How does energy move predictably between a lien water in the air above it
How would the seasons change if the earth were tilted at 90 degrees instead of 23.5?
What are some non examples of prokaryotic cells?
Prokaryotic cells are cells without a nucleus. Non-examples of prokaryotic cells include eukaryotic cells, archaea, green non-sulfur bacteria, and purple non-sulfur bacteria.
Explanation:Prokaryotic cells are cells without a nucleus. They are found in single-celled organisms, such as bacteria. Non-examples of prokaryotic cells include eukaryotic cells, which have a nucleus, and some archaea (Halobacterium), green non-sulfur bacteria, and purple non-sulfur bacteria.
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what is the amplitude and wavelength of the wave shown below? A. Amplitude: 15 cm; wavelength: 150 cm B. Amplitude: 30 cm; wavelength: 150 cm C. Amplitude: 30 cm; wavelength: 200 cm D. Amplitude: 150 cm; wavelength: 30 cm
Answer: The amplitude is 15 cm and wavelength is 150 cm.
Explanation:
The wavelength is the distance between two consecutive compression.
The amplitude is the maximum displacement of the wave.
According to the figure,
This wave is longitudinal wave.
So, The amplitude is 15 cm approximate.
Now, the wave length will be
The wavelength is the distance between two consecutive compression is
[tex]\lambda=d_{2}-d_{1}[/tex]
[tex]\lambda= 150-0[/tex]
[tex]\lambda=150\ cm[/tex]
Hence, The amplitude is 15 cm and wavelength is 150 cm.
The amplitude here is 15 cm, where the wavelength is 150 cm.
What are amplitude and wavelength?The amplitude refers to the height that a wave has, which is measured from the peak of the wave to its lowest point.
Wavelength can be defined as the exact length of a wave from its peak to another peak point.Both amplitude and wavelength are measured as distance (here in centimeters).In conclusion, the amplitude here is 15 cm, where the wavelength is 150 cm.
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If the force of the explosion was focused onto a smaller _____ of the window, then the pressure of the explosion on the window would be even greater.
length
area
volume
density
Answer: The correct answer is Area.
Explanation:
Pressure exerted on an object is defined as the ratio of force applied to the surface area.
Mathematically,
[tex]p=\frac{F}{a}[/tex]
Where, p = pressure
F = force applied
a = surface area
From the above relation, pressure is inversely related to area. As, the pressure increases, the area will be small and vice-versa.
So, when force of the explosion was focused on a smaller area, then the the pressure of the explosion on the window was greater.
Hence, the correct answer is Area.
A 5 N force pushes on the right side of a box. At the same time, a 10 N force pushes on the left side of the box. What happens to the box?
Answer: The box will displace towards right side.
Explanation:
In the given problem, a 5 N force pushes on the right side of a box. At the same time, a 10 N force pushes on the left side of the box. The net force acting on the force is 5 N.
The magnitude of the force acting on the box from the left side is more than the force acting on the box from the right side. The body will displace in that direction in which the magnitude of the applied force is more.
The box is displaced to right by a net force of 5 N.
Therefore, the box will displace towards right side.
explain how does air resistance affect acceleration and speed of an object?
A 1250 kg car is moving down the highway with a velocity of 32.0 m/s when it bumps into the car ahead of it which has a mass of 875 kg and a velocity of 25.0 m/s. After the collision, the two cars stick together. What will be the resulting velocity of the two cars together? How much energy will be lost in this collision?
The resulting velocity of the two cars can be found using the conservation of momentum equation, while the energy lost in the collision can be determined by comparing the initial and final kinetic energies.
Explanation:The resulting velocity of the two cars together can be calculated using the principles of conservation of momentum. The total momentum before the collision is the sum of the individual momenta of the cars. After the collision, the two cars stick together, so their combined mass is the sum of their individual masses. By applying the conservation of momentum equation, we can find the resulting velocity of the two cars together.
To calculate the energy lost in the collision, we need to find the initial kinetic energy of the system and the final kinetic energy of the combined cars. The initial kinetic energy is the sum of the kinetic energies of the individual cars, and the final kinetic energy is the kinetic energy of the combined cars. The difference between the initial and final kinetic energies gives us the energy lost in the collision.
