help me i dont understand

Answer:

1. Flexibility.

2. Muscular Fitness

3. Cardiovascular Fitness

4. Cardiovascular Fitness

5. Flexibility

6. Muscular Fitness

7. Cardiovascular Fitness

Answer:

finding the volume of an irregular shape

Explanation:

One example of how the big bang could have been the birth of the universe is the expansion of it... (Expand on it) (It says in your own words)

Answer:

Newton

it is derived of mass and displacement

Answer:

1. heating

2. entertainment

3. cooling

4.educational purpose

5.comfort

Answer:

25,000 joules

given the formula

Q=Mc(final temperature - initial temperature)

M=50 grams convert to kilogram 0.5

c= 4200 j/kg/k

final temperature=32c

initial temperature=20c

Answer:

some amount of ambition is good for your motivation but excess ambition is dangerous.

Answer:

the anser is

Explanation:

Acceleration is defined as the rate of change of velocity.

Acceleration = (Change in velocity) / time taken

Acceleration = (Final velocity - initial velocity) / time

As the object velocity changes by the same amount in each second, it means the acceleration is constant.

Answer:

Experiment

Materials needed

Stop watch, a small stone, a big stone, a balance.

Procedure

Measure the mass of the two stones.

Hold the two stones about 5m above the ground level.

Drop the stones simultaneously.

Record the time taken for the stones to strike the ground.

Repeat the procedure with different masses of objects at the same height.

Observation, it will be observed that, all the objects dropped from the same height strike the ground at the same time interval.

Conclusion; a falling object doesn't depend on mass

Explanation:

½mv²=mgh

g=½(V²/h)

When an object is held at a height, it posses gravitational potential energy which is mgh, where m= mass, h=height, g=acceleration due gravity

When the object is dropped, the potential energy will be converted to kinetic energy which is ½mv², where V=velocity at which the object moves.

V=∆h/t, ∆h is change in height with respect to time.

½mv²=mgh

Mass cancel out,

g=v²/2h

This implies that g does not depend or is not affected by mass. Hence heavy object and light object will reach the ground at the same time when dropped from the same height. When air resistance is negligible.

Answer:

density is equal to mass divided by volume (m/v)

volume: 12×8×9=864cm³

75÷864=0.09

Answer: 0.09g/cm³

Answer:

It took 2 hours

Explanation:

[tex]{ \bf{time = \frac{distance}{speed} }} \\ [/tex]

distance is 90 miles

speed is 45 miles per hour

[tex]t = \frac{90}{45} \\ \\ t = 2 \: h[/tex]

Answer:

2 hours

Explanation:

45 times 2 is 90

Answer:

54km/hr

Explanation:

Since we have to complete m/s to km/h.

we can simply divide the m/s by (5/18)

so we get 54km/hr

Explanation:

The answer is magnetic north pole

Answer:

Explanation:

Distance traveled = steady speed * time duration = 8m/sec * 8 sec = 64 meters

Answer:

64 m

Explanation:

Multiply 8 m by 8.

Answer:

D. 16 Kgm/s

Explanation:

Let the momentum of the two balls be A and B respectively.

Momentum A = 16 kgm/s

Momentum B = 0 kgm/s (since the ball is at rest).

Total momentum = A + B

Total momentum = 16 + 0

Total momentum = 16 Kgm/s

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

Momentum = mass * velocity

Answer:

Potassium and iodine

Explanation: I took the quick check

Answer:

constructive

alpitude

Explanation:

Collide is your answer

have a good day.

The expression for the position of the particle in terms of velocity and time is given as, s = vt

The given expression:

To find:

Determine the value of the constants from second equation of motion given as:

[tex]s = vt + \frac{1}{2}at^2\\\\substitute \ the \ given \ value \ of \ a\\\\s = vt + \frac{1}{2}(c_1 + c_2v)t^2\\\\s = vt + \frac{1}{2} c_1 t^2 + \frac{1}{2} c_2vt^2\\\\divide \ through\ by \ t^2\\\\\frac{s}{t^2} = \frac{v}{t} + \frac{1}{2} c_1 + \frac{1}{2} c_2v\\\\multiply \ through \ by \ 2\\\\\frac{2s}{t^2} = \frac{2v}{t} + c_1 + c_2v\\\\when \ t = 0\\\\0 = 0 +c_1 + c_2v\\\\c_1 + c_2v = 0\\\\from \ the \ original \ equation;\\\\s = vt + \frac{1}{2} (c_1 + c_2v)t^2\\\\[/tex]

[tex]s = vt + \frac{1}{2}(0)^2\\\\s = vt[/tex]

Thus, the expression for the position of the particle in terms of velocity and time is given as, s = vt

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Hey there!

