains movable electric charges.

Answer:

The statement is TRUE! The precise or specific location of an electron cannot always be known or determined, regardless of what we do.

We can only assume it exists somewhere. It is also known as the "electron cloud model." It demonstrates that we can find electrons by considering "the probability of being in a certain location."

One of the theories that I believe explains this strange physics is the Principle of Heisenberg's Uncertainty. This equation describes electron wave-particle duality.

The peculiarities of the quantum realm have been repeatedly demonstrated. Knowing more means admitting that we know less.

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Astronauts could use Mars's natural resources to grow food. Mars's atmosphere consists mostly of carbon dioxide, an essential gas for plant survival, and Martian soil has the essential nutrients plants need to survive.

The first reason is that in the past humans didn't necessarily see the connections between the oceans and thus labelled them that way separating them into 5 oceans and the names stuck to this day.

Secondly, while all the oceans of the world constitute one large Ocean, people need some way to identify each part of it since it is easier to think when we have different categories instead of one large category.

Hope that helped!

Answer:

El resorte se comprime 0.38 m.

Explanation:

La distancia de compresión del resorte se puede calcular por conservación de la energía:

\( \Sigma E_{i} = \Sigma E_{f} \)

\( E_{p} = E_{e} \)

\( mgh = \frac{1}{2}kx^{2} \)   (1)

En donde:

\(E_{i}\) y \(E_{f}\): son las energías inciales y finales

\( E_{p}\): es la energía potencial gravitacional

\(E_{e}\): es la energía potencial elástica

m: es la masa = 1.50 kg

g: es la gravedad = 9.81 m/s²

h: es la altura

k: es la constante de fuerza = 320 N/m    

x: es la distancia de compresión

Dado que el objeto está 1.20 m sobre el resorte, entonces h es:

\( h = 1.20 + x \)  (2)

Entonces, introduciendo la ecuación (2) en (1) y resolviendo para x tenemos:

\( \frac{1}{2}kx^{2} - xmg - 1.20mg = 0 \)  

\( 160x^{2} - 14.72x - 17.66 = 0 \)  

Resolviendo la ecuación cuadrática anterior tenemos:

x₁ = -0.29 y x₂ = 0.38

Tomando el valor positivo entonces, el resorte se comprime 0.38 metros.

Espero que te sea de utilidad!  

Answer: 5

Explanation:

Answer:

calla gringo de mierda

Explanation:

The intensity of the sound waves at a distance of 2.50 m from the point source is 11.94.The intensity at a distance of 2.50 m from the point source, we can use the inverse square law for sound intensity. The inverse square law states that the intensity of a sound wave decreases as the square of the distance from the source increases.

First, let's calculate the intensity at the source. Since the source emits sound waves isotropically, the intensity at the source will be the same in all directions. Therefore, the intensity at the source is also 1.91.
Next, we can use the inverse square law to find the intensity at 2.50 m from the source. The formula for the inverse square law is:
I2 = I1 * (d1 / d2)^2
where I2 is the intensity at the second distance, I1 is the intensity at the first distance, d1 is the first distance, and d2 is the second distance.
Plugging in the values, we have:
I2 = 1.91 * (2.50 / 0)^2
I2 = 1.91 * (2.50^2)
I2 = 1.91 * 6.25
I2 = 11.94
Therefore, the intensity of the sound waves at a distance of 2.50 m from the point source is 11.94.

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The One strategy implemented to address the drug epidemic in Philadelphia is the creation of Comprehensive User Engagement Sites (CUES). These sites aim to tackle the widespread issue of drug addiction and related energy health concerns.

The CUES are safe spaces where individuals battling addiction can energy access various harm reduction services, such as clean syringes, medical support, and overdose prevention. These sites provide connections to addiction treatment programs and mental health services, helping people on their path to recovery. By offering safe and supervised spaces, CUES work to reduce public drug use, discarded syringes, and other related issues in the community. CUES also serve as educational hubs, raising awareness and providing information about the dangers of drug addiction and available resources for support. Lastly, these sites foster community engagement and collaboration, uniting various stakeholders in the fight against the drug epidemic. In summary, Comprehensive User Engagement Sites play a significant role in addressing the drug epidemic in Philadelphia. They provide harm reduction services, treatment programs, and community support, all while promoting a safer and healthier environment for the city's residents.

