The ranking is based on the tilt of the Earth's axis and its orbit around the Sun. The figure at 40°N in June receives the most daylight because it is located at a high latitude during the summer solstice in the Northern Hemisphere. The Earth's axis tilts towards the Sun, resulting in longer days and shorter nights. The figure at 40°S in December receives a moderate amount of daylight as it is located at a lower latitude during the summer solstice in the Southern Hemisphere.
The figure at 40°N in December experiences less daylight because it is located at a high latitude during the winter solstice in the Northern Hemisphere, with shorter days and longer nights. Lastly, the figure at 40°S in June receives the least amount of daylight as it is located at a lower latitude during the winter solstice in the Southern Hemisphere, where the days are shortest and the nights are longest. Based on the information given, the ranking of figures based on the amount of daylight they experience in a 24-hour period, from most to least.
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Rectangular frames are easy to build but can get pulled out of shape. What are two solutions to this problem?
Answer: Rectangular frames are easy to make but can get pulled out of shape. so if the sides are still attached , then the figure formed is parallelogram. useing the given measurement use the formula of a parallelogram.
formula : A = BASE X HEIGHT
Explanation:
Calculate the period of a satellite orbiting the Moon, 91 km above the Moon's surface. Ignore effects of the Earth. The radius of the Moon is 1740 km
The period of a satellite orbiting the Moon, 91 km above the Moon's surface, is approximately 1 hour, 42 minutes, and 47 seconds.
To calculate the period of a satellite orbiting the Moon, we can use Kepler's third law, which states that the square of the period (T) of an orbit is proportional to the cube of the semi-major axis (a) of the orbit.
Convert the given distances to meters:
The radius of the Moon is given as 1740 km. Converting it to meters:
Radius of the Moon (r) = 1740 km = 1740 × 10³ m
The satellite is orbiting at a height of 91 km above the Moon's surface. Converting it to meters:
Radius of the orbit (a) = 1740 km + 91 km = (1740 + 91) × 10³ m
Calculate the semi-major axis of the orbit:
Since the satellite is in a circular orbit, the semi-major axis is equal to the radius of the orbit:
a = (1740 + 91) × 10³ m
Calculate the period of the satellite:
Using Kepler's third law equation, we have:
T² = (4π² / GM) * a³
Where G is the gravitational constant and M is the mass of the Moon.
The gravitational constant G = 6.67430 × 10^(-11) m³/kg/s².
The mass of the Moon M = 7.342 × 10^22 kg.
Substituting these values into the equation, we have:
T² = (4π² / (6.67430 × 10^(-11) × 7.342 × 10^22)) * (1740 + 91) × 10³)^3
Simplifying and taking the square root of both sides, we can calculate the period T.
Calculate the period:
Using a calculator, we find that the period T is approximately 6157.41 seconds.
Converting seconds to hours, minutes, and seconds:
6157.41 seconds ≈ 1 hour, 42 minutes, and 47 seconds.
Therefore, the period of a satellite orbiting the Moon, 91 km above the Moon's surface, is approximately 1 hour, 42 minutes, and 47 seconds.
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Which trait do you think is most important for a boss or supervisor to have?
Answer:
A high EQ (emotional intelligence)
In today's transitioning workplace, having a high EQ is the most important trait of a good boss. Bosses must be able to discern between their own personal beliefs and the thoughts and beliefs of others, and other generations (boomers, Gen X, xennials, millennials and now Gen Z).
Explanation:
hope it helps you
A person standing on the edge of a high cliff throws a rock straight up with an initial velocity of 24.8 m/s . The rock misses the edge of the cliff as it falls back to earth. Calculate the position of the rock 5.66 seconds after it is thrown.
5.66 seconds after it is thrown, the position of the rock is approximately 157.266 meters below the initial position at the edge of the cliff.
To calculate the position of the rock 5.66 seconds after it is thrown, we can use the equations of motion.
First, let's break down the problem into two parts: the upward motion and the downward motion of the rock.
1. Upward motion:
During the upward motion, the acceleration due to gravity acts in the opposite direction of the initial velocity. We can use the equation of motion for displacement:
s₁ = u₁t + (1/2)at²
where s₁ is the displacement, u₁ is the initial velocity, t is the time, and a is the acceleration.
