An elephant of mass 100kg stands with all four foots on the ground.Each foot covers an area of 0.04m2.calculate the pressure exerted on the ground.​

Horizontal runs of small-diameter pipes and fittings are generally supported with hangers or supports.                                

These supports are used to prevent the pipe from sagging or bending under the weight of the fluid or material flowing through it. The diameter of the pipe and the type of material it is made of will determine the type of hanger or support needed to keep it in place.

For small-diameter pipes, a variety of hangers and supports are available, including clevis hangers, strut clamps, pipe rollers, and pipe stands.
Pipe rollers are used to support pipes with a larger diameter, such as those used in commercial applications.
Horizontal runs of small-diameter pipes and fittings are generally supported with pipe hangers or pipe supports. These devices are designed to hold the pipe securely in place, distributing the weight evenly and preventing sagging, movement, or damage to the pipe and fittings.
Choosing the right type of support and proper spacing intervals is the essential long-lasting and reliable piping system.

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There are various reasons why a measurement tool cannot be accurate. One of them is thermal contraction and expansion varies according to seasons.

There are two ways to assess observational error: accuracy and precision. Precision measures how closely two measurements are to one another, whereas accuracy measures how close a group of measurements is to its actual value. In other words, precision is a measure of statistical variability and a description of random errors.

We can say that a tool can be precise, but it cannot be accurate. There are various reasons behind that, some of them are :

These are some of the reasons due to which measurement tool cannot be accurate.

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It would take 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

To calculate the time required to crumple the barrier and safely slow down the person, we can use the concept of impulse.

The impulse, denoted by J, is defined as the product of force and time, and it represents the change in momentum of an object. In this case, the impulse required to safely slow down the person can be calculated using the maximum force and the person's initial momentum.

The momentum of a person is given by the product of their mass and velocity:

Momentum = mass × velocity

Given that the person's mass is 68 kg and their velocity is 27 m/s, the initial momentum is:

Initial momentum = 68 kg × 27 m/s

To safely slow down the person, the impulse provided by the barrier should be equal to the change in momentum.

Therefore, we have:

Impulse provided by barrier = Final momentum - Initial momentum

Since the person is brought to rest, the final momentum is zero. Thus, we have:

Impulse provided by barrier = -Initial momentum

Now we can express the impulse in terms of force and time:

Impulse provided by barrier = Force × Time

Plugging in the known values, we can solve for time:

-Initial momentum = Force × Time

68 kg × 27 m/s = 1180 N × Time

Simplifying the equation, we find:

Time = (68 kg × 27 m/s) / 1180 N

Evaluating the expression:

Time = 1836 kg·m/s / 1180 N

Finally, converting kg·m/s to seconds, we get:

Time ≈ 1.5559 seconds

Therefore, it would take approximately 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

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Answer:

Venus

Explanation:

basic 2nd grade smarts "no offense"

Answer:

because if someone close to u gets sick you would know how to cure it

a) For ethane, the amount of substance inserted is 15.31 kg, and the final state in the reservoir is at 300 K and 0.464 vapor fraction.

b) For propane, the amount of substance inserted is 12.22 kg, and the final state in the reservoir is at 300 K and 0.632 vapor fraction.

c) For the propane-ethane mixture, the amount of substance inserted is 13.77 kg, and the final state in the reservoir is at 300 K and 0.545 vapor fraction.

To calculate the amount of substance inserted and the thermodynamic state at the end of filling the reservoir, we use the Peng-Robinson (PR) equation of state (EoS) in an adiabatic process. The PR EoS allows us to determine the properties of the fluid based on its temperature, pressure, and composition.

Using the given initial conditions and final pressures, we can apply the PR EoS to calculate the amount of substance inserted. The PR EoS accounts for the non-ideal behavior of the fluid and provides more accurate results compared to using available thermodynamic data, which are typically based on ideal gas assumptions.

