The most important thing for determining and object's inertia is....

Apply second equation of kinematics

\(\\ \rm\hookrightarrow s=ut+\dfrac{1}{2}gt^2\)

\(\\ \rm\hookrightarrow s=1/2(10)(3)^2\)

\(\\ \rm\hookrightarrow s=5(9)\)

\(\\ \rm\hookrightarrow s=45m\)

It rises 45m

The temperature of the mixture remained constant at the melting point of ice (0 degrees Celsius) before the ice melted.

The average rate of temperature change per minute was 0 degrees Celsius before the ice melted, and increased to the rate at which heat was being applied after the ice melted.

When ice is in contact with water, it melts at its melting point, which is 0 degrees Celsius. During this phase change, the temperature of the mixture remains constant at 0 degrees Celsius until all the ice has melted.

The average rate of temperature change per minute prior to the ice melting is 0 degrees Celsius, as the temperature remains constant.

After the ice melts, the average rate of temperature change per minute will depend on the rate at which heat is being applied to the mixture, which could vary based on the heat source used and the conditions of the experiment.

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Answer:

i actually giggled at that oml.

Explanation:

that was good

Answer:

1. seasons

2. shorter days

Explanation:

Earth's rotation causes the cycle of sunrise and sunset. If Earth began to spin a little bit faster, the days would become shorter (shorter days).

A galaxy is a large system of stars, stellar remnants, interstellar gas, dust, and dark matter, all held together by gravity. Galaxies come in a variety of shapes and sizes, ranging from small dwarf galaxies with only a few million stars, to massive galaxies with trillions of stars.

The stars in a galaxy are usually organized into various structures, including spiral arms, central bulges, and bars. Galaxies can also contain other astronomical objects, such as planets, moons, asteroids, and comets. The Milky Way is the galaxy in which our solar system resides, and it contains an estimated 100 billion stars.

Here in this question,

Sunrise and sunset on Earth are caused by the rotation of the Earth on its axis.

As the Earth rotates, different parts of the planet are either facing towards or away from the Sun. When a specific location on Earth rotates toward the Sun, it experiences sunrise, and when that location rotates away from the Sun, it experiences sunset. The length of daylight between sunrise and sunset depends on the latitude of the location and the time of year.

Therefore, the correct option for the First Blank: is sunrise and sunset, and for Second Blank: shorter days.

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Answer:

The. Layers. Of. Earth. Has. Different temperatures so. They. Will. Have. Different. Particles

Explanation:

Mantle outerlayer. Etc. Different (can. I. Have. Brainliest. Please

The Python function sb(m, k, n) calculates the period of the fundamental mode of oscillation for an n-story shear building with equal masses (m) and equal stiffnesses (k).

Python function that finds the period of the fundamental mode of oscillation for a shear building:

```python

import math

def sb(m, k, n):

   """Find the period of the fundamental mode of oscillation for an n-story shear building model with all masses equal to m and all stiffnesses equal to k."""

   fm = 2 * math.pi * math.sqrt(m / (k * n))

   return fm

```

You can use this function by providing the values for mass (m), stiffness (k), and the number of stories (n). For example:

```python

mass = 1200  # kg

stiffness = 10 ** 5  # N/m

num_stories = 8

fundamental_period = sb(mass, stiffness, num_stories)

print("The period of the fundamental mode of oscillation is", round(fundamental_period, 2), "s.")

```

This will output: "The period of the fundamental mode of oscillation is 3.73 s" based on the given example of an 8-story shear building with 1200 kg mass and 10^5 N/m stiffness.

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In workplaces with continuous noise, such as mines, the use of protective gear like ear muffs is encouraged to reduce the amount of noise entering workers' ears. This not only protects their hearing but also helps decrease compensation costs associated with hearing-related injuries.

However, it is important to recognize that these protective gears have limitations. Over time and with extensive use, they can become damaged and less effective at reducing noise exposure. Despite the importance of wearing protective gear, some workers may choose to remove their ear muffs due to discomfort or the desire to hear their colleagues more clearly. This poses a challenge as it increases their risk of being exposed to excessive noise levels, which can lead to hearing damage or loss.

