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Answer:

Many forms of energy exist, but they all fall into two basic categories:

Explanation:

Thermal energy is due to the movement, and the kinetic energy associated with this movement, of molecules that make up an object or substance.

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Answer:

1.) mechanical energy and 2.) potential energy

Explanation:

Sound is made up of vibrations thermal energy consists of moving molecules in air or in an object, and mechanical energy is the combination of kinetic and potential energy of a moving object.

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The velocity the 5 Kg shot put would have, given the data from the question is 4 m/s

Momentum is defined as the product of mass and velocity. It is expressed as

Momentum = mass × velocity

We'll begin by calculating the momentum of the 1 Kg ball. This can be obatined as follow:

Momentum = mass × velocity

Momentum = 1 × 20

Momentum = 20 Kg.m/s

Momentum = mass × velocity

20 = 5 × velocity

Divide both sides by 5

Velocity = 20 / 5

Velocity of 5 Kg = 4 m/s

Thus, the 5 Kg shot put will have a velocity of 4 m/s

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The net electric flux in such gaussian surface is zero.

In a uniform electric field existing in a region of space and contains no charge, it is impossible for there to be an electric flux in such space. This is because flux generated in an electric field is a product of the charge and the permittivity of the free space.

In other words, every field line sent into a given closed surface continues through the interior and is typically directed outward somewhere on the surface if there is no provided net charge there. The net or total electric flux is zero because the negative flux barely equals the positive flux in magnitude.

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By the charge density, the curved surface area of the cylinder charge is 0.141 nC.

We need to know about charge density to solve this problem. The charge density can be determined as

λ = Q / A

where λ is charge density, Q is charge and A is surface area.

The parameter given is the charge density and the solid cylinder shape which are :

λ = 15 nC/m²

r = 2.5 cm = 0.025 m

L = 6.0 cm = 0.06 m

Find the curved surface area of cylinder

A = 2πrL

A = 2π. 0.025. 0.06

A = 9.43 x 10¯³ m²

Find the charges

Q = λ x A

Q = 15 x 9.43 x 10¯³

Q = 0.141 nC

Hence, the curved surface area of the cylinder charge is 0.141 nC.

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Fossil fuels, hydroelectric power, and wind power ultimately get their energy from sun.

Fossil fuels are hydrocarbons which are composed of carbon, hydrogen and oxygen. These are obtained from the decomposition of animals and organisms. The fossil energy almost came from the sun

Hydroelectric power is an indirect form of solar energy generated from water falling from high to low potential. It is a better alternative of electricity as it is environment friendly and do not release wastes, smoke and heat.

Wind power is renewable energy and generated from high speed wind. It is used to run wind turbines is a sustainable source of solar energy.

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Answer:

3. There would be no sound.

Explanation:

Sound is produced by vibrations that travel through a medium, most commonly through air.

If there is no matter to vibrate (such as in the vacuum of space) then there's no way for a sound wave to be produced.

Thus the answer is option 3. There would be no sound.

Coach Carver has created a new team game for his students to play. It involves sprinting, tagging, and throwing a ball. Each team consists of 10 to 20 students. Which place is the safest to play the game

Answer:

Football Field

Explanation:

In sporting or gaming activities that involve sprinting, tagging, and throwing a ball. The safest place to play the game is "FOOTBALL FIELD"

This is because the football field is originally designed and created for footballing activities which are deemed spacious and free of danger. There is also evidence in the Olympic sporting activities.

Therefore, in this case, even though there is no option in the question, the correct answer is the Football field.

Answer:

Evidence

Explanation:

Answer:

The person delivered a power of 2,558 Watt

Explanation:

Work and Power

Mechanical work is the amount of energy transferred by a force. It's a scalar quantity, with SI units of joules.

Being  the force vector and  the displacement vector, the work is calculated as:

[tex]W=\vec F\cdot \vec s[/tex]

If both the force and displacement are parallel, then we can use the equivalent scalar formula:

W=F.s

Power is the amount of energy transferred per unit of time. In the SI, the unit of power is the watt, equivalent to one joule per second.

The power can be calculated as:

[tex]\displaystyle P=\frac {W}{t}[/tex]

Where W is the work and t is the time.

If the person lifts a mass of m=200 Kg, then exerts a force equal to its weight:

F = m.g = 200*9.8 = 1,960

F = 1,960 N

The work done when lifting the weight 7 times by a distance of s=2.2 m is:

W = 7*1,960*2.2=30,184

W = 30,184 J

Finally, the power delivered in t=11.8 seconds is:

[tex]\displaystyle P=\frac {30,184}{11.8}[/tex]

P = 2,558 Watt

The person delivered a power of 2,558 Watt

The frequency [tex]5.3 \times 10^3 \mathrm{~Hz}[/tex]  that the submarine B detects a frequency f' as described by Equation 17.19.

