suppose an arrow is shot upward on the moon with a velocity of 30 m/s, then its height in meters after t seconds is given by h ( t )

Answer:

spin the weals on the train

Explanation:

The type of bond found in pure gold is metallic bonding, indicated by metallic bonds. Therefore option A is correct.

Metallic bonding occurs between metal atoms, such as gold, and is characterized by the sharing of electrons among a sea of delocalized electrons.

In metallic bonds, the valence electrons of metal atoms are not strongly bound to any particular atom but are free to move throughout the metal lattice.

This sharing of electrons gives rise to properties such as high electrical and thermal conductivity, malleability, and ductility, which are characteristic of metals like gold.

Unlike ionic or covalent bonds, metallic bonds do not involve the transfer or sharing of electrons between different elements.

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ANSWER:

3) 1234 m

STEP-BY-STEP EXPLANATION:

Precision refers to how close two measurements are to one another. The highest number with a significant digit is the most precise, the number that has the most significant figures. Therefore, the less accurate is the opposite.

Which means that in this case, the least precise number is 1234 m.

The correct option is option E) three times slower than on Earth.

The acceleration due to gravity near the surface of Mars is about one-third of the value near the Earth's surface, which is approximately 3.71 m/s^2. On Earth, the acceleration due to gravity is approximately 9.8 m/s^2.

Gravity is a fundamental force of nature that acts between any two masses. It is what holds the planets in orbit around the Sun, and what keeps the Moon in orbit around the Earth.

The strength of the gravitational force between two objects depends on their masses and the distance between them.

The final velocity of an object falling under the influence of gravity can be calculated using the equation:

vf = vi + g * t

where:

vf = final velocity

vi = initial velocity (assumed to be zero for an object dropped from rest)

g = acceleration due to gravity

t = time of fall

If a rock fell for the same amount of time on Mars and Earth, the final velocity of the rock on Mars would be:

vf = vi + 3.71 m/s^2 * t

and the final velocity of the rock on Earth would be:

vf = vi + 9.8 m/s^2 * t

Since the time of fall is the same in both cases, we can see that the final velocity of the rock on Mars would be one-third of the final velocity of the rock on Earth. So, the speed with which the rock hit the ground on Mars would be lower than the speed with which it hit the ground on Earth.

Therefore, The correct option is option E) three times slower than on Earth.

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Average speed = 3.6km/h

The overall distance the object covers in a given amount of time is its average speed. A scalar value represents the average speed. It has no direction and is indicated by the magnitude.

Calculating the ratio of the body's total distance traveled to the time needed to complete that distance yields the average speed formula. As stated in the average speed equation:

S average =  Total Distance traveled/Total Time taken

A scalar value represents the average speed. The change in position or displacement (x) divided by the time intervals (t) during which the displacement happens is the definition of average velocity. The average velocity is measured in meters per second or M/s.

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The volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L. Details about volume can be found below.

The volume of a gas can be calculated using the Charles law equation as follows:

V1/T1 = V2/T2

Where;

1/310 = V2/248

248 = 310V2

V2 = 248 ÷ 310

V2 = 0.8L

Therefore, the volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L.

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Answer:

The answers to the questions are

1. Sound energy

2. Conductor

3. Flow

4. Thermal energy (g underlined)

5. Electric current

6. Insulator

7. Light energy

8. Electric circuit

The underlined letters are, e, n, g, r, y, e which can be rearranged to spell energy

Explanation:

1. Sound energy is the wave form of mechanical energy that is transferred by the vibration of the of the medium through which it propagates

2. An electrical conductor is used to conduct electricity from one point to another

3. An object or material flows when it has a smooth motion towards a given direction, such as a river

4. Thermal energy is the form of energy that is given off by a body as sensible heat that can be measured as a temperature by a thermometer

5. Electric current is the electricity in a circuit

6. An insulator is a material that limits the flow of electricity or heat

7. Light energy is the form electromagnetic energy which the eye can sense

8. An electric current flows an electric circuit which consist of a source of electricity and an path through which the electric current can easily flow.

Answer:

I = 20 A

Explanation:

The question says that, "A load of 6,000 C is conducted through a cross section in 5 minutes. Determining-if a current is not correct, we will find the value of?"

We have,

Charge, q = 6,000 C

Time, t = 5 minutes = 300 s

We need to find the current. We know that, the charge flowing per unit time is equal to current. So,

\(I=\dfrac{q}{t}\\\\I=\dfrac{6000}{300}\\\\I=20\ A\)

So, the current flowing through the circuit is 20 A.

Answer:

The answer is . A 46.2g

Answer:

v

Explanation:

bv

Answer:

Elephant and the eath because Fg is determined by Mass of an object.. So elephant has greater mass therefore, it's Fg is higher

According the universal  law of gravitation, the gravitational force is directly proportional to the mass of an object.  An elephant weighs so much than a man and thus it will experience larger gravitational force from earth.

