the first element on the periodic table of elements is helium true of false

Answers

Answer 1

Answer:

false

Explanation:

it's hydrogen. also hydrogen has one proton and stuff and helium two


Related Questions

Pls help me with this
Quickly
I’ll mark you Brainly

Answers

Answer:

D

Explanation:

Since the full cart has more mass because of the objects, it requires more force to stop.

Answer:

D

Explanation:

The name for the compound with the formula CuBr2 would be written as
a. copper(II) bromide.
b. copper(1) bromide.
c. copper bromine.
d. copper(III) bromid
HURRY PLZ

Answers

Answer:

A. Copper (ll) bromide

I think the answer is A

What wave moves in the same direction as the force that created it?

Answers

The answer is longitudinal waves

An eighth-grade teacher has asked you to present information to her students about how watching television can affect adolescents’ academics and behavior. What important information should you share with this audience?

Write an essay that will serve as the basis for the speech you will deliver to the students. Include important details from the selection "Television and Adolescents" to support your discussion.

As you write, remember your essay will be scored based on how well you:
develop a multi-paragraph response to the assigned topic that clearly communicates your controlling idea to the audience.
support your controlling idea with meaningful examples, information, and references for the text.
cite direct quotes and any information that has been paraphrased from the passages that you have read.
organize your essay in a clear and logical manner, including an introduction, body, and conclusion.
use well-structured sentences and language that are appropriate for your audience.
edit your work to conform to the conventions of standard American English.

Answers

Answer:

Depending on the research you find, it could vary. Explain to them that while watching TV is not an "evil" thing, it can have some effects in the youth. Tell them how it can affect the behavior with friends, family and other people whom are around them. In addition you could even as far as mentioning academic success and failure. Studies confirmed that the television media influences children behavior since early ages. It is extremely prejudicial to expose young children to television for many reasons such as: underdevelopment, optical issues, brain damage, difficulty of learning, speaking and obesity.By the time these kids become adolescents they are obese, sedentary, with heart illness and other psychological disorders. The exposure to violence,  are also damaging for their mental healthy and behavior. Kids that spend great part of their time watching tv or playing video games are more susceptible to depression and mental diseases. In order to avoid these pathologies, children must be encourage to play outside and practice sports.

Watching television is very much informative on one side if we use it effectively but the prolonged use and involving more in entertainments definitely  affects the academics of students and even in their behavior badly.

What are the effects of watching television on  adolescents’ academics and behavior ?

By the time they turn 15, the typical child born today will have spent more time watching television than in school. According to research, watching a lot of violent TV is linked to the emergence of aggressive attitudes and actions.

Television seems to encourage stereotypes about race and gender roles as well. Last but not least, television advertisements frequently prey on kids' innocence and can encourage and promote excessive materialism.

All of these negative effects can be lessened if parents limit their children's overall television consumption, support some shows while discouraging others, and constantly discuss the meaning of what they see with them.

It is challenging to assert that television programming has no impact on young people. Yet, it is similarly challenging to isolate individual shows or programming genres as the root of certain behaviors in kids without taking into account the countless alternative influences that might have an impact on their behavior.

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How much force is needed to accelerate a 62 kg skier at 3 m/sec2?

Answers

Answer:

The answer is 186 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 62 kg

acceleration = 3 m/s²

We have the final answer as

force = 62 × 3

We have the final answer as

186 N

Hope this helps you

If a star is found directly above the sun on the h-r diagram, what can you conclude about its size?.

Answers

Answer:

It is larger than the Sun.

Explanation:

Brainliest pls

:3

What is the relationship between speed and kinetic energy?

Answers

Explanation:

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

The answer is : Kinetic energy is proportional to (speed squared).

how does acceleration due to gravity vary with latitude​

Answers

cause of the shape of the earth

Explanation:

As the earth is an oblate spheroid, its radius near the equator is more than its radius near poles. Since for a source mass, the acceleration due to gravity is inversely proportional to the square of the radius of the earth, it varies with latitude due to the shape of the earth.

The period of a sound wave coming from an instrument is 0.002 seconds. what is the frequency of the sound? hz

Answers

The frequency of the sound will be 500 Hz. The frequency of the sound is the inverse of the time period.