Given:

Submarine A velocity, [tex]v_{s}=11\;m/s[/tex]

Submarine A Frequency, [tex]F = 5.27 \times 10^{3}\;Hz[/tex]

Submarine B velocity, [tex]v_{o}=3\;m/s[/tex]

As the sign of the submarine B frequency is positive. So, The submarine B is moving away from Submarine A. Therefore, The observer from submarine B detects the frequency [tex]f^{'}[/tex]

Using the Doppler Shift formula, we can determine the frequency of the sonar signal that the crewman in submarine B heard:

[tex]\begin{gathered}f_o=f_s\left(\frac{v-v_o}{v-v_s}\right), \\f_o=5.27 \times 10^3 \mathrm{~Hz} \cdot\left(\frac{1533 \frac{\mathrm{m}}{\mathrm{s}}-3 \frac{\mathrm{m}}{\mathrm{s}}}{1533 \frac{\mathrm{m}}{\mathrm{s}}-11 \frac{\mathrm{m}}{\mathrm{s}}}\right)=5.3 \times 10^3 \mathrm{~Hz} .\end{gathered}[/tex]

Hence, the frequency of [tex]5.3 \cdot 10^3 \mathrm{~Hz}[/tex] that the submarine detects a frequency f' as described by Equation 17.19.

A frequency is the quantity of waves produced each second.

A measure of frequency is the number of times in a second that an alternating current (AC) changes from positive to negative. Direct currents do not experience this switching (DC). Hertz is used to measure frequency (Hz) The period is the length of time it takes for an AC current to start at zero, change from positive to negative, and then return to zero (i.e., the length of time it takes to complete one cycle), while the frequency is the reciprocal of the period. In contrast to low frequency, which has fewer waves per second but a longer period, high frequency refers to the number of waves per second and the length of the period.

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Answer:

621.83grams

Explanation:

Using the formula;

Mole = mass ÷ molar mass

Where;

Mole = mol

Mass = grams

Molar mass = g/mol

According to the information given in this question, number of moles = 3.1mol, mass of Hg = ?, Molar mass (MM) of Hg = 200.59g/lol

Hence, using mole = mass/MM

3.1 = mass / 200.59

mass = 200.59 × 3.1

Mass = 621.829

Mass = 621.83grams

Answer:

True

Explanation:

Solids, Liquids, and Gases are all make up of atoms and molecules.

(1) The height reached by cat A is 2.5 m.

(2) The speed of cat A before it hits the ground is 36.4 m/s.

(3) The speed of cat B before it hits the ground is 22.39 m/s.

(4) The time spent in air by cat A than cat B is 1.43 seconds.

The time of motion of cat A is calculated as follows;

h = vt - ¹/₂gt

-23 = 7t - 4.9t²

4.9t² - 7t - 23 = 0

solve the quadratic equation using formula method;

a = 4.9, b = -7, c = - 23

t = 3.0 seconds

The time of motion of cat B is calculated as follows;

h = vt - ¹/₂gt

23 = 7t + 4.9t²

4.9t² + 7t - 23 = 0

solve the quadratic equation using formula method;

a = 4.9, b = 7, c = -23

t = 1.57 seconds

h = u²/2g

h = (7²)/(2 x 9.8)

h = 2.5 m

v = u + gt

v = 7  + 3(9.8)

v = 36.4 m/s

v = u + gt

v = 7  + 1.57(9.8)

v = 22.39 m/s

Time difference = 3 s - 1.57 s = 1.43 seconds

Thus, the height reached by cat A is 2.5 m.

The speed of cat A before it hits the ground is 36.4 m/s.

The speed of cat B before it hits the ground is 22.39 m/s.

The time spent in air by cat A than cat B is 1.43 seconds.

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Answer: mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. weight is the weight of an object is the force acting on the object due to gravity. and gravity is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another.

Explanation: and that is mass weight and gravity

Answer:

I think it is the last option

Explanation:

The model that correctly represents the product or products of the chemical reaction is the first one. Thus, the correct option for this question is A.

A chemical reaction may be defined as a type of reaction in which one or more substances that are known as the reactants are considerably converted to one or more different substances that are known as the products.

In a chemical reaction, the molecules or atoms of the substance may always remain the same in the reactant or product. That is the mass of the chemical substance may always remain the same. While model 2 and 4 increases the mass of compound A in the given reaction. So, they are eliminated.

Option 3 is incorrect because when you get a product of any chemical reaction, it may never be separated automatically as described in option C.

Therefore, the model that correctly represents the product or products of the chemical reaction is the first one. Thus, the correct option for this question is A.

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Answer:

Imp = 20000 [kg*m/s]

Explanation:

In order to solve this problem we must divide it into two parts. In the first part we must use the following equation of kinematics.

[tex]V_{f}=v_{i}-a*t[/tex]

where:

Vf = final velocity = 0 (the car stops)

Vi = initial velocity = 20 [m/s]

a = acceleration [m/s²]

t = time = 0.5 [s]

Acceleration is negative as the cart slows down as it stops.

[tex]0=20-a*0.5\\20=0.5*a\\a=40 [m/s^{2}][/tex]

The second part is the determination of momentum, which is defined as the product of force over a given time. But to determine the force we must use Newton's second law which tells us that the sum of the forces of a body is equal to the product of mass by acceleration.

