Describe a time when an illustration would be helpful in everyday activities
What is the name of the group of elements that are human-made and do not occur in nature?
The correct answer is Actinides.
the property of a moving object to continue moving is what galileo called
A. velocity
B. speed
C. accelerating
D. intertia
E. direction
When you turn on a battery-powered flashlight, you transform
A. heat energy into light and chemical energy.
B. chemical energy into electrical energy and light.
C. heat energy into chemical energy and light.
D. electrical energy and light energy into chemical energy.
Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen.
true or false
Which organelle is most like a factory delivery driver?
A: lysosome
B: endoplasmic reticulum
C: cytoplasm
D: nucleus
correct answer is B: endoplasmic reticulum
What is endoplasmic reticulum ?Endoplasmic reticulum is a network of membrane inside a cell through which proteins and other molecule move .
The endoplasmic reticulum is like factory conveyer belt . It helps to transport material within the cell . It provide rote to deliver drugs bypassing the acid pH , hydrolytic environment of the lysosome. It synthesis and transports , protein folding , lipid ,carbohydrate metabolism and calcium storage .
correct answer is B: endoplasmic reticulum
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An upward force is applied to a 6.0–kilogram box. This force displaces the box upward by 10.00 meters. What is the work done by the force on the box?
Answer:
not A. 6.0x10^1 on clever/plato
Explanation:
got it wrong
A car manufacturer wants to change its car’s design to increase the car’s acceleration. Which changes should the engineers consider making to the design?
increase the force that the engine provides
decrease the force that the engine provides
increase the mass of the car
decrease the mass of the car
increase the top velocity the car can travel
decrease the top velocity the car can travel
Answer:
a and d
Explanation:
A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 2.50 m/s^2. (a.) What is the acceleration of the bolt relative to the train car? (b.) What is the acceleration of the bolt relative to the earth?
The bolt's acceleration relative to the train car is 0 m/s², and relative to the Earth, it has a horizontal component of 2.50 m/s² and a vertical component of 9.81 m/s².
Explanation:The student is asking a physics question related to relative acceleration. (a) The acceleration of the bolt relative to the train car is 0 m/s² since it was initially at rest with respect to the train car before dropping. (b) The acceleration of the bolt relative to the Earth combines the acceleration due to gravity and the acceleration of the train. This results in a compound acceleration where the horizontal component is 2.50 m/s² (train's acceleration) and the vertical component is 9.81 m/s² (gravity's acceleration).
a 1000 kg car traveling at 30 m/s suddenly stops in 5 seconds. how much force was used to stop the car?
To stop a 1000 kg car traveling at 30 m/s in 5 seconds, a force of 6000 N is required, calculated using Newton's second law of motion. The negative sign indicates deceleration.
Calculating the Force to Stop a Car
To determine the force needed to stop a 1000 kg car traveling at 30 m/s in 5 seconds, we use the formula derived from Newton's second law of motion: Force (F) = mass (m) x acceleration (a).
Step-by-Step Calculation:
Calculate the acceleration (a): Since the car comes to a stop, the final velocity (v) is 0. The initial velocity (u) is 30 m/s, and the time (t) is 5 seconds. Using the formula for acceleration: a = (v - u)/t:
a = (0 - 30 m/s) / 5 s = -6 m/s²
Calculate the force (F): Using the mass of the car (m = 1000 kg) and the acceleration (a = -6 m/s²), we apply Newton's second law:
F = m * a = 1000 kg * (-6 m/s²) = -6000 N
The negative sign indicates that the force is acting in the direction opposite to the car's motion (deceleration). The magnitude of the force is 6000 N.
What are the properties of ionic compounds?
In the water cycle, water vapor evaporates into the atmosphere and forms clouds through condensation. What happens in the atmosphere to the water in order for the clouds to form?
A) Water drops mix with air pollution to form clouds.
B) The evaporated water warms up and moves closer together.
C) The evaporated water cools and drops get closer together.
D) The sun heats the evaporated water and the water drops move faster.
The evaporated water cools and drops get closer together happens in the atmosphere to the water in order for the clouds to form.
What is water cycle?The continual flow of water from the earth's surface to the atmosphere and back to the ground is known as the water cycle, or hydrologic cycle. It is a never-ending process. As a result, it lacks a beginning and an end. As a result, water has been in motion on earth since the planet's formation. In the process, water transitions between the solid, liquid, and gas phases. The water cycle is aided by a number of elements, including the sun and air currents, to mention a few.
Water from wells, lakes, ponds, the sea, rivers, and many other sources evaporates throughout the daytime in the presence of sunshine, and this water vapor rises with the heated air. The air cools as it rises, causing water vapor to condense into tiny droplets that eventually become clouds.
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Which formula can be used to find the tangential speed of an orbiting object?
Calculate the weight(force of gravity) of a 10 kg child.
A. 10 N
B. 98 kg
C. 10 kg
D. 98 N
The weight(force of gravity) of the child is: D. 98 Newton.
Given the following data:
Mass of child = 10 kgWe know that the acceleration due to gravity (a) of an object on planet Earth is equal to 9.8 meter per seconds square.