What is the instantaneous speed at 5 seconds? (remember s=d/t)
1 m/s
25 m/s
5 m/s
15 m/s
Answer:
5 seconds is a poor time to ask about, because the speed abruptly changes at exactly 5 seconds.
Up until that time, the speed has been 1 m/s. And then, at exactly 5 seconds, it becomes zero.
_________
It's also a poor question because speed is calculated from the distance covered, but the graph shows displacement, not distance. You can't really tell the distance covered from a displacement graph. For example, if an object happens to be moving in a circle around the place where it started, then the total distance covered keeps increasing, but its displacement is constant.
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Explanation:
will atoms of a given element have the same mass
Answer:
yes
Explanation:
YES GIVE ME BRAINLEST
The image shows the displacement of a motorboat. The data table shows the magnitudes of the components of each displacement vector.
What is the value of Rx?
km
What is the value of Ry?
km
[tex]R_x = A_x + B_x + C_x[/tex]
[tex]A_x[/tex] is negative as the vector is in third quadrant.
[tex]B_x[/tex] is positive as it points in the first quadrant.
[tex]C_x[/tex] is positive as it points in the fourth quadrant.
Hence,
[tex]R_x = -1.6 + 3.9 + 1.2[/tex]
[tex]R_x = 3.5[/tex] km
[tex]R_y = A_y + B_y + C_y[/tex]
[tex]A_y[/tex] is negative as it is in third quadrant.
[tex]B_y[/tex] is positive as it is in first quadrant.
[tex]C_y[/tex] is negative as it is in fourth quadrant.
[tex]R_y = -2.8 + 6.4 - 0.7[/tex]
[tex]R_y = 2.9[/tex] km
A 5.0 kg rock is dropped from the top of a building. The speed of the rock after it has fallen for 2.2 seconds is?
what are the states of matter?put in order from highest energy level to lowest
Predictions about the future based on the position of planets is an example of
Answer: Astrology
Astrology is the study of the position and movement of planets, sun, moon and stars which affect the lives and character of an individual. It claims to predict the future events of the living individual as well as the natural events that may occur in it's surrounding environment. The roots of astrology comes from calendrical systems which can help in predicting the seasonal shifts and to interpret the celestial cycles of the objects in space.
if an object is moving then the magnitude of it _____ cannot be zero
A. speed
B. velocity
C. acceleration
B. A and B
E. A,B, and C
How do you all the earth spheres interact in order to influence weather and climate
Final answer:
Earth's weather and climate are shaped by the intricate interactions among the atmosphere, hydrosphere, lithosphere, and biosphere. Changes in solar radiation, Earth's orbit, atmospheric and ocean circulation, as well as air temperature and precipitation patterns, are all factors that contribute to these dynamic systems.
Explanation:
Interaction of Earth's Spheres Influencing Weather and Climate
The interactions among Earth's spheres - the atmosphere, hydrosphere, lithosphere, and biosphere - are fundamental in shaping our planet's weather and climate. The hydrosphere plays a critical role in weather patterns through the water cycle, which involves the evaporation of water, its journey through the atmosphere, and its return to Earth as precipitation. Variations in solar radiation, influenced by Earth's rotation, orbital changes, and Milankovitch cycles, contribute to climate patterns and can cause significant changes over time.
Scientific disciplines such as meteorology, climatology, and atmospheric science integrate chemical principles to understand and predict weather. Meteorologists analyze air pressure, temperature, and other factors to create short-term forecasts, crucial for safety and economic planning. On a larger scale, the movement of continents over millions of years affects ocean and atmospheric circulation, thus influencing long-term climate evolution. Additionally, variations in the Sun's energy and Earth's orbital patterns can lead to warming or cooling trends, impacting global climate systems.
Temperature and precipitation are directly affected by climate change. Increased temperatures lead to more evaporation and a higher capacity for the atmosphere to hold water vapor, which can result in altered precipitation patterns. This complex interplay between Earth's systems defines the intricate relationship between weather and climate.
As a car skids to a stop, friction transforms kinetic energy to...
A rock is thrown horizontally at a speed of 5.0 m/s from the top of a cliff 64.7 m high. The rock hits the ground 18.0 m from the base of the cliff. How would this distance change if the rock was thrown at 10.0 m/s?
Sample Response: If the rock was thrown at 10.0 m/s, the rock would land twice as far from the cliff as it did previously.
