hhhhhhhhhhhhheeeeeeeeeeeeeellllllllllpppppppppppp ppppppplllllllllzzzzzzzz hhhhhhhheeeeeeeellllllllppppppp !!!!!!!!!!!!!!!!!! :)))))))

Velocity is simply defined as the rate of change of displacement per unit time. Mathematically, it can be expressed as

Velocity = displacement / time

For example: A car travels 400 m due north in 40 s. What is the velocity of the car.

From the question given above, we can obtain the velocity as follow:

Velocity = displacement / time

Velocity = 400 / 40

Velocity = 10 m/s

Learn more about velocity:

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Answer:

12.5 hz

Explanation:

[tex] \huge\boxed{ \tt option \: a}[/tex]

Yes. The paint can take in energy from the light, causing it to be damaged.

the answer is

A , Yes. The paint can take in energy from the light, causing it to be damaged

Answer:

– 2.5 m/s²

Explanation:

We have,

• Initial velocity, u = 180 km/h = 50 m/s

• Final velocity, v = 0 m/s (it stops)

• Time taken, t = 20 seconds

We have to find acceleration, a.

[tex]\longrightarrow[/tex] a = (v ― u)/t

[tex]\longrightarrow[/tex] a = (0 – 50)/20 m/s²

[tex]\longrightarrow[/tex] a = –50/20 m/s²

[tex]\longrightarrow[/tex] a = – 5/2 m/s²

[tex]\longrightarrow[/tex] a = – 2.5 m/s² (Velocity is decreasing) [Answer]

Answer:

Explanation: all of them have made sentence structure (grammar point view) and from the physical aspect.

The force acting on a moving charge is known as the magnetic force. The force acting on the charge will be 3.75 N.

Magnetic fields only exert a force on a moving electric charge. A moving charge generates a magnetic field. With an increase in charge and magnetic field strength, this force rises.

when charges have higher velocities, the force is stronger. However, the magnetic force is always perpendicular to the velocity.

Mathematically the force exerted on the charge will be

F=qvBsinα

F= force acting on the charge= 7.5 ×10⁻²

v = velocity of charge=2.5 ×10⁴

q = charge=?

B= 8.1 ×10⁻²

F=qvBsinα

[tex]\rm{q= \frac{F}{vBsina}}[/tex]

[tex]\rm{q= \frac{7.5\times 10^-2}{2.4\times 10^-2 \times 8.1\times 10^-2 sin25^0}}[/tex]

q = [tex]8.8 \times 10^ {-5}\rm C[/tex]

Hence the value of the charge will be [tex]8.8 \times 10^ {-5}\rm C[/tex].

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Hooke's Law

[tex]\tt F=k.\Delta x[/tex]

k = spring constant

x = stretch

F = force

Input the value

[tex]\tt \Delta x=\dfrac{F}{k}=\dfrac{25}{8}=3.125\rightarrow 3.13\:m[/tex]

Answer:Korotkoff Sounds. -tapping sounds created by turbulent blood flow in arm. -pressure is slowly being released from cuff, so systolic pressure is above that of the cuff, but diastolic is still below, so the artery opens in systole and collapses in diastole.

Explanation:

Answer: becaue they can burn your body part it i important to tudy chemicals in cloed container

Explanation:

Answer:

There are plenty of reasons why. For some reactions, the system needs to be closed to avoid any alterations to the reaction. It can also be for protection, repeatability, and consistency.

Kepler's third law is used to determine the relationship between the orbital period of a planet and the radius of the planet.

The distance of the earth from the sun is [tex]1.50 \times 10^{11}\;\rm m[/tex].

Kepler's Third Law states that the square of the orbital period of a planet is directly proportional to the cube of the radius of their orbits. It means that the period for a planet to orbit the Sun increases rapidly with the radius of its orbit.

[tex]T^2 \propto R^3[/tex]

Given that Mars’s orbital period T is 687 days, and Mars’s distance from the Sun R is 2.279 × 10^11 m.

By using Kepler's third law, this can be written as,

[tex]T^2 \propto R^3[/tex]

[tex]T^2 = kR^3[/tex]

Substituting the values, we get the value of constant k for mars.