What is the frequency of the sound?

A sound pressure wave's frequency, also known as pitch, is the number of times it repeats itself every second.

The frequency of the sound is the inverse of the time period. The frequency is given as;

[tex]\rm f= \frac{1}{t} \\\\ \rm f= \frac{1}{0.002 } \\\\ \rm f= 500 \ Hz[/tex]

Hence the frequency of the sound will be 500 Hz.

To learn more about the frequency of the sound refer to the link;

https://brainly.com/question/1435829

Answer:

500 Hz

Explanation:

got it right on edge

Which movement will require the greatest amount of work to be done?
A a force of 10N moving an object a distance of 3.0m
B a force of 10N moving an object a distance of 5.0m
C a force of 15N moving an object a distance of 3.0m
a force of 15N moving an object a distance of 5.0m
D
A
B
Ос

Answers

Answer:

it's d)a force of 15N moving an object a distance of 5.0m pls mark me brainlist.

D) A force of 15N moving an object a distance of 5.0m

work = force*displacement

Option D has the greatest force (15N) and greatest displacement (5.0m), making its work the greatest.

Why can’t security gates detect plastic bomb ?

Answers

Answer:

The plastic is too much like other things that are allowed. Sometimes it is too thin, as well. Or sometimes the gates are just not that modern and advanced enough to detect them.

A space traveler discovers that her weight on a new planet is 192 newtons. Her mass is 68 kilograms. What is the gravitational acceleration of the new planet?



A). 2.8 m/s²

В.) 9.8 m/s²

C.) 34 m/s²

D.) 68 m/s²​

Answers

Answer:

g ≈ 2.82 m/s^2

Explanation:

By W = mg,

W = weight (in newtons)

m = mass (in kg)

g = gravitational acceleration (in m/s^2)

[tex]192 = 68g[/tex]

[tex]g = 2.82352941176 m/s^2[/tex]

g ≈ 2.82 m/s^2

An ant walks 8 squares to the East then walks 8 squares to the South then turns and walks 12 squares to the West and finally 18 squares to the North. What was the displacement of the ant?

Answers

Answer:

the ant is 4 squares west and 10 squares north.

Explanation: you just subtract north with south and east with west and the direction is gonna be where the bigger number is.

What is the pattern for mass, speed, and energy.
Please answer this asap.
thanks.

Answers

Answer:

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.

Explanation:

What would happen if a needle hit the earth at the speed of light.

Answers

Answer:

The earth would be destroyed as we know it.

Explanation:

There's actually a utube vid about that.

Answer:

I think that the best question I've heard today

Explanation:

lol I think it would do catastrophic damage

If the car has a mass of 1000kg what is the cars weight

Answers

Answer:

2204.62 pounds

Explanation:

Find direction of sum

Answers

Explanation:

V² = Vx² + Vy²

= [3.14 cos(30)]² + [2.71 cos(300)]²

= 9.23

V = root 9.23 = 3.038

can you please mark my answer brainliest ♥️...

According to Newton’s second law of motion, which object will require the most force in order to change its motion?

A.
The one with the greatest mass and fastest speed

B.
The one with the least mass and greatest speed

C.
The one with the greatest mass and lowest speed

D.
The one with the least mass and slowest speed

Answers

Answer:

A. The one with the greatest mass and fastest speed

Explanation:

Newton's Second Law of Motion

F ∝ ma F ∝ m(v - u)F ∝ mv - muF ∝ ΔP

So, as per the equation the force required to be applied is directly proportional to the change in momentum.

Therefore, we can understand two things :-

More mass = more force requiredFaster speed = more force required

The correct option is A.

What is the applied voltage of a circuit that draws 2 amps through 2 Ohms of Resistance?

Answers

Answer:

255 volts

Explanation:

hope this helps

pls mark as brainliest

how does the gravity of earth affect the moon?



(for science)

Answers

Answer:

The motion of the Moon is affected by the gravity of the Sun AND the Earth. The Moon's gravity pulls on the Earth and makes the tides rise and fall every day.

Explanation:

As the Moon passes over the ocean, there is a swell in the sea level. The Earth's gravitational force accelerates objects when they fall.