Explanation:
who are a congressional representative's Constituents
A congressional representative's constituents are the people whom they are elected to represent. The representatives' interactions with their constituents can be based on a delegate or trustee approach, where either they enact the wishes of their constituents or make decisions using their judgment while bearing their constituents' interests in mind. The task of effectively balancing their constituents' needs and concerns with the larger national landscape is a central facet of a representative's role.
Explanation:A congressional representative's constituents are the people whom they are elected to represent in their district. This relationship between the representatives and their constituents takes various forms, including the delegate model of representation, where legislators act based on the preferences of their constituents. The representative may share demographic and other characteristics with their constituents, allowing them to better understand and address the specific needs and concerns of their community.
The relationship between a representative and the constituents can be influenced by multiple factors, including whether the representatives view themselves as delegates or trustees. In the delegate model, representatives see their role as enacting the wishes of their constituents, which they must identify and then vote accordingly. Representatives can also adopt the approach of 'trustee,' where they use their judgment to make decisions on behalf of their constituents. Either way, a representative's paramount duty is to address the concerns of their constituents.
However, the needs of the constituents must be balanced with the demands of the larger political landscape, which can cause tensions. The ability of a representative to maintain this balance - of being part of a national legislative body and being a representative of a smaller community - is crucial to their success in their role. Nonetheless, every member of a legislature has an obligation to their constituents, and their efforts to serve them form a significant part of their duties.
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A student practicing for a cross country meet runs 250 m in 30 s. What is her average speed?
When a student practicing for a cross country meet runs 250 m in 30 s, then her average speed would be 8.33 m/s.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
The mathematical expression for speed is given by
speed = total distance /Total time
As given in the problem a student practicing for a cross country meet runs 250 m in 30 s,
Total distance covered by the student while running = 250 m
Time is taken by the student while running = 30 seconds,
Her average speed = 250/30
=8.33 m/s.
Thus. her average speed would be 8.33 m/s.
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an airplane travels from St. Louis to Portland, Oregon in 4.33 hours. If the distance traveled is 2742 km what is the airplanes average speed?
Choose all that apply. Solids, liquids, and gases can be distinguished by their:
molecular weight
shape
temperature
kinetic energy
mass
density
Solids, liquids, and gases can be distinguished by their shape, density, and kinetic energy, while molecular weight and mass remain consistent across the states of matter.
Solids, liquids, and gases, the three common phases of matter, can be distinguished by several properties. Solids have a definite shape and volume. Liquids have a definite volume but adapt to the shape of their containers. Gases, on the other hand, have neither a definite shape nor a specific volume, as they expand to fill their containers.
The characteristics that distinguish these states include:
Shape: Solids have a fixed shape, while liquids take the shape of their container and gases have no fixed shape.Density: Typically, solids are denser than liquids, which are in turn denser than gases, although there are exceptions when substances change phase.Kinetic Energy: Gases have the highest kinetic energy due to the fast movement of their molecules, while solids have the least.The properties that do not generally differ across the different states of matter include molecular weight and mass. A substance's mass or molecular weight remains consistent regardless of whether it is a solid, liquid, or gas.
A student is trying to calculate the density of a can. He already knows the mass, but he needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the can?
To calculate the density of a can, the student must first determine its volume, which can be done using the formula for the volume of a cylinder V = πr²h or through displacement methods. Once the volume is known, density is calculated by dividing the mass by the volume.
Explanation:To calculate the density of a can, the student needs to determine its volume. The volume of a cylindrical can be calculated using the formula for the volume of a cylinder, which is π (pi) times the radius squared times the height (V = πr²h). The student already knows the mass of the can, so once the volume is calculated, density can be found by dividing the mass by the volume
The formula provided (D = m/V) can also be transformed to solve for volume, providing another formula: Volume (V) = Mass (m) divided by Density (D).
In cases where the volume needs to be found through displacement, the formula V = m/p (where p is the density) is used, such as determining the volume of a coin by the water displacement method.
Doug is doing work. Without knowing exactly what he is doing, which can be said about the work he is doing? Energy is transferred; Energy is increased; Energy is decreased; Energy is unchanged;
The answer is Energy is transferred! I just took the test and your answer was Energy is decreased and that was not correct!