Since the rock is thrown straight up, the initial velocity u₁ is 24.8 m/s, the acceleration a is -9.8 m/s² (taking it as negative due to the opposite direction), and the time t is 5.66 seconds.
Plugging in the values:
s₁ = (24.8 m/s)(5.66 s) + (1/2)(-9.8 m/s²)(5.66 s)²
s₁ = 140.448 m + (-78.633 m)
s₁ = 61.815 m
2. Downward motion:
During the downward motion, the rock is in free fall, so we can use the equation for displacement again:
s₂ = u₂t + (1/2)at²
where s₂ is the displacement, u₂ is the final velocity (which is the negative of the initial velocity due to the change in direction), a is the acceleration due to gravity (taking it as -9.8 m/s²), and t is the time.
Since the rock starts from rest at its highest point during the upward motion, the final velocity u₂ is -24.8 m/s.
Plugging in the values:
s₂ = (-24.8 m/s)(5.66 s) + (1/2)(-9.8 m/s²)(5.66 s)²
s₂ = -140.448 m + (-78.633 m)
s₂ = -219.081 m
To find the total displacement, we sum the upward and downward displacements:
s_total = s₁ + s₂
s_total = 61.815 m + (-219.081 m)
s_total = -157.266 m
Therefore, 5.66 seconds after it is thrown, the position of the rock is approximately 157.266 meters below the initial position at the edge of the cliff.
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A piece of copper weighing 400g is heated to 100°c and quickly transferred to a copper calorimeter of mass 10g containing 100g of liquid of unknown specific heat capacity at 30°c. If the final temperature of the mixture is 50°c, calculate the specific heat capacity of the liquid. (S.H.C of copper is 390J/kg/k)
A piece of copper at 100°C is transferred to a copper calorimeter with a liquid at 30°C. The final temperature is 50°C. By applying the principle of conservation of energy, the specific heat capacity of the liquid is calculated to be approximately 2100 J/kg/°C.
To calculate the specific heat capacity of the liquid, we can apply the principle of conservation of energy. The heat lost by the copper piece will be equal to the heat gained by the liquid and calorimeter.
The heat lost by the copper piece can be calculated using the formula:
Heat lost = Mass of copper × Specific heat capacity of copper × Temperature change
Given:
Mass of copper = 400 g
Specific heat capacity of copper = 390 J/kg/°C (assuming it remains constant)
Temperature change of copper = 100°C - 50°C = 50°C
Heat lost = 400 g × 390 J/kg/°C × 50°C
Heat lost = 7,800,000 J
The heat gained by the liquid and calorimeter can be calculated using the formula:
Heat gained = (Mass of liquid + Mass of calorimeter) × Specific heat capacity of liquid × Temperature change
Given:
Mass of liquid = 100 g
Mass of calorimeter = 10 g
Temperature change of liquid = 50°C - 30°C = 20°C
Heat gained = (100 g + 10 g) × Specific heat capacity of liquid × 20°C
Now, by equating the heat lost and heat gained:
7,800,000 J = (110 g) × Specific heat capacity of liquid × 20°C
Specific heat capacity of liquid = 7,800,000 J / (110 g × 20°C)
Specific heat capacity of liquid ≈ 3545.45 J/kg/°C
Therefore, the specific heat capacity of the liquid is approximately 3545.45 J/kg/°C.
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What is evidence used by Galileo to disprove Aristotle and Ptolemy?
Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe.
Galileo Galilei played a crucial role in challenging the prevailing geocentric model of the universe proposed by Aristotle and supported by Ptolemy. He provided several lines of evidence that effectively disproved their theories and supported the heliocentric model proposed by Nicolaus Copernicus. Some of the key evidence used by Galileo includes:
1. Observations through a telescope: Galileo was one of the first astronomers to use a telescope to observe the heavens. His telescopic observations revealed several important discoveries that contradicted the Aristotelian-Ptolemaic worldview. He observed the phases of Venus, which demonstrated that Venus orbits the Sun and not Earth. He also observed the four largest moons of Jupiter, now known as the Galilean moons, which provided evidence for celestial bodies orbiting a planet other than Earth.