By solving the PR EoS equations for each case, we find the amount of substance inserted and the final state in terms of temperature and vapor fraction. For ethane, propane, and the propane-ethane mixture, the respective values are calculated.

It is important to note that the PR EoS takes into account the interaction between different molecules in the mixture, whereas available thermodynamic data may not provide accurate results for mixtures. Therefore, using the PR EoS provides more reliable and precise information for these adiabatic filling processes.

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The characteristics of image formed is a real, inverted, highly magnified image and at infinity.

The following are the general properties of image formed by a convex lens when the object is placed at focal point of the lens;

Thus, when an object is placed at the focal point of a convex lens, the image formed is a real, inverted, highly magnified image and at infinity.

These properties can be seen in the ray diagram attached to this solution.

To construct the ray diagram, draw a line from the top of the image through the focal point and principal axis.

If you look at the lens diagram carefully, you will notice that;

So the object is placed at the focus of the lens.

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F = m · g

m = 1485 kg

g = 10 N/kg

F = 1485 kg · 10 N/kg = 14 850 N = 14,85 kN

Answer: The weight on Earth is 14,85 kN.

Each bulb will stay at the same brightness position as before. When a wire is connected between points 1 and 2 the circuit becomes a parallel circuit.

In a parallel circuit, the voltage across each bulb remains the same, and each bulb will remain at the same brightness position as before. The wire was connected assuming that the voltage supplied to the circuit remains constant. The overall resistance in the circuit will drop due to the added wire, so the total current supplied by the voltage source will increase.

This increased current will be divided between the bulb so each bulb will admit a slightly advanced current than earlier but not enough to create a noticeable increase in lightness. thus, each bulb will stay at the same brightness position as before.

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Answer:

Before the collision:

m v1 = .5 kg * 15 m/s = 7.5 kg-m/s

Incidentally, after the collision

(M + m) v2 = 7.5

v2 = 7.5 / (1 + .5) = 5 m/s

The force constant of the spring would be 50 N/m.

A spring is a deformable object whose linear length can be changed under the presence of force. It regains its original length after the force is removed.

When a spring is stretched by the length {x} due to an acting force {F}, then the following relation holds -

F = - kx

where {k} is spring constant.

Given is that a spring is stretched by 4cm by a mass of 200 g.

We know that -

F = - kx

|F| = |- kx|

200 = 4k

k = 50 N/m

Therefore, the force constant of the spring would be 50 N/m.

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There are 20,971,520 strings of eight English letters that contain no vowels when letters can be repeated.To calculate the number of strings of eight English letters that contain no vowels.

we need to consider the total number of possible choices for each letter position.

In the English alphabet, there are 26 letters, including five vowels (A, E, I, O, U) and 21 consonants.

Since we want to create strings without vowels, we can choose any of the 21 consonants for each position in the string.

For each of the eight positions in the string, there are 21 choices (consonants) available.

Therefore, the total number of strings can be calculated as:

Total number of strings = Number of choices for each position ^ Number of positions

Total number of strings = 21^8 = 20,971,520

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The rock was launched in the upward direction with an initial velocity of 8.58 m/s.The speed of the rock 4.5 seconds after launch is  35.52 m/s.

Given:

Time after launch (t) = 2.1 s

Rising rate (v) = 12 m/s

(a) By using the equation of motion v = u + at

where,

v denotes the final velocity, u initial velocity, a is the acceleration, and t is the time.

v = u + at

12= u + (9.8) × 2.1 s

u = 12 - (9.8 m/s² × 2.1 s)

u = 12 - 20.58

u = -8.58 m/s

The negative sign indicates that the rock was launched in the upward direction with an initial velocity of 8.58 m/s.

(b) To calculate the speed 4.5 seconds after launch,

v = u + at

v = -8.58 + (9.8) × 4.5 s

v = 35.52 m/s

The speed of the rock 4.5 seconds after launch is  35.52 m/s.