A pulley is a "system" that has a rope attached to carry heavy materials off the ground. Once you pull the rope, the heavy item will be carried.

Hope this helps!

Have a great day!

Answer:

a. [tex]a=1.875\,ms^{-2}[/tex]

b. [tex]v_{0} =7.5\,ms^{-1}[/tex]

c. [tex]s=60\,m[/tex]

Explanation:

Given,

[tex]u=0\,ms^{-1}\,;[starts\,from\,rest]\\v=15\,ms^{-1}\\t=8\,s[/tex]

a. We know,

∴[tex]v=u+at\\=>15=0+a*8\\a=1.875\,ms^{-2}[/tex]

b. We know,

∴[tex]s=\frac{u+v}{2}*t\\=>s=\frac{0+15}{2}*8\\s=60\,m[/tex]

average velocity,[tex]v_{0} =\frac{s}{t}=\frac{60}{8}=7.5\,ms^{-1}[/tex]

c. From b, the answer is 60 m

hope you have understood this....

pls mark my answer as the brainliest

Answer:

Answer in Observational evidence (b)

The evidence needed to formulate a hypothesis is observational evidence. From keen observations, we are formulating a scientific hypothesis.

Hypothesis is a plausible scientific statement which predicts a process or result of an experiment based on observations. Hypothesis can be made from well established scientific records also.

Some are formulating hypothesis based on some intuitions, while some others are formulated based on inductions or  deductions. An experiment starts from a clear cut hypothesis.

A hypothesis must be testable, falsifiable. A scientific hypothesis must be based on a strict observation and for a considerable time and the observations must support for the statement derived for the solution.

Hence, the evidence is needed for a or a hypothesis to be supported or not supported is observational evidence.

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Answer:

Running is faster, uses more kilojoules and demands more effort from the heart, lungs and muscles than jogging. Running requires a higher level of overall fitness than jogging. Both running and jogging are forms of aerobic exercise.

Explanation:

Answer:

The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.

Carbon is said to provide a “backbone” in many molecules because Carbon atoms can form chains and branches with each other, and other atoms can attach to these, therefor the correct answer is option A

The chemical compound is a combination of two or more either similar or dissimilar chemical elements, for example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

As given in the problem carbon is said to provide a “backbone” in many molecules because Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

The fact that carbon atoms may share electrons with one another to build lengthy chains with other carbon atoms accounts for the enormous variety of organic molecules. Catenation is a characteristic of carbon that makes it special. By transferring their valence electrons to neighboring carbon atoms, carbon atoms can create lengthy chains.

Thus, therefore the correct answer is option A

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We have that the Three  consequences of lack of basic services in community​ are

-Educational Impact

-Insecurity

-Poverty

Lack of basic services in community​

There are many consequences that result from the lack of basic services in a community​ but i shall focus on these three as they are very major impacts

-Educational Impact

Basic service like Water,Electricity ,Mobility and close Proximity to market place has a major impact on the ability of a person pursue educational attainments.we live in a modern world and without power(as) electricity we can not do much of studying in this times

-Insecurity

The Human mind is built with a default setting of Survival.Without the basic services provide persons of low moral will tend to go into illegal acts to survive as the basic needs are necessary for survival

-Poverty

For a community to  grow it is necessary that the right environment is made available for growth and if these requirements are not meet in form of basic services in community​ the community falls under the threat of falling into poverty

In conclusion

The Three  consequences of lack of basic services in community​ are

-Educational Impact

-Insecurity

-Poverty

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Explanation:

Just adding up the horizontal and vertical components of both vectors separately.

Density of the metal is 8.9g/cm^3

Density:-

[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]

SI unit:-

SI unit of density is kg/m^3

CGS unit of density is g/cm^3