How does the presence of minerals in any country determine the prosperity of country

Answers

Answer 1

Answer:

Answer:

The presence of minerals in a country can significantly impact its prosperity in various ways. Minerals, such as precious metals, rare earth elements, and energy resources like coal and oil, can play a pivotal role in a nation's economic development. First, mineral extraction and exportation can generate substantial revenue, contributing to the country's gross domestic product (GDP) and foreign exchange earnings. Additionally, the mining industry often creates job opportunities, fostering employment and income growth. However, the dependence on mineral resources can also lead to economic volatility and resource depletion if not managed sustainably. Moreover, the equitable distribution of wealth generated from mineral resources and effective governance are crucial factors in ensuring that the prosperity derived from these minerals benefits the entire population rather than a select few. Ultimately, the presence of minerals can be a double-edged sword, offering economic opportunities while demanding careful management to achieve lasting prosperity.

Explanation:

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How many electrons does nitrogen (N) need to gain to have a stable outer electron shell?

Answers

it needs 3 electrons to have it stabled

A crane has an arm length of 20m inclined at 30deg with the vertical. It carries a container of mass of 1 ton suspended from the top end of the arm. Find the torque produced by the gravitational force on the container about the point where the arm is fixed to the crane. Given: 1 ton = 1000 kg; neglect the weight of the arm. Hint: take the force and perpendicular distance from the point where the arm is fixed to the crane. Note: Express your answer in whole number. No unit is required for the final answer. Set your calculator in radians.

Answers

To find the torque produced by the gravitational force on the container, we need to calculate the force and perpendicular distance from the point where the arm is fixed to the crane.

First, let's calculate the force exerted by the gravitational force on the container. The weight of the container can be calculated using its mass and the acceleration due to gravity. Given that the mass of the container is 1000 kg (1 ton) and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the force as follows:

Force = mass * acceleration due to gravity
Force = 1000 kg * 9.8 m/s^2
Force = 9800 N

Next, we need to find the perpendicular distance from the point where the arm is fixed to the crane to the line of action of the gravitational force. This distance can be determined using trigonometry.

The perpendicular distance can be calculated using the formula:

Perpendicular distance = arm length * sin(angle)

Given that the arm length is 20 m and the angle with the vertical is 30 degrees, we can calculate the perpendicular distance as follows:

Perpendicular distance = 20 m * sin(30 degrees)
Perpendicular distance = 20 m * 0.5
Perpendicular distance = 10 m

Now, we can calculate the torque using the formula:

Torque = force * perpendicular distance

Substituting the values we calculated earlier:

Torque = 9800 N * 10 m
Torque = 98000 Nm

Therefore, the torque produced by the gravitational force on the container about the point where the arm is fixed to the crane is 98000 Nm.

(a) in an experiment, cold water is poured into a bowl made of an insulating material, the containeris placed in a draught-free room. After several hours, the volume and the temperature of the

water are found to have decreased.

Name and describe the process that causes the decrease in the volume of the water, and

explain why the temperature of the water decreases.

Answers

Answer: Evaporation and heat loss to the surrounding.

Explanation:

The process is known as evaporation.

Evaporation takes place at any temperature but increases with increase in temperature. The molecules of water evaporate, that is, escape into the atmosphere thereby causing the volume of water to reduce.

The temperature decreases due to heat loss from the water into the surrounding. This will cause the temperature of the water to drop.

A train traveling 80.0 kph is blowing its horn as it approaches a railroad crossing. The horn has a frequency of 300.0 Hz. Assume the speed of sound is 331.5 m/s. What is the observed frequency of the horn?395 Hz

281 Hz

322 Hz

Answers

Answer:

322 Hz

Explanation:

v = speed of train approaching the railroad crossing = 80 km/h = 80 x 1000/3600 m/s = 22.22 m/s

V = speed of sound of the horn of train = 331.5 m/s

f = actual frequency of the sound from the horn = 300.0 Hz

f' = observed frequency of the horn

Using Doppler's effect, observed frequency is given as

f' = V f/(V - v)

inserting the values

f' = (331.5) (300.0)/(331.5 - 22.22)

f' = 322 Hz

the answer to your question is 322 hz
h

A 2.0-kilogram mass is located 3.0 meters abovethe surface of Earth. What is the magnitude of
Earth’s gravitational field strength at this
location?
(1) 4.9 N/kg (3) 9.8 N/kg
(2) 2.0 N/kg (4) 20. N/kg

Answers

The correct answer is: Option (3) 9.8 N/kg

Explanation:

According to Newton's Law of Gravitation:

$F_g = (GmM)/(R^2)$ --- (1)

Where G = Gravitational constant = 6.67408 × 10⁻¹¹ m³ kg⁻¹ s⁻²

m = Mass of the body = 2 kg

M = Mass of the Earth = 5.972 × 10²⁴ kg

R = Distance of the object from the center of the Earth = Radius of the Earth + Object's distance from the surface of the Earth = (6371 * 10³) + 3.0 = 6371003 m

Plug in the values in (1):

(1)=> $F_g = (6.67408 * 10^(-11) * 2 * 5.972*10^(24))/((6371003)^2) = 19.63$