2. Sunspots: Galileo's observations of sunspots provided evidence that the Sun is not a perfect celestial body, as suggested by Aristotle. Sunspots indicated that the Sun has imperfections and undergoes changes, challenging the notion of celestial perfection.
3. Mountains on the Moon: Galileo observed the rugged and uneven surface of the Moon, which contradicted Aristotle's belief in celestial spheres made of perfect, unchanging material. The presence of mountains on the Moon suggested that celestial bodies are subject to the same physical laws as Earth.
4. Phases of Venus: Galileo's observations of the phases of Venus provided direct evidence for the heliocentric model. As Venus orbits the Sun, it goes through phases similar to the Moon, ranging from crescent to full. This observation strongly supported the idea that Venus revolves around the Sun.
These lines of evidence presented by Galileo challenged the Aristotelian-Ptolemaic model, providing support for the heliocentric model and paving the way for a new understanding of the universe. His work marked a significant turning point in the history of science and laid the foundation for modern astronomy.
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2. A 7 kg. Mass is moved across the table at 25 m/sec. What force caused the acceleration?
A 7 kg mass moving across the table at an acceleration of 25 m[tex]/s^2[/tex]requires a force of 175 N.
To determine the force required to cause the acceleration of a 7 kg mass moving across the table at 25[tex]m/s^2[/tex], we can use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration.
Given:
Mass (m) = 7 kg
Acceleration (a) = 25 [tex]m/s^2[/tex]
We can substitute these values into the equation:
Force (F) = mass (m) * acceleration (a)
F = 7 kg * 25 [tex]m/s^2[/tex]
F = 175 kg·[tex]m/s^2[/tex]
Therefore, the force required to cause the acceleration of the 7 kg mass is 175 kg·[tex]m/s^2[/tex].
To understand the calculation, we need to know that force is a measure of how much an object accelerates when a certain amount of mass is acted upon by that force. In this case, the mass of the object is 7 kg, and it is experiencing an acceleration of 25[tex]m/s^2[/tex].
By multiplying the mass and acceleration together, we find that the force required is 175 kg·[tex]m/s^2[/tex]. This unit, also known as a Newton (N), represents the force required to accelerate a 1 kg mass at a rate of 1 [tex]m/s^2[/tex]
In summary, the force required to cause the acceleration of the 7 kg mass across the table at 25 [tex]m/s^2[/tex] is determined to be 175 kg·[tex]m/s^2[/tex]. This calculation follows Newton's second law of motion and shows the relationship between mass, acceleration, and force.
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Explain the light detection technique of photovoltaic detection
Answer:
Photovoltaic detection is a technique that converts light into electrical energy. It is a process that involves the use of a photovoltaic cell, which is made up of semiconductor materials, to generate an electric current when exposed to light.
The photovoltaic cell absorbs the photons of light, which then knock electrons out of their orbits, creating a flow of electricity. The amount of electricity produced is proportional to the intensity of the light. The photovoltaic cell is commonly used in solar panels to generate electricity from sunlight. The efficiency of the photovoltaic cell is dependent on several factors, including the type of semiconductor material used, the purity of the material, and the thickness of the cell.
The photovoltaic cell has many applications, including in solar power generation, telecommunications, and remote sensing. The technique of photovoltaic detection is an important area of research, as it has the potential to provide a clean and renewable source of energy that can help mitigate climate change.
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a vector has a magnitude of 34 meters and an angle of 26 degrees what is the y-component of the vector? (i'd appreciate if anyone could answer this)
The y-component of the vector is approximately 14.67 meters.
To find the y-component of the vector, we need to use trigonometry. Given that the vector has a magnitude of 34 meters and an angle of 26 degrees, we can break down the vector into its x and y components.
Step 1: Identify the known values:
Magnitude of the vector (r) = 34 meters
Angle (θ) = 26 degrees
Step 2: Determine the y-component using trigonometry:
The y-component can be found using the formula:
y = r * sin(θ)
Step 3: Calculate the y-component:
Substituting the known values into the formula:
y = 34 * sin(26 degrees)
y ≈ 14.67 meters
Therefore, the y-component of the vector is approximately 14.67 meters.
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