Please Help I will Mark Brainiest!!!
The isotope of an atom containing 40 protons and 51 neutrons suddenly has two neutrons added to it.

What isotope is created?


Zirconium-53


Zirconium-93


Antimony-93


Antimony-53

Answers

Answer:

Hey, the answer is Zirconium-93

Explanation:

Im very positive about this question, so i hope I helped you ;p

Answer:

Zirconium-93

Explanation:

when we add up the 40 protons and 53 neutrons it gives 93 and a protons and neutron 93 gives a Zirconium-93

Thanks theres your answer

How are motion and acceleration alike? How are they different?

Answers

Answer:

Motion is the action of moving, and acceleration is the action of moving faster or increasing speed. I guess you could say they are both in a state of motion or moving.

Explanation:

If two skaters standing still push against each other, the speed of the first is the same as the speed of the second, and in the opposite direction ONLY if both people have the same mass.
True or False

Answers

Answer:

True!

Explanation:

F = ma (force = mass times acceleration)

The force on each skater will be the same because of Newton's 3rd law...

F (1st skater) = F (2nd skater)

ma (1st skater) = ma (2nd skater)

If the skaters have different masses, they WILL have a different acceleration. Feel free to ask questions if needed.

8Why do ionic
compounds tend to
have high meling
and boiling points?

Answers

Answer: Ionic compounds have high melting points and boiling points because the electrostatic forces of attraction between oppositely charged ions are strong and large amount of energy is require to separate the ions.

Explanation:

Help me please my teacher requires work!!

An object has a constant acceleration of 2.0 meters per second4. The time required for the object to accelerate from 8.0 meters per second to 28 meters per second is​

Answers

The change needed is from 8 to 28, a change of 20 m/s. At a rate of 2m/s/s it will take 10 seconds for it to happen (2x10=20). I hope this helps.

Small rocky bodies that are thought to be leftover remnants from the formation of the solar system are called __________. Which term best completes the sentence

Answers

An asteroid is a type of space rock, much smaller than a planet, and moves in an elliptical orbit around the Sun.

What are asteroids?

It is a smaller body that is part of the solar system and has a diameter of less than 1,000 kilometers.

Asteroids are the subject of constant study due to the proximity they maintain to Earth, despite the fact that the chances of their impacting are very low despite the fact that they have reached the planet in a very remote past.

Therefore, we can conclude that asteroids are characterized by having a very weak gravitational force, they are celestial bodies that orbit around the Sun, and that they are remnants of the matter that gave rise to the Solar System.

Learn more about asteroids here: https://brainly.com/question/9676376

A force is applied to a box to move it to the right across the kitchen floor what forces are being used?

Answers

All of them
Explanation: yes

Answer:

The static "frictional force" and the "kinetic friction" will act on the box.

Which explanation is based on scientific evidence?​

Answers

Answer:

Scientific evidence is evidence that serves to either support or counter a scientific theory or hypothesis. Such evidence is expected to be empirical evidence and interpretable in accordance with scientific method.

Explanations which are not based on mere observations or intuitions and clearly based on reported evidences and experiments are called scientific evidence.

What are scientific evidences ?

Although scientists frequently utilize evidence in other ways, such as when applying ideas to real-world issues, scientific evidence is evidence that helps to either support or refute a scientific theory or hypothesis. Such proof is anticipated to be empirical and interpretable using scientific techniques.

The requirements for scientific evidence vary depending on the area of study, but they are often based on the outcomes of statistical analysis and the quality of scientific controls.

Scientific theories and laws as well as intuitional predictions have limitations to gather information from a new system. How ever scientific evidences provide more accurate data.

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Calculate kinetic energy in joules of 1500 kg of a car moving 18m/s

Answers

Answer:

240,000 J

Explanation:

KE = 1/2mv² = 1/2 (1500kg)(18m/s)² = 240,000 J

What type of relationship exists between momentum and mass?

a. direct
b. inverses
c. logarithmic
d. quadratic

Answers

Answer:

A. Direct

Explanation:

Thats just how it be

Answer:

Direct

Explanation:

EDGE 2020

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