To calculate the weight(force of gravity) of the child:
Mathematically, the weight(force of gravity) of an object or body is calculated by using the following formula;
[tex]Weight = mg[/tex]
Where:
m represents the mass of an object. g is the acceleration due to gravity.
Substituting the given parameters into the formula, we have;
[tex]Weight = 10[/tex] × [tex]9.8[/tex]
Weight(force of gravity) = 98 Newton
Therefore, the weight(force of gravity) of the child is 98 Newton.
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Is NaCH an element? Why or why not?
Gravitron can be weakened by explaining the difference between distance and displacement. What is the difference?
Final answer:
Distance is a scalar quantity denoting the total path length traveled, while displacement is a vector quantity signifying the change in position in a specific direction from start to end point.
Explanation:
The difference between distance and displacement lies in their definitions. Distance refers to the total length of the path traveled irrespective of direction, and is considered a scalar quantity because it only has magnitude. Conversely, displacement is a vector quantity, which means it has both magnitude and direction. Displacement is defined as the straight line distance in a specific direction from the starting point to the ending point.
For example, if you walk around a track that forms a perfect 400-meter circle and end up at the starting point, your distance traveled would be 400 meters, but your displacement would be zero, as there was no change in your position from start to finish. If, however, you walk a straight line from the start to a point 100 meters away, your distance and your displacement would both be 100 meters, the latter also including the direction from the starting point.
In physics, for calculating work done or gravitational force, it is important to consider displacement rather than just distance, since direction is a vital component of these calculations.
A ball is at rest on the floor of a car moving at a constant velocity. What will happen to the ball if the car swerves suddenly to the left, and why will this happen?
student uses a magnet to move a 0.025 kg metal ball magnet exerts a force of 5N which causes the ball to begin moving what is the accelaration of the ball when it begins to move
Student uses a magnet to move a 0.025 kg metal ball magnet exerts a force of 5 N which causes the ball to begin moving than the acceleration of the ball when it begins to move is 200 m/s².
What is force?A force in physics is an effect that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Given in the question student uses a magnet to move a 0.025 kg metal ball magnet exerts a force of 5 N then the acceleration is given as,
F = ma
a = F/m
a = 5/0.025
a = 200 m/s²
The acceleration of the ball when it begins to move is 200 m/s².
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Who is given credit for recognizing that elements are the basic building blocks of matter? A. John Dalton B. Dmitri Mendeleev C. Niels Bohr D. Charles Darwin
Four football players are running down the field at the same speed. Player 1 weighs 180 lbs and is running toward the south goal, player 2 weighs 200 lbs and is running toward the north goal, player 3 weighs 190 lbs and is running toward the north goal, and player 4 weighs 165 lbs and is running toward the south goal. Which player has the most momentum?
If plants produce oxygen as a result of photosynthesis why aren't oxygen levels continually increasing the atmosphere
Oxygen levels aren't continually increasing in the atmosphere as a result of
animals and humans making use of it.
During photosynthesis, plants manufacture food through the reaction
between carbondioxide(from animals) and water to produce glucose and
oxygen . The oxygen produced is used by animals for cellular respiration
and other metabolic activities.
The oxygen levels isn't increasing but rather it remains slightly constant as a
result of the oxygen being used by animals.
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Final answer:
Oxygen levels in the atmosphere do not continually increase because it is consumed through various processes such as respiration, decomposition, and combustion. It can also react to form ozone or be sequestered by geological activities. The rate of photosynthesis is further limited by factors like temperature and the availability of CO₂.
Explanation:
If plants produce oxygen as a result of photosynthesis, why aren't oxygen levels continually increasing in the atmosphere? The answer lies in the balance of various processes on Earth. While plants do produce oxygen through the process of photosynthesis, there are other processes that consume oxygen and balance out its levels in the atmosphere.
The free oxygen produced by photosynthesis began accumulating in our atmosphere about 2.4 billion years ago. Initially, interactions with Earth's crust and the oceans absorbed much of this oxygen. Over time, life evolved to use oxygen for respiration, which consumes oxygen and produces carbon dioxide. Today, plant and animal respiration, decomposition, and the combustion of organic matter all use oxygen and prevent it from continually accumulating in our atmosphere.
Additionally, the oxygen produced can react with various elements and compounds, such as the formation of ozone in the upper atmosphere, or can be sequestered through the burial of organic matter due to geological activities. This burial of organic carbon helps to remove carbon from the cycle, preventing it from recombining with oxygen to form CO₂.
Moreover, the rate of photosynthesis can be limited by factors such as temperature and the availability of CO₂. Even though some processes can increase photosynthesis, like higher temperatures, if the concentration of CO₂ is not sufficient, the overall rate of photosynthesis will not continue to rise, hence not infinitely increasing the oxygen levels.
What can be found by counting the number of troughs per second in a wave diagram
Answer:
C is the answer
Match the term with the definition.
Match Term Definition
Atom A) a substance that cannot be broken down into a simpler substance
Element B) a tiny piece of matter
Particