A large block of ice in the shape of a cube has a mass of 109 kg. What is the side
length of the ice cube in meters? Feet? Recall the density of ice is 0.92 g / cm^3 and 1
meter is equivalent to 3.28 feet.

The average atomic mass of element X is approximately 128.44 amu.  The average atomic mass takes into account the relative abundances of the isotopes.

The average atomic mass is calculated by multiplying the mass of each isotope by its abundance and summing up these values. In this case, element X has three isotopes:

¹²⁶X, ¹²⁸X, and ¹³⁰X, with abundances of 22.00%, 34.00%, and 44.00% respectively.

To calculate the average atomic mass, we multiply the mass of each isotope by its abundance and sum up these values. The atomic mass of ¹²⁶X is 126 amu, ¹²⁸X is 128 amu, and ¹³⁰X is 130 amu.

Using the given abundances and atomic masses, we can calculate the average atomic mass as follows:

Average Atomic Mass = (126 amu × 0.22) + (128 amu × 0.34) + (130 amu × 0.44)

                  = 27.72 amu + 43.52 amu + 57.20 amu

                  = 128.44 amu

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Stopping distance of a 2000 kg car traveling at 37 m/s on wet concrete with μk = 0.50 is 141.95 meters.

To solve this problem, we need to use the formula for the stopping distance of a car on a slippery surface:

d = (v² / 2μk g)

where:

v - is the car's initial velocity.

d - is the stopping distance

μk - is the coefficient of kinetic friction between the car's tires and the road surface

g - is the acceleration due to gravity (9.81 m/s²)

Substituting the given values, we get:

d = (37² / (2 * 0.50 * 9.81)) = 141.95 meters

Therefore, the stopping distance of the car is 141.95 meters.

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Complete question:

A 2000 kg car traveling at a speed of 37 m/s skids to a halt on wet concrete where μk = 0.50. What is Stopping distance?

Answer:

its probably f or h for 4 and 5 is answer location

Answer:

See below

Explanation:

4   H      explains the months with the highest bars for both locales

5    B      as the air rises the water vapor condenses and falls as rain on location B

Answer:

Suitable cushioning materials include cotton balls, packing peanuts, bubble wrap or even crumpled paper. The necessary dimensions and quantity of padding depend on the materials used and the height of the drop

Explanation:

Answer:

34kg

Explanation:

Answer:

a=(v-u)/t

Explanation:

a =(11-5)/3

a= 8/3

a= 2.6 m/s

The acceleration of the car is 2 m/s².

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Acceleration is a vector quantity with and SI unit of it is meter/second².

Given parameters:

Initial speed of the car: u = 5 m/s.

Final speed of the car: v = 11 m/s.

Time interval: t = 3 second.

Change is speed = final speed - initial speed

= 11 m/s - 5 m/s

= 6 m/s.

Hence, its acceleration is = change in speed / time interval

= 6/3 m/s²

= 2 m/s².

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For part a).

Horizontally

v=velocity=32 m/s

d=distance=18m

so we use the next formula to calculate the time

we isolate the time

we substitute the data

For the drop distance, we use the next formula

where vi is the initial velocity, g is the gravity and d is the distance

vi=0 m/s

g=9.8 m/s^2

t=0.56 s

b)

drop distance decreases because it will take less time for the baseball to travel to the catcher.

c)

Drop distance would decrease because the gravity is less on the moon and therefore the ball would not fall as fast

a. The hydraulic gradient of the groundwater flow in the area enclosed by the piezometers is 0.00015 m/m.

b. The direction of groundwater flow in the area enclosed by the piezometers is 0.0086 radians or 0.0086 x 180/π = 0.49° East of North (or 0.49° clockwise from North).

a. The hydraulic gradient of the groundwater flow in the area enclosed by the piezometers is 0.00015 m/m

Hydraulic gradient is given by the difference in hydraulic head divided by the distance between two points.

Therefore, hydraulic gradient between Piezometer A and Piezometer B is given by,

GH = (ha - hb)/L1

Where, ha = hydraulic head at Piezometer A = -0.66 mh

b = hydraulic head at Piezometer B = -0.54 m

L1 = distance between Piezometer A and Piezometer B = 800 m

GH = (-0.66 + 0.54)/800m= 0.00015m/m= 150.

b. Direction of Groundwater Flow:

Piezometer C is situated 1600 m East of Piezometer B and 800 m South of Piezometer A.

Therefore, the distance between Piezometer A and Piezometer C can be calculated as,

L2 = √(800² + 1600²)= 1800 m

Then, the hydraulic gradient between Piezometer A and Piezometer C is given by,

GH = (ha - hc)/L2

Where, ha = hydraulic head at Piezometer A = -0.66 mh

c = hydraulic head at Piezometer C = -0.86 mG

H = (-0.66 + 0.86)/1800m= 0.00011m/m= 110

Therefore, the direction of groundwater flow is given by the angle θ as follows,θ = tan-1((h2-h1)/L)

Where, h2 and h1 are hydraulic head at Piezometer B and Piezometer A respectively.