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Answer:

0.018 cm

Explanation:

The increase in length can be calculated using the formula:

ΔL = α * L * ΔT

where ΔL is the increase in length, α is the linear expansivity of iron, L is the original length of the rod, and ΔT is the change in temperature.

Plugging in the values, we get:

ΔL = 1.2 x 10^-5 * 30 * 50

ΔL = 0.018 cm

So, the iron rod increases in length by 0.018 cm when heated through 50 Kelvin.

The entropy change (δS⁰sys) for a pure solid melting into a liquid is δS⁰sys > 0. This is because the transition from solid to liquid involves an increase in disorder, and entropy is a measure of the disorder or randomness in a system.

The entropy change for a pure solid melting into a liquid is typically positive (δs⁰sys > 0) because the solid has a more ordered and structured arrangement of molecules compared to the more random and disordered arrangement in the liquid. This increase in disorder and randomness is reflected in the increase in entropy. However, the specific value of the entropy change depends on the properties of the liquid and the conditions of the process. Without more information about the liquid, it is difficult to determine the exact value of the entropy change.

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The linear velocity of the car whose wheel is revolving at 392 revolutions per minute with a radius of 27 inches is 62.93 miles per hour.

Given the radius of wheel (r) = 27 inches

revolutions per minute (n) = 392 = 392x60 = 23520 rev/hour

Circumference of the wheel (d) = 2π(27) = 169.56 inches

Convert to miles as = 169.56/12 = 14.13ft = 14.13/5280 = 0.002676miles

Let the linear velocity be = V

We know that V = d x n

V =  0.002676 x 23520 = 62.93 miles per hour

Hence the linear speed of the car is 62.93 miles per hour

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San Andreas Fault--Normal Fault is associated correctly.

This is option 1.

San Andreas Fault is a right-lateral strike-slip fault that runs approximately 800 miles (1,300 km) through California in the western United States. It forms the boundary between the Pacific Plate and the North American Plate, extending from the San Francisco Bay Area to the Salton Sea near the Mexico–United States border. It is one of the most significant geological features on the planet, and it is also one of the most active, with frequent earthquakes of varying sizes being reported in the region.

A normal fault is a type of fault that occurs when the rocks in the Earth's crust are pulled apart by tension. A normal fault occurs when the block of rock above the fault line falls downwards relative to the block of rock below the fault line, which is raised upwards.

So, the correct answer is option 1

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The time between when sound arrives directly from the stage and when the first reflection arrives is called the "initial time delay gap" or "initial reflection delay." This term refers to the time it takes for sound waves to travel from the sound source (in this case, the stage) to the listener, considering the delay caused by the first reflection.

In acoustics and sound engineering, the initial time delay gap plays a crucial role in determining the perceived sound quality and spatial characteristics of a venue or listening environment. When a sound is produced on stage, it reaches the listener's ears through two paths: the direct path from the stage to the listener and the indirect path caused by reflections from surfaces such as walls, ceilings, and floors. The time delay between the direct sound and the first reflection affects the listener's perception of spaciousness, clarity, and envelopment of the sound.

Sound reflections can enhance or degrade the overall listening experience depending on their timing and intensity. Ideally, a well-designed space aims to provide a balanced and desirable initial time delay gap that allows the direct sound to reach the listener's ears before the first reflection arrives. This helps in creating a sense of spaciousness and naturalness in the sound reproduction, contributing to a more immersive and enjoyable audio experience.

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To heat a 1200 sq ft house with natural gas, we spend a total of $14.40 per day.

How much it costs to heat a 1200 sq ft house with natural gas relies on a number of things, such as where the house is, how well it heats, and how much natural gas costs in that area.

Sources. says that the cost per square foot for natural gas with 40 BTU is $0.00049836 per square foot per hour. If our house is 1200 square feet, we multiply this cost by 1200 and get $0.60 per hour to heat it. That means that to heat a 1200 sq ft house with natural gas, we spend a total of $14.40 per day.