[tex]687^2 = k\times (2.279 \times 10^{11})^3[/tex]

[tex]k = 3.92 \times 10^{-29}[/tex]

The value of constant k is the same for Earth as well, also we know that the orbital period for Earth is 365 days. So the R is calculated as given below.

[tex]365^3 = 3.92\times 10^{-29} R^3[/tex]

[tex]R^3 = 3.39 \times 10^{33}[/tex]

[tex]R= 1.50 \times 10^{11}\;\rm m[/tex]

Hence we can conclude that the distance of the earth from the sun is [tex]1.50 \times 10^{11}\;\rm m[/tex].

To know more about Kepler's third law, follow the link given below.

https://brainly.com/question/7783290.

Answer:

any two difference between negative and positive charge

➢The matter is positively charged if it contains more protons than electrons, and it is negatively charged if it contains more electrons than protons.

Explanation:

I hope it will help you.....

[tex]kai6417[/tex]

#carryonlearning

So, the amount of energy associated with a photon that has a frequency of 1000 Hz is [tex] \boxed{\sf{6.626 \times 10^{-31} \: J}} [/tex]

Hi ! Here, I will help you to explain the material about photon energy. Photon energy is the energy carried by electromagnetic waves as they propagate. Photon energy is generally affected on frequency (the higher the frequency value, the energy will greater too) or wavelengths (the higher value of the wavelengths, the energy will smaller). So, based on the two concepts above, this is the following equation :

By the Frequency

[tex] \boxed{\sf{\bold{E = h \times f}}} [/tex]

By the Wavelengths

[tex] \boxed{\sf{\bold{E = h \times \frac{c}{\lambda}}}} [/tex]

With the following condition :

We know that :

What was asked :

Step by step :

[tex] \sf{E = h \times f} [/tex]

[tex] \sf{E = 6.626 \times 10^{-34} \times 10^3} [/tex]

[tex] \boxed{\sf{E = 6.626 \times 10^{-31} \: J}} [/tex]

So, the amount of energy associated with a photon that has a frequency of 1000 Hz is [tex] \sf{6.626 \times 10^{-31} \: J} [/tex]

Julia has to increase the no of loops in the coil in order to increase the generation of current.

A solenoid is an electromagnet formed by a helical coil of wire. which generates a magnetic field when an electric current is passed through the coil.

According to  Faraday's law of electromagnetic induction, the rate of change of magnetic flux linked with the coil is responsible for generating emf in the coil resulting in the vof the amount of current.

magnetic flux is defined as

Ф=NBA

[tex]EMF = \frac{d\phi}{dt} \\\\EMF = \frac{d(NBA)}{dt} \\\\[/tex]

[tex]EMF =NA \frac{d(B)}{dt} \\\\[/tex]

EMF is directly proportional to the amount of current. so that in order to increase the amount of current emf should be increasing and Emf is increased by the increasing no of the loop in the coil.

Hence Julia has to increase the no of loops in the coil in order to increase the generation of current.

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Answer:

BBBBBBBBB

Explanation:

Answer:

According to the Given Statement

Canon fires directly upwarda at 150m/s ( Initial speed, u )

Acceleration due to gravity is 10m/s²

Since Cannon ball reach it maximum height so its final velocity v will be 0 m/s .

Using Kinematic Equation

On substituting the value we get

➥ 0 = 150 + 10 × t

➥ 150 = 10 × t

➥ 150/10 = t

➥ 15 s = t

So, it will take 15 seconds .

Answer:

maximum height reached: 15 s

Explanation:

using the formula: maximum height reached = [(sin(θ) * speed)/ gravity]

Here speed is 150m/s and gravity is 10 m/s² and as it does directly upwards, it has an angle of 90°

using the formula:

maximum height reached = [(sin(90) * 150)/ 10] = 15 s

Answer:

timothy 50

jovanniel 80

PJ 100

Explanation:

tras me

Answer:

Yes because while you slide down the slide you are obviously going to wear clothes and the cotton on your clothes rubbing up against that rubber from the slides, are gonna react by sending a static electricity shock feeling  to your body  

Explanation:

Answer:

The same effect can be observed on other non-conductive, polymer surfaces like the mesh of a trampoline. If it is sitting in the sun for a while, you can feel the static charge on it when you approach it, even if no one has been on it recently (so it's not just from friction of users' clothing).