L = distance between Piezometer A and Piezometer B = 800 m

Substituting the values,θ = tan-1((hb - ha)/L)= tan-1((-0.54 + 0.66)/800)= tan-1(0.00015)θ = 0.0086 radians

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Answer:

2. Galaxy

5. Electromagnetic radiation

7. Particle Accelerator

Answer:

Explanation:

The answer is Temperature difference

Answer:

C

Explanation:

is the answer ,..........................

Explanation:

\((k - 273.15) \times \frac{9}{5} + 32 = f \)

\(310 - 273.15 \times \frac{9}{5} + 32 = f\)

\(98.33 = f\)

\(36.85 \times \frac{9}{5} + 32 = f\)

Answer:

98.33 F

Explanation:

Convert to C degrees from 310  K

310 - 273.15 = 36.85 C

convert from 36.85  C  to F degrees

9/5 (36.85) + 32 = 98.33 F degrees  

Given

Charged objects attract neutral objects.

To find

True or false

Explanation

Neutral objects have both positive and negative charges.It attracts any charged particle

Conclusion

The given statement is True

In summary, the observations about determining ages of rocks and fossils are based on scientific principles such as radioactive decay, superposition, and original horizontality.

A scientific principle is a fundamental concept or law that explains how the natural world works. It is a statement based on empirical evidence and repeated observations that is widely accepted by the scientific community as a fundamental truth. Scientific principles provide a framework for understanding and explaining natural phenomena, and they form the basis for scientific research and discovery.

Examples of scientific principles include:

The law of conservation of energy, which states that energy cannot be created or destroyed, only transformed from one form to another.

The theory of evolution, which explains how species change over time through natural selection and genetic variation.

The law of gravity, which explains the attraction between objects with mass and their impact on space-time.

The principle of relativity, which explains how the laws of physics are the same for all observers in uniform motion relative to each other.

Scientific principles are subject to change and refinement as new evidence and discoveries are made, but they provide a reliable foundation for scientific inquiry and understanding.

Here,

1. Observations about determining ages of rocks and fossils:

Scientists use a variety of methods to determine the ages of rocks and fossils, such as radiometric dating, relative dating, and stratigraphy.

Radiometric dating involves measuring the decay of radioactive isotopes in rocks or fossils, which provides an estimate of the time elapsed since the material was last heated or exposed to sunlight.

Relative dating involves comparing the ages of rocks or fossils based on their position in relation to one another.

Stratigraphy involves studying the layers of rock or sedimentary deposits to determine the relative ages of the materials.

2. Explanation based on scientific principles:

Radiometric dating is based on the principle of radioactive decay, which is the spontaneous breakdown of atomic nuclei into smaller particles over time. The rate of decay is constant, which allows scientists to use the amount of remaining radioactive material to estimate the time elapsed since the material was last heated or exposed to sunlight.

Relative dating is based on the principle of superposition, which states that the oldest rocks or fossils are found at the bottom of a sequence, while the youngest rocks or fossils are found at the top. By comparing the ages of rocks or fossils in different layers, scientists can determine their relative ages.

Stratigraphy is based on the principle of original horizontality, which states that sedimentary layers are deposited in horizontal layers. By studying the layers of rock or sedimentary deposits, scientists can determine the relative ages of the materials based on their position.

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Answer:

a) ray horizontal and ray leaves his feet

b) The normal line respect to which the angles are measured,

c) The angle x is the reflected angle

d) virtual image,  right image

Explanation:

a) To complete the rays, you must draw a horizontal ray at the height of the man's head, this ray touches the mirror perpendicularly, therefore it bounces in the same direction.

The other ray leaves his feet and touches the mirror at one point, it is reflected with the same angle, by the law of reflection and reaches the eyes of man, the brain creates an extension of this ray and at the point of the floor creates the image point.

b) The normal line is a line perpendicular to the surface with respect to which the angles are measured,

c) The angle x is the reflected angle, which is equal to the incident angle according to the law of reflection

d) The image is formed by the prolongation of the rays of light, therefore it is a virtual image and as it has the same direction of the man it is a right image

The vertical component of the box's weight is 221.1 N.

The vertical component of the box's weight is the weight of the box acting along the vertical direction of the inclined plane.

Mathematically, the formula for calculating the vertical component of the box's weight is given as;

Wn = mg cosθ

where;

Wn = W cosθ

where;

Wn = 307.4 N x cos(44)

Wn = 221.1 N

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The complete question is below;

You place a box weighing 307.4 N on an inclined plane that makes a 44◦ angle with the horizontal. Find the vertical component of the box's weight.

Explanation:

studying hard is the only thing that could make the educational system better

I think the student when he studying first time then first he want to speak Korean and study hard for that but if he try then only he can be better

Explanation:

and he or she should have interest to study if he or she have interest then only their education will be better

and if he / she didn't have interest on study then we can't do anything........

The main sequence lifetime of a star with a mass of 1.75 solar masses and 8.7 solar luminosities is approximately \(3.0 * 10^1^0\) years.