A 2000kg suv accelerates from rest at a rate of 3.00m/s^2. The total amount of force resisting its motion 1500N. How much force is applied to the suvs tires by the ground to make it accelerate?
Final answer:
To find the force applied to the SUV's tires by the ground, we use Newton's second law of motion and consider the total resisting force. The calculated force is 7500 N.
Explanation:
To determine the force applied to the SUV's tires by the ground to make it accelerate, we will use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = m × a).
Given that the SUV has a mass (m) of 2000 kg and an acceleration (a) of 3.00 m/s², we can calculate the force required to accelerate the SUV. However, we must also consider the total amount of force resisting its motion, which is given as 1500 N.
The net force ([tex]F_{net}[/tex]) acting on the SUV is the difference between the applied force ([tex]F_{applied}[/tex]) and the resistance force ([tex]F_{resistance}[/tex]).
Using the formula:
[tex]F_{net}[/tex] = m × a[tex]F_{net}[/tex] = [tex]F_{applied}[/tex] - [tex]F_{resistance}[/tex]We can substitute the given values and calculate the applied force:
[tex]F_{net}[/tex] = (2000 kg) × (3.00 m/s²) = 6000 N
Now, we can solve for the applied force:
[tex]F_{applied}[/tex] = [tex]F_{net}[/tex] + [tex]F_{resistance}[/tex]
[tex]F_{applied}[/tex] = 6000 N + 1500 N = 7500 N
Therefore, the force applied to the SUV's tires by the ground to make it accelerate is 7500 N.
Heather puts a straw into glass of water. She notices that when she looks through the glass and the water from the side, the straw appears to be broken. Which term best explains why the straw looks like it broken? A. Absortion B. Refraction C. Scattering D. Transmission
Answer:
Refraction
Explanation:
A dancer lifts his partner above his head with an acceleration of 2.5 m/s2. The dancer exerts a force of 200 N. What is the mass of the partner?
How would you describe the relationship between the mass of a car and its kinetic energy? A) As the mass of a car increases, its kinetic energy increases. B) As the mass of a car increases, its kinetic energy decreases. C) As the mass of a car decreases, its kinetic energy increases. D) There is no clear relationship between mass and kinetic energy.
Answer:
The answer is A.As the mass of a car increases, it's kinetic energy increases.
Explanation:
what is the volume of 325 g of metal with a density of 9.0 g/cm3
The volume of 325 g of metal with a density of 9.0 g/cm³ is 36.11cm³
HOW TO CALCULATE VOLUME:
The volume of a substance can be calculated by dividing the mass of the substance by its density as follows:Volume(mL) = mass(g) ÷ density (g/mL)
According to this question, the density of 325g of metal is given as 9.0 g/cm³, hence, the volume can be calculated as follows:Volume = 325g ÷ 9g/cm³
Volume = 36.11cm³
Therefore, the volume of 325 g of metal with a density of 9.0 g/cm³ is 36.11cm³
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How does the law of conservation of mass apply to this reaction Mg+HCL->H2+MgCl2?
Answer :
Law of conservation of mass : It states that the mass of reactant molecules must be equal to the mass of product molecules.
The given unbalanced reaction is,[tex]Mg+HCl\rightarrow H_2+MgCl_2[/tex]
First we have to balance the chemical reaction.
The balanced chemical reaction is,[tex]Mg+2HCl\rightarrow H_2+MgCl_2[/tex]
Now we have to calculate the mass of reactant side molecules and product side molecules.
Mass of reactants = [tex]Mg+2HCl=(24)+2(1+35.5)=97g[/tex]
Mass of products = [tex]H_2+MgCl_2=2(1)+(24+2(35.5))=97g[/tex]
From this we conclude that the mass of reactant is equal to the mass of product.
Answer:
Law of conservation of mass do not apply to this equation.
Explanation:
The law of conservation of mass states that the mass of objects/element before any reaction must be equal to the mass of objects/element after the reaction.
Here in this case –
Mg+HCL->H2+MgCl2
Mass of Mg before reaction = 1
Mass of H before reaction = 1
Mass of Cl before reaction = 1
Mass of Mg after reaction = 1
Mass of H after reaction = 2
Mass of Cl after reaction = 2
Thus it is clear that mass of H and Cl before and after the reaction is not equal and thus law of conservation of mass do not apply to this equation.