Gravitational force is a resistive force by which an object attracts other objects towards its centre of mass. The force exerted by the object depends on the mass and the force experienced by the other object depends on its mass and distance between the two objects.

According to universal law of gravitation, the gravitational force is directly proportional to the mass of the object and distance from the ground. The expression for the law is written as:

\(\rm g = G \frac{M_{1} M_{2}}{r^{2}}\)

Where, G is the universal gravitational constant and M1 and M2 be the masses of two objects which and r be the distance between them. As per this relation gravity decreases with increase in distance and increase with an increase in mass.

Therefore, a massive body such as an elephant will experience greater gravitational force from the earth.

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Answer:

D.

Explanation:

Imagine a circular loop contained in the plane of this screen. suppose that a straight current-carrying wire that is perpendicular to this screen passes through the center of the loop. if the current in the wire were to be increased by a factor of 4, the strength of the magnetic on the loop will increase 4 times

magnetic field due to an infinitely straight current-carrying wire = B1 =

mu0 * I / 2πr

if current in the wire were to be increased by a factor of 4

B2 = mu0 * (4I) / 2πr

B2  = 4 B1

The strength of the magnetic on the loop will increase 4 times

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Answer:

Approximately \(52\; {\rm ^\circ C}\) (approximately \(325\; \rm K\)), assuming that nitrogen is an ideal gas.

Explanation:

Let \(R\) denote the ideal gas constant. By the ideal gas law, the following equation would relate these quantities:

\(P \cdot V = n \cdot R \cdot T\).

Rearrange this equation to obtain an expression for \(T\):

\(\begin{aligned}T &= \frac{P \cdot V}{n \cdot R}\end{aligned}\).

Look up the ideal gas constant: \(R \approx 8.314\; \rm Pa \cdot m^{3} \cdot K^{-1} \cdot mol^{-1}\).

Convert each measurements from the question to standard units:

Substitute these values into the expression for \(T\):

\(\begin{aligned}T &= \frac{P \cdot V}{n \cdot R} \\ &\approx \frac{101.3\times 10^{5}\; \rm Pa \times 0.080\; \rm m^{3}}{3.0\; \rm mol \times 8.314\; \rm Pa \cdot m^{3} \cdot K^{-1} \cdot mol^{-1}} \\ &\approx 324.91\; \rm K\end{aligned}\).

Convert the unit of this temperature to degrees celsius:

\(\begin{aligned} & 324.91\; \rm K \\ =\; & (324.91 - 273.15)\; {\rm ^\circ C} \\ \approx \; & 52\; {\rm ^\circ C} \end{aligned}\).

The Dwight d. Eisenhower was awarded the highest-ever rank in the u. S. Armed forces.

What is u.s. armed force?

The American military is comprised of the United States Armed Forces. There are six service branches in the military: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The Department of Defense (DoD) and Department of Homeland Security (DHS), both federal executive departments, serve as the main vehicles by which military policy is carried out.

How many army forces are present in the u.s. armed force?

The Navy, Air Force, and U.S. Army are the three services with the most active personnel. The U.S. military is vastly outnumbered by China, even though it had over 1.4 million members in 2021. In terms of military expenditure, the US truly reigns supreme. The amount per person in 2021 was 2,186 dollars.

As a cadet at the United States Military Academy at West Point, Dwight D. Eisenhower took the oath in June 1911, officially beginning his military career. He attended West Point with Omar Bradley's class and graduated in June 1915. He was then commissioned as a second lieutenant in the American Army.

Therefore we can conclude that Dwight d. Eisenhower was awarded the highest-ever rank in the u. S. Armed forces.

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The given statement is that the temperature in degrees Fahrenheit in times square during a day in August can be predicted by the function t(x).

Hence, it can be stated that the function t(x) provides a prediction for the temperature in degrees Fahrenheit in Times Square for a given value of x. Here, x represents the input variable.

It is important to note that the input variable must be provided in the correct units and format as required by the function t(x).The content loaded refers to the data that has been previously collected and is available for analysis. In the context of predicting temperature using function t(x),

the content loaded can refer to temperature data collected in Times Square during August on previous days or years. This data can be analyzed and used to develop the function t(x) that predicts temperature for a given input variable x.

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Explanation:

Veins carry deoxygenated blood from different parts of the body to our heart. ... Since a larger volume of blood is collected in the right auricle than that of the left auricle, right auricle is larger than the left auricle.

The force that the skydiver pull up on the earth with a mass of 37.9 kg is 371.42 N.

Force can be defined as the product of mass and acceleration.

The force that the skydiver pull up on the earth with is the same as its weight. To calculate the weight of the skydiver, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force that the skydiver pull up on the earth is 371.42 N.