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Answer:420ms^-1

Conserving linear momentum (mv)=(MV)

Answer:

Vf = final velocity = 1.96 [m/s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f}^{2}=v_{o}^{2}-2*g*x\)

where:

Vf = final velocity [m/s]

Vo = initial velocity = 9.98 [m/s]

g = gravity acceleration = 9.81 [m/s²]

x = vertical distance [m]

\(v_{f}^{2}=(9.98)^{2}-2*9.81*4.88\\v_{f}^{2} = 99.6-95.74\\v_{f}=\sqrt{3.8544}\\v_{f}=1.96[m/s]\)

Note: The negative sign of the gravity acceleration means that the gravity acceleration is pointing in the opposite direction of the movement.

As a result, the first path would take 1 hour, 18 minutes to get you there.

Duration is the whole time that anything exists. A duration might be short, like the duration of a party, or it can be extensive, like the length of a lecture series. The time it takes to finish anything has come to be denoted by the term duration. Except for noon and midnight, use numerals for the times; separate the hours and minutes with a colon; and avoid using cyphers (double zeros) for complete hours.

It would take around 1 hour and 18 minutes to travel the first route, which is 70 miles long and travels at 55 mph. It would take around 1 hour and 21 minutes to travel the second route, which is 85 miles long and travels at a speed of 65 mph.

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If the fluid density at point 2 increases from 1,000 kg/m3 to 1,250 kg/m3, the speed at point 2 would likely decrease.

This is because an increase in fluid density usually leads to an increase in drag force, which opposes the motion of objects. Consequently, the object or fluid flow is expected to slow down. Increasing the fluid density from 1,000 kg/m3 to 1,250 kg/m3 at point 2 would likely result in a decrease in speed. Higher fluid density generally leads to increased drag force, opposing the motion and causing the object or fluid flow to slow down.

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Answer:

Explanation:

The correct option of the given question will be option © that is frequency changes.

According to the Doppler Effect, when source is moving towards the observer then the frequency increases and when the source is moving away from the observer then the frequency decreases, but the magnitude of the amplitude in both the cases will remain same. Whereas the speed of sound waves will remain constant as it was earlier. According to this effect, when there is a relative motion between the source and the observer then there will be the change in the frequency.

So, the correct answer will be that the frequency changes.

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Troposphere, stratosphere, mesosphere, thermosphere and exosphere.

Earth's atmosphere has five major layers.

From lowest to highest, layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.

a) What are the conditions in the troposphere?

The atmospheric temperature descends upward with a slope of ~10 K km−1 for dry air and ~7 K km−1 for wet air in troposphere.

The temperature of troposphere decreases with an increase in height.

B) What sort of temperatures would she experience in the stratosphere? What other layer is found within the stratosphere?

The temperature in the stratosphere ranges from- 60° F at the troposphere boundary to -5°F at the top.

The temperature increase is due to the ozone layer that absorbs ultraviolet light from solar radiation.

C)What sort of temperatures would she experience in the mesosphere?

The temperature in the mesosphere ranges from -2.5°C to -90°C

The temperature decreases because of a decrease in the absorption of penetrating solar radiation.

The atmosphere gets cooler with an increase in altitude because an increase in distance from the Earth's surface.

D)What sort of temperatures would she experience in the thermosphere? What other layer is found within the thermosphere?

4,500°F is the temperature of thermosphere.

Temperatures climb sharply in the lower thermosphere , then level off and hold fairly steady with increasing altitude above that height.

Temperatures in the upper thermosphere can range from about 500° C (932° F) to 2,000° C (3,632° F) or higher.

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Answer:

The measurement of an object's motion with respect to any other object that is moving or stationary is called Relative Motion.

Answer:

The resultant velocity is 86.1 mi/h.    

Explanation:

The law of cosines is given by:

\( c^{2} = a^{2} + b^{2} - 2abcos(\theta) \)

Where:

c: is the resultant velocity =?

a: is the velocity of the plane = 75.0 mi/h

b: is the velocity of the wind = 15.0 mi/h  

θ: is the angle between "a" and "b"                          

The angle between "a" and "b" can be found as follows:

\( \theta = 180.0 - 46.0 = 134.0 ^{\circ} \)

Now, by using the law of cosines we have:

\( c^{2} = (75.0)^{2} + (15.0)^{2} - 2*75.0*15.0*cos(134.0) = 7413.0 \)

\( c = 86.1 mi/h \)    

Therefore, the resultant velocity is 86.1 mi/h.    

The law of sines is:

\( \frac{a}{sin(\gamma)} = \frac{b}{sin(\alpha)} = \frac{c}{sin(\theta)} \)

Where:

γ: is the angle between "b" and "c"

α: is the angle between "a" and "c"

So, if we want to find "c" by using the law of sines, we need to know another angle besides θ (γ or α), and the statement does not give us.

I hope it helps you!