∑F = m*a

[tex]F = 1000*40\\F = 40000[N][/tex]

Now the impulse or momentum

[tex]Imp = F*t\\Imp = 40000*0.5\\Imp=20000[kg*m/s][/tex]

Answer:

add lotion

Explanation:

The correct answer is 19.7 m/s.

Range is the height of the projectile when it reaches a vertical velocity of zero; after that, gravity will take over and quicken the object's descent. The projectile range, which is determined by the object's initial velocity, is the horizontal displacement of the object projected.

Only when one force is applied at the start of the trajectory does projectile motion occur; thereafter, gravity is the only resistance. A projectile launched under specified beginning circumstances will have a range in physics. Assuming a flat Earth with a consistent gravity field and no air resistance may make it more predictable.

Range R = 38.7 m

Acceleration due to gravity g =9.8 m/s

Launch angle θ = 51

Range of the projectile is given by

R = [tex]u^2[/tex] Sin2θ / g

[tex]u^2[/tex] = gR/ Sin 2θ

u = √gR/ Sin 2θ

u = √ 9.8 × 38.7 / Sin ( 2 × 51)

u = 19.7 m/s.

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Answer:

The answer in 5m/s

Explanation:

You use the formula s=d devided by t, so in other words, you devide 45 meters by 9seconds and the answer is 5m/s

Answer:

D By looking all the way to the cosmological horizon, we can see the actual conditions that prevailed all the way back to the first instant of the Big Bang.

Explanation:

Astrophysicists are able to determine the conditions that existed in the early universe, by using instruments such as telescopes to observe and study cosmic horizons. More ideas about the early universe can be found from the thermal light present in cosmic backgrounds.

Scientists study these details that provide an insight into the conditions that existed so many years ago. They have been able to determine that the Big Bang involved so many collisions from these observations.

Answer:

1

Explanation:

Answer:

[tex]\displaystyle \frac{x}{\sin x} = \sum^{\infty}_{n = 0} \frac{(2n + 1)!}{(-1)^nx^{2n}}[/tex]

General Formulas and Concepts:

Calculus

Differentiation

Sequences

Series

Taylor Polynomials

Power Series

Explanation:

*Note:

You could derive the Taylor Series for sin(x) using Taylor polynomials by differentiation by usually you have it memorized.

We want to obtain an infinite amount of derivatives of the given:

[tex]\displaystyle \frac{x}{\sin x}[/tex]

We know that a power series is defined as an infinite derivatives of a function. We know that the power series for sin(x) is:

[tex]\displaystyle \sin x = \sum^{\infty}_{n = 0} \frac{(-1)^nx^{2n + 1}}{(2n + 1)!}[/tex]

Divide x by the power series to obtain our derivatives:

[tex]\displaystyle \frac{x}{\sin x} = \sum^{\infty}_{n = 0} \frac{x}{\frac{(-1)^nx^{2n + 1}}{(2n + 1)!}}[/tex]

Simplify this down:

[tex]\displaystyle \frac{x}{\sin x} = \sum^{\infty}_{n = 0} \frac{(2n + 1)!}{(-1)^nx^{2n}}[/tex]

And we have our final answer.

Topic: AP Calculus BC (Calculus I + II)

Unit: Power Series

   The value of the acceleration of the earth toward it when it accelerates toward the earth with 9.8m/s² is a = 7.35×10-²³m/s².

   Forces are the definition of Newton's second law, which is stated under the relation:

∑ Force = mass × acceleration.

  In other words, force is the origin of motion since it generates acceleration in a system.

   In this case we must complete the statement:

"A student with mass 45 kg jumps off a high diving board. Using 6. 0×1024 kg for the mass of the earth, what is the acceleration of the earth toward her as she accelerates toward the earth with an acceleration of 9. 8 m/s2 ? assume that the net force on the earth is the force of gravity she exerts on it."

  We determine the Force of the student:

F = ma

F = 45kg * 9.8m/s².

F = 441N

  Now we go to the acceleration of the earth:

a = F/m

a = 441N / 6×10²⁴ Kg

a = 7.35×10-²³m/s².

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Answer:

ADD ANSWER 5 PTS?

Explanation:

ME : Seriously

BRAINLY: 5 PTS!

Answer:

they require the same amount of work

Explanation:

the formula for work is

W=Fnet*Displacement

and Fnet =m*a

a=9.81 m/s^2

Which gives us

W=ma*d

The set up would be;

(35kg*9.81m/s^2)*4 m=W

(70kg*9.81m/s^2)*2m=W

W= 1373.4 J

Both are the same therefore the correcr answer is *both require the same amount of work*

Answer:

erosion

Explanation:

grows into the eirth each year. the atmosphere and how the worldchanges every year

Answer:

the sun

Explanation:

that is how the solar system works

Hello!

He will miss it by ≈ 0.852 m

Begin by finding the amount of time necessary to hit the target. Use the formula t = d / s:

t = 75 / 180 = 0.4167 sec

Use the equation d = vi + 1/2at² to solve for the amount the bullet will miss the target. (vi is 0 in this instance). We are solving for the vertical component, so use a  = 9.81 m/s (gravity).

d = 0 + 1/2(9.81)(0.4167²)

d ≈ 0.852 m