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Answer:

The final answer is \(6.1 BTU = 6.5621*103 KJ\)

Explanation:

\(1 BTU= 252 cal\\1 BTU =252 × 4.2 kJ\\6.1 BTU = 252 × 6.1×4.2 kJ = 6562.08 kJ\\ = 6.5621 × 103 kJ\\\)

Hence, \(6.1 BTU = 6.5621 × 103 kJ\)

Answer:

a thunder

Explanation:

It's because the difference in speed of light and sound

So we hear thunder later

Answer:

C

Explanation:

Therefore, Thunder Follows The Easiest Part. And it is not (A) because Thunder Follows A Lightening Not Vice Versa.

The amount of heat required to vaporize a certain amount of water is given by:

Q = ml

where Q is the amount of heat, m is the mass of water, and l is the specific latent heat of vaporization.

In this case, the heat energy supplied to the water is:

Q = Pt

where P is the power supplied and t is the time taken.

Since the water is at its boiling point, its temperature remains constant while it is vaporizing. Therefore, the energy supplied to the water is solely used for vaporization.

Equating the two expressions for Q, we have:

Pt = ml

Solving for t, we get:

t = ml / P

where m = 250 g and l = 2260 J/g.

Substituting the values, we get:

t = (250 g) x (2260 J/g) / (3000 W) = 0.1883 hours

Converting to minutes, we have:

t = 0.1883 hours x (60 minutes/hour) = 11.3 minutes (approx.)

Therefore, it will take approximately 11.3 minutes for 250 g of water to vaporize.

Respuesta: T2 = 131.04K

Explicación: Dado lo siguiente:

Presión, P1 = 1.5 atm = 1.5 × 760 = 1140 mmHg

Presión, P2 = 1.2 atm = 1.2 × 760 = 912 mmHg

Volumen, V1 = 500cm3 Volumen, V2 = 300cm3

Temperatura, T1 = 273K Temperatura, T2 =?

Usando la fórmula de gas combinada:

P1V1 / T1 = P2V2 / T2

Ingresando nuestros valores:

(1140 × 500) / 273 = (912 × 300) / T2

T2 × (1140 × 500) = 912 × 300 × 273

T2 = 74692800/570000 T2 = 131.04K

Explanation:

there is no relationship between small mass and the bigger mass, but it can be related with the acceleration. Since Force is constant, acceleration is inversely proportional to the mass. Greater the mass, lesser is the acceleration and vise versa

The inductor current is 0.4 mA.

We are given that,

The capacitor voltage has its maximum value= Vm = V₀ = 50 V

We can calculate the angular velocity ω, by the formula,

ω = 1 / √( LC )

ω = 1 / √( ( 40 × 10⁻³ H ) × ( 16 × 10⁻¹² F) )

ω = 1 / √( 64 × 10⁻¹³  )

ω = 1 / 0.0000008

ω =1.2× 10⁶ s⁻¹

Therefore ,time for the capacitor to fully discharge can be calculated as,

V = V₀(sinωt)

sinωt = V/V₀

sinωt = = 50/50

sin(ωt) = 1

ωt = sin⁻¹ (1)

ωt = π/2

1.2x 10⁶ t = π/2

t = 1.57 / (1.2 × 10⁶)

t = 1.308 x 10⁻⁶s

Thus , the inductor current at that time can be given as,

I(t) = V₀√(C/L) sin(ωt)

so that,  sin(ωt) = 1 )

I(t) = V₀√(C/L)

On putting the value in above equation,

I(t) = 50V × √( ( 16 × 10⁻¹² F ) / ( 40 × 10⁻³ H ) )

I(t) = 50 × 0.00008

I(t) = 0.0004 A

I(t) = 0.4 mA

Therefore, the inductor current would be 0.4 mA.

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The magnitude of the rock's acceleration half-way between two planets is 1.086 m/s².

The given parameters;

   mass of planet, A = 3M

   radius of the planet A, = R

   mass of planet B, = 4M

   radius of planet B, = 2R

   distance between the two planets, r = 8R

The gravitational force half-way (4R) between the two planets is calculated from Newton's universal gravitational law as follows;

SEE IMAGE 1

The magnitude of the rock's acceleration is calculated from Newton's second law of motion as follows;

SEE IMG 2

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Answer:

588 J

Explanation:

P.E = mgh

      = 6 * 9.8 * 10

     = 588 J

if g value is rounded and taken as 10 then answer is 600 J.

The Once-ler in Dr. Seuss's "The Lorax" found the natural resource of Truffula trees.

In the story, the Once-ler discovers a lush forest filled with Truffula trees, which he chops down to produce a product called Thneeds. As he becomes more successful, he builds a factory and hires more workers to chop down more trees, causing widespread environmental destruction.

The natural resource that the Once-ler finds is the Truffula trees, which he uses to create his product. The Truffula trees are a fictional resource that represent the real-life issue of deforestation and the destruction of natural habitats. The story highlights the importance of environmental conservation and the consequences of exploiting natural resources without regard for the long-term effects on the environment.

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Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

the real answer is

O metals and nonmetals, electrons transferrednonmetals and metals, electrons shared