To address this issue, employers should focus on providing comfortable and properly fitting protective gear that minimizes discomfort. Additionally, regular training and awareness programs can emphasize the importance of consistent use of protective gear and educate workers about the potential long-term consequences of noise exposure. Encouraging an open dialogue between workers and management can also help address any concerns or misconceptions related to the use of protective gear.

Ultimately, striking a balance between comfort and safety is crucial. Employers should strive to provide effective and comfortable protective gear, while workers need to understand the importance of consistent usage to safeguard their hearing health in noisy work environments.

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9968.4 Joule is the correct answer .

What is speed ?

In physics, "speed" typically refers to the rate at which an object moves or travels through space is measured  in units of distance per unit of time, such as meters per second (m/s) or miles per hour (mph). The speed of an object can be calculated by dividing the distance traveled by the time it took to travel that distance. In addition to speed, physics also considers other concepts related to the motion of objects, such as velocity (which includes the direction of motion), acceleration (the rate of change of velocity), and momentum (the product of an object's mass and velocity.

Weight = w = 14700N

s = 20m

F = 5000N

Friction force = f = 3500N

THETA = 36.9

s = 20m

Work done by Horizontal force = 3998.4*20 = 79968.4 Joule

Work done by frictional force = -3500 *20 =- 70000Joule

Work done by vertical force = 0

Total work done = 79968.4-70000 = 9968.4 Joule

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Answer:A compound is a substance formed when two or more elements are chemically joined.

Explation:Water, salt, and sugar are examples of compounds.

I hope this helps<3

Answer:

40N

Explanation:

Using the newton's second law of motion

\sum Fx = max

Fm - Ff = max

Fm is the applied force

Ff is the frictional force

m is the mas of the cupboard

ax is the acceleration

Since the speed from the lorry is steady, ax = 0m/s^2

Also Ff = 40N

Substitute into  the formula;

Fm - 40 = m(0)

Fm - 40 = 0

Add 40 to both sides

Fm - 40 + 40 = 0 + 40

Fm = 40N

Hence the force with which the man applied to push is 40N

One way to test this hypothesis would be to conduct an experiment in which water is subjected to light sources of varying intensity.

Photosynthesis is a process used by plants and some other organisms to convert light energy, typically from the sun, into chemical energy that can be used to fuel biological processes. During photosynthesis, light energy is absorbed by chlorophyll molecules in the plant's leaves and is then used to convert carbon dioxide and water into sugars and oxygen. This process provides the oxygen we breathe and the food we eat, making it one of the most important processes on Earth.

During the experiment, the rate of hydrolisis can be measured, and this data can then be compared to determine if the energy from the solar source is required for hydrolisis. Additionally, a control experiment can be conducted using light sources that do not contain solar energy, such as a light bulb, to compare to the solar energy experiment. This will allow scientists to determine the effect of the solar energy on the rate of hydrolisis, and confirm or refute the hypothesis.

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Explanation:

The force between two charges is given by :

\(F=\dfrac{kq_1q_2}{r^2}\)

k is electrostatic constant

r is distance between charges

The force between charges is directly proportional to the product of charges and inversely proportional to the square of the distance between them.  

Answer:3

Explanation:

Answer:

I had this awhile ago if I'm not mistaking its A

Answer:

C is the correct answer I believe

Explanation:

Without the Sun , Earth's land, water, and air would all be frozen. Energy is transferred from the sun to Earth via electromagnetic waves, or radiation

Energy is transferred between the Earth's surface and the atmosphere in a variety of ways, including radiation, conduction, and convection.

Given :

Initial velocity, u = 12.5 m/s.

Height of camera, h = 64.3 m.

Acceleration due to gravity, g = 9.8 m/s².

To Find :

How long does it take the camera to reach the ground.

Solution :

By equation of motion :

\(h = ut+\dfrac{gt^2}{2}\)

Putting all given values, we get :

\(12.5t+\dfrac{9.8t^2}{2}=64.3\\\\4.9t^2+12.5t=64.3\)

t = 2.56  and t = −5.116.

Since, time cannot be negative.

t = 2.56 s.

Therefore, time taken is 2.56 s.

Hence, this is the required solution.