Explanation:

There are always stray electrons flying around, everywhere. The plastic of the slides (and other, non-conductive materials) tend to build up spare electrons just from the air currents moving over them, so its not really the sun that makes them collect charge. As the air around the plastic heats up, it loses its density and humidity, meaning that electrons that were sitting on or close to the plastic get stuck there. Air flowing over the plastic deposit more electrons. As the air cools after the sun goes down (or if it gets cloudy enough), the air around the plastic becomes more dense and can hold more humidity, which means that the electrons can be carried away by stray ions faster, and the amount of excess charge decreases.

Answer:

C. It can increase the chance of asthma attacks

Explanation:

Air resistance is negligible

Apply third equation of kinematics

[tex]\\ \tt\longmapsto v^2=u^2+2gs[/tex]

[tex]\\ \tt\longmapsto v^2=2(10)381[/tex]

[tex]\\ \tt\longmapsto v^2=7620[/tex]

[tex]\\ \tt\longmapsto v=87.29ms^{-1}[/tex]

Answer:

According to the Given Statement

Penny is dropped from rest of the 102nd floor which is 381 metres above from the ground.

we 'll take here the acceleration due to gravity (g ) is 9.8m/s²

Its initial velocity u be 0 m/s ( as it is at rest)

Using Kinematic Equation

here h is the height of 102nd floor

➥ v² = 0² + 2 × 9.8 × 381

➥ v² = 0 + 19.6 × 381

➥ v² = 7467.6

➥ v = √7467.6

➥ v = 86.41 m/s

So, 86.41 m/s penny would be fall.

It is possible because the rubber ball has mechanical energy which is equal to potential energy.

Mechanical energy of an object is the total energy possessed by the object, including the potential energy and the kinetic energy.

M.A = K.E + P.E

Kinetic energy is the energy possessed by an object due to its motion.

Potential energy is the energy possessed by an object due to its position.

When kinetic energy (K.E) = 0

M.A = P.E

Thus, it is possible because the rubber ball has mechanical energy which is equal to potential energy.

Learn more about mechanical energy here: https://brainly.com/question/24443465

Answer:

I think its 25.51 m!!

Explanation:

Answer:

true

Explanation:

sir isaac newton was the first person to explain the relationship between force and motion

46.6666 that is the mass number

Explanation:

14 divided 3.0

Answer:

W = work  F = force   d = distance travelled   cos 0 = adjacent/hypotenuse, the cosine of the angle displaced

Explanation:

Locomotor skills are energy intensive and the pulse rate increases, shortness of breath ensues and pain increases in the muscle due to build up of lactic acid.

Skills are abilities that are acquire through training and practice such the athlete is able to execute them effectively and efficiently.

Some skills that can be acquired in sports include:

Learning a skill requires energy input.

Locomotor skills require the highest energy input.

During the learning of intensive skills such as locomotor skills, the pulse rate increases, shortness of breath ensues and pain increases in the muscle due to build up of lactic acid.

Learn more about locomotor skills at: https://brainly.com/question/20536168

Answer:

They are provided with keen senses of sight, smell and hearing.

Answer:

Terrestrial animals

Answer:

A. pole reversals

Explanation:

It's an evidence of magnetic pole reversal of Earth & sea-floor spreading.

Hope this helps!

Magnetic striping is evidence of seafloor spreading and pole reversals. Hence, option A is correct.

The notion that oceanic crust develops along submarine mountain zones, commonly known as the mid-ocean relevant standard, and expands out laterally away from them. This concept was crucial in the creation of the doctrine of plate tectonics, which transformed geologic thought in the last quarter of the twentieth century.

Shortly after World War II, sonar-equipped warships crisscrossed the oceans, gathering ocean-depth profiles of the seafloor underneath them. The survey data was used to create bas-relief maps of the ocean floor, and by 1953, American oceanic mapmaker Marie Tharp had created the first of many maps that revealed the presence of an underground mountain range of more than 16,000 km (10,000 miles) long in the Coast  Mid-Atlantic Ridge.

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#SPJ2

Answer:

i'm pretty sure it's red.