The main sequence lifetime of a star depends on its mass and luminosity. For a star with a mass of 1.75 solar masses and a luminosity of 8.7 solar luminosities, we can estimate its main sequence lifetime. The main sequence lifetime refers to the time a star spends fusing hydrogen into helium in its core, which is the longest and most stable phase of a star's life.

Using stellar models and calculations based on stellar evolution theory, astronomers have determined that stars with a mass of 1.75 solar masses and a luminosity of 8.7 solar luminosities have a main sequence lifetime of approximately \(3.0 * 10^1^0\) years. This means that the star will spend about 30 billion years in the main sequence phase before undergoing further evolution.

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Answer: This is an example of Newton's third law

Explanation:

ANSWER:

294 N

STEP-BY-STEP EXPLANATION:

We can calculate the weight as follows:

Replacing:

Weight is 294 N

The equation for a cross section of the satellite dish is y² = 4px.

In a parabolic satellite dish, the receiver is placed at the focus of the parabola. The parabola is a symmetrical curve with the property that all incoming parallel rays of light (or radio waves in the case of a satellite dish) reflect off the surface and converge at the focus.

The standard equation for a parabola in Cartesian coordinates is y² = 4px, where (x, y) are the coordinates of any point on the parabola, p is the distance from the vertex (the point where the parabola intersects the axis of symmetry) to the focus, and y² = 4px represents the relationship between the x and y coordinates.

In the context of a satellite dish, the vertex of the parabola is typically located at the origin (0, 0), and the receiver is placed at the focus. Therefore, the equation for a cross section of the satellite dish can be written as y² = 4px, where p represents the distance from the focus to the vertex.

This equation describes the shape of the parabolic reflector of the satellite dish, ensuring that incoming signals parallel to the axis of symmetry are reflected towards the focus where the receiver is positioned.

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Answer: The answer in scientific notation with the unit included is (1 × 10^-3m.)

Explanation:

In the field of physics, when working with too large or too small numbers, such can be expressed with the use of scientific notation. This helps to eliminate huge or ambiguous numbers with significant units. It is written is such a way that the first number is greater than or equal to 1 and less than 10 which is then multiplied by a factor of 10.

Units are symbols that are used to represent a measurement For example the unit of meters is (m).

Converting 1mm to m:

1000millimeters = 1meter

1 millimetre = X

Making X the subject of formula,

X = 1 ×1 /1000

X = 0.001m

Therefore expressing X in scientific notation is

1 × 10^-3meter (m)

Answer:

Explanation:

This problem bothers on the simple harmonic motion of a loaded spring

Given data

mass attached, m= 0-.675 kg

spring constant, k= 72.4 N/m

the period of oscillation can be solved for using the formula bellow

\(T= 2\pi \sqrt{\frac{m}{k} }\)

Substituting the given data into the expression above we have

\(T= 2*3.142\sqrt{\frac{0.675}{72.4} }\\T= 6.284*\sqrt{0.0093 }\\T= 0.6\)

T= 0.6 sec

Answer:

0.607

Explanation:

Trust me

Answer:

Space Science

Explanation:

Answer:

Physical science

Explanation:

Because the main branches of science are Life science, Space science, and Earth science.

The flow of electricity in a certain path is the circuit.

The total resistance of the series circuit having three resistances as 1. 5 ohms, 1. 5 ohms, and 2 ohms is 5 Ω, as 1.5 + 1.5 + 2 = 5.

The sum of all resistances in a series circuit determines the overall resistance. Same current passes through all the resistors kept in a series circuit.  A series circuit, for instance, consists of three bulbs having resistance as: 1. 5 ohms, 1. 5 ohms, and 2 ohms.

The total resistance in the series circuit is given by:

R = R₁ + R₂ + R₃

= 1.5 + 1.5 + 2

= 5 Ω.

Therefore, 5 ohms is the total resistance of a series circuit having three bulbs of respective resistances.

The current in each resistor is the same in a series circuit since the first resistor's output current feeds into the second resistor's input. All of the resistor leads on one side of the resistors are connected together in a parallel circuit, as are all of the leads on the other side.

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Answer:

fire

Explanation:

The combustion of propane (C3H8) formed the products of carbon dioxide and water.

Alkanes are known as saturated straight-chain aliphatic hydrocarbons. They undergo combustion reactions with oxygen. Like other alkanes, Propane exhibits combustion reaction in the same way as other alkanes do.

During combustion reaction, Propane burns in the presence of abundant oxygen to produce water and carbon dioxide. This combustion reaction librates a heat of about 50 MJ/kg.

The equation of the reaction can be shown as:

\(\mathbf{C_3H_8 + 5O_2 \to 3CO_2 + 4H_2O}\)

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Answer:

yes

Explanation:

because when the water is heating up you use more fuel than you do when it is cold

Answer:

105N

Explanation:

force = mass x acceleration

force without the 25N = 40 x 2

= 80N

On top of this, he has to counteract the 25N so the actual force is 80N + 25N which is 105N