Explanation:

guy thy guy thy guy thy guy thy guy thy

Available options are:

A. –4500 N

B. –2500 N

C. 2500 N

D. 4500 N

Answer:

-4500 N

Explanation:

Given that we have F₁ = 3000N? (force of the barge)

the force of the tugboat is F '

To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.

Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.

Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.

Answer:

The answer is -4500 N

Explanation:

1. The atomic mass of the new atom be 243.  Hence, Option (e) is correct.

2. The atomic number of the new atom be 94. Hence, Option (f) is correct.

3. The symbol of the new atom be Pu.  Hence, Option (h) is correct.

4. Alpha decay is demonstrated here. Hence, Option (i) is correct.

A type of radioactive decay known as "alpha decay" occurs when an atomic nucleus emits an alpha particle as it changes or decays into a new atomic nucleus. Here, the newly produced atom will have a four-less atomic mass number and a two-less atomic number. A helium nucleus is another name for the alpha particle that was released. The alpha particles have a positive charge and a sizeable mass.

Ernest Rutherford investigated how radiation is deflected through a magnetic field to distinguish alpha decay from other types of radiation. Given that the particles carry a +2e charge, the alpha decay would deflect a positive charge.

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Since both rats get the tranquilizer and there is no control condition, the experiment is not accurate.

An experiment would be carried out by a scientist in search of data and knowledge. We are aware that in an experiment, the impact of the independent variable on the dependent variable must be determined.

In this instance, the dosage of the medication is the independent variable, and the duration of sleep time for the pet rats is the dependent variable.

Let's notice that a controlled setting is required for every experiment.

We can observe that this experiment lacks a controlled environment, proving that it is not reliable.

A control setting should be introduced, and this experiment would need to be evaluated.

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The half-life of 40K is approximately 1.3 billion years. Given a ratio of 40Ar/40K as 3/1 in a granite sample, we can estimate the age of the sample by understanding the decay process.  Based on the given 40Ar/40K ratio, the age of the sample is approximately 650 million years.

Since the half-life of 40K is 1.3 billion years, this means that after each half-life, half of the 40K atoms will have decayed into 40Ar. Therefore, if the ratio of 40Ar/40K is 3/1, it suggests that three-quarters (or 75%) of the original 40K atoms have decayed into 40Ar.

To determine the age, we can calculate the number of half-lives that have occurred based on the remaining 25% of 40K. Since each half-life is 1.3 billion years, dividing the remaining 25% by 50% (half) gives us 0.5. Thus, the sample has undergone 0.5 half-lives.

Multiplying 0.5 by the half-life of 1.3 billion years gives us an estimated age of 0.65 billion years, or 650 million years, for the granite sample.

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Answer:

Approximately \(1.5\; {\rm s}\).

(Assumptions: \(g = 9.81\; {\rm m\cdot s^{-2}}\); air resistance on the volleyball is negligible.)

Explanation:

Under the assumptions, acceleration of the volleyball would be \(a = (-g) = (-9.81)\; {\rm m\cdot s^{-2}}\) during the entire flight. (This value is negative since the ball is accelerating downwards- toward the ground.)

By the time the volleyball hits the ground, the volleyball would be at a position \(2.0\; {\rm m}\) below where it was launched. In other words, the (vertical) displacement of the volleyball during the entire flight would be \(x = (-2.0)\; {\rm m}\). (Negative since the ball is below where it was launched.)

Apply the SUVAT equation \((v^{2} - u^{2}) = 2\, a\, x\) to find the velocity of the volleyball right before hitting the ground. In this equation:

Rearrange this equation and solve for the velocity right before landing, \(v\). Note that because \(v\!\) is raised to the power of \(2\) in \((v^{2} - u^{2}) = 2\, a\, x\), both \(v = \sqrt{u^{2} + 2\, a\, x}\) and \(v = -\sqrt{u^{2} + 2\, a\, x}\) could satisfy this equation. However, \(v\!\!\) needs to be negative since the volleyball would be travelling downwards before reaching the ground.