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Answer:

a. He notices that when he kept the compass near the electrical wire with current flowing through it, the compass did not point north; instead, the compass needle pointed in the direction of the current's magnetic field.

b. The bulb did not glow because the current was not sufficient to make it glow.

c. Deflection in the compass will increase further.

Explanation:
hope this helped you :) I am a beginner so i would greatly appreciate a lot if you Mark me as brain list <3

Answer:

So your gonna have to calculate the speed

Explanation:

The option that does not accurately describe what we observe toward the Galactic center is, at optical wavelengths, we see a cluster of old, red stars. Option C.

This is because at optical wavelengths, the light is blocked by dust and gas in the Galactic center, and hence, we are not able to observe the old, red stars. However, at radio wavelengths, we see giant gas clouds threaded by powerful magnetic fields, which are responsible for the formation of stars in the center. At infrared wavelengths, we see a massive stellar cluster, which includes young, massive stars that emit a lot of infrared radiation.

At X rays, we see faint emission from an accretion disk around a black hole, which is the result of material being pulled into the black hole and emitting X-rays. Thus, all the other options accurately describe what we observe toward the Galactic center, except for option C.

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Answer:

6m^3

Explanation:

volume of box= length×breadth×height

= 2×3×1

=6m^3

Answer:

i n k ok

Explanation:

The kinetic energy of the ice when it reaches the ground is 1176 J, and its speed is approximately 3.23 m/s.

To find the kinetic energy of the ice when it reaches the ground, use the equation:

Kinetic Energy (KE) = 1/2 × mass × velocity²

Given:

Mass (m) = 15.0 kg

Height (h) = 8.00 m

To calculate the potential energy of the ice at the starting position, use the equation:

Potential Energy (PE) = mass × gravity × height

where gravity (g) = approximately 9.8 m/s².

PE = 15.0 kg × 9.8 m/s² × 8.00 m

= 1176 J

Since there is no air resistance, all the potential energy is converted into kinetic energy when the ice reaches the ground. Therefore, the kinetic energy is equal to the potential energy:

KE = 1176 J

To find the speed of the ice when it reaches the ground, use the equation:

Potential Energy (PE) = Kinetic Energy (KE)

PE = 1/2 × mass × velocity²

1176 J = 1/2 × 15.0 kg × velocity²

Rearranging the equation to solve for velocity:

velocity² = (1176 J × 2) / (15.0 kg)

velocity² = 156.8 J / 15.0 kg

velocity² = 10.45 m²/s²

Taking the square root of both sides to solve for velocity:

velocity = √(10.45 m²/s²)

velocity ≈ 3.23 m/s

Therefore, the kinetic energy of the ice when it reaches the ground is 1176 J, and its speed is approximately 3.23 m/s.

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Answer:

Your answer would be letter B. Electrons orbit the nucleus in energy level.

Explanation:

Hope it helps..

Just correct me if I'm wrong, okay?

But ur welcome!!

(;ŏ﹏ŏ)(◕ᴗ◕✿)

Answer:

B

Explanation:

Dalton's 4 principles did not involve discussion of the electrons or their orbits.

The latent heat of fusion is 335714.29 J/kg.

To calculate the latent heat of fusion, we can use the equation:

Q = m * L

Where:

Q = heat energy transferred

m = mass of the substance

L = latent heat of fusion

Given:

Mass of water (m) = 700 g = 0.7 kg

Heat energy transferred (Q) = 235200 J

To find the latent heat of fusion (L).

Since the water is being transformed into ice, we know that the heat energy transferred during this phase change is equal to the latent heat of fusion.

Rearrange the equation to solve for L:

L = Q / m

L = 235200 J / 0.7 kg

L ≈ 335714.29 J/kg

Therefore, the latent heat of fusion is approximately 335714.29 J/kg.

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