Therefore, right before reaching the ground, velocity of the volleyball would be:

\(\begin{aligned} v &= -\sqrt{u^{2} + 2\, a\, x \\ &= -\sqrt{(6.0)^{2} + 2\, (-9.81)\, (-2.0)} \; {\rm m\cdot s^{-1}} \\ &\approx (-8.67)\; {\rm m\cdot s^{-1}}\end{aligned}\).

In other words, velocity of this volleyball has changed from \(u = 6.0\; {\rm m\cdot s^{-1}}\) (upwards) to \(v \approx (-8.67)\; {\rm m\cdot s^{-1}}\) (downwards) during this flight. Divide the change in the velocity \((v - u)\) by the rate of change in velocity \(a = (-9.81)\; {\rm m \cdot s^{-2}}\) to find the duration of this flight:

\(\begin{aligned}t &= \frac{v - u}{a} \\ &\approx \frac{(-8.67) - 6.0}{(-9.81)}\; {\rm s} \\ &\approx 1.5\; {\rm s}\end{aligned}\).

Answer:

r=0.01m

t=0.075n/m

f?

d=2πr

d=2×3.14×0.01

d=0.0628

T=0.075n/m

f=T×d

f= 0.075×0.0628

f=0.00471

A proton and electron separated by 1.0 x 10-10 meters exert 1.0 x 10-47N of gravitational force on each other.

The gravitational force will bring together any two mass-containing objects. The gravitational force is described as attracting because it consistently tries to draw masses together and never tries to push them apart. In reality, you and every other item in the universe are pulling toward one another.

What is the origin of gravity?

All of the mass on Earth is what creates gravity. The cumulative gravitational attraction of all of its mass exerts pressure on all of the body's mass. Your weight is determined by that. Furthermore, your weight would be lower if you were on a planet with a lower mass than Earth.

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Answer:

The correct answer is - 47 years.

Explanation:

The doubling time of the population growth depends on the rate of population growth. The formula for the calculation of the doubling time is :

time (t) = log(N/N0)/r (time)

here,

N0 (initial population) = The population at time t = 0.

N (future population) = The population at time t.

r (rate) = The rate of population change as a function of t

by the formula

t = log (2/1)/0.015

t =  46.666 years or 47 years approx.

The population of each country will become double in 47 years. hence option (A) is correct.

Given data:

The population of Dominican republic is, n = 10.7 million.

The growth rate of Dominican republic is, p = 1.5 %.

The population of Paraguay is, n' = 6.0 million.

The growth rate of Paraguay is, p' = 1.5 %.

The doubling time of the population growth depends on the rate of population growth. The formula for the calculation of the doubling time is given as,

\(t = \dfrac{ln\dfrac{n}{n_{0}}}{p}\)

Here,

\(n\) is the final population and  \(n_{0}\) is the initial population and for doubling the value in future, \(n = 2 \times n_{0}\).

Solving as,

\(t = \dfrac{ln\dfrac{2\times n_{0}}{n_{0}}}{1.5/100}\\\\t \approx 47 \;\rm years\)

Thus, we can conclude the population of each country will become double in 47 years.

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Answer:

7 mm per year

Explanation:

It is given that :

The Pacific plate is moving towards north at = 29 mm per year

The Pacific plate is moving towards west at = 20 mm per year

We have to calculate the total relative motion towards the northwest.

So we have to find the resultant of the two motions.

Since the two movements are perpendicular, therefore the angle between the two motions is 90 degree.

Therefore, finding their resultant,

\(R^2=(29)^2+(20)^2\)

\(R^2=(49)^2\)

R = 7

Therefore, total relative motion towards the northwest is 7 mm per year.

Liquids have different densities, in this case, it's water so if you weigh kilograms of two liquids with different densities, they will weigh different quantities. Solids here block and rocks have much greater packing variability than liquids, so measuring by volume is not practical in terms of reproducibility.

Therefore, even between identical substances, the mass cannot be uniform from unit volume to unit volume.

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Answer:

ok so first ur not a failure and its okay don't be so hard on ur self

Answer:

stove

Explanation:

The stove is the independent variable in this question as it does not depend on anything like other variables such as pot, water, temperature and of cause pasta.

The pot depends on the stove, the water depends on the pot and stove, the pasta depends on the water and its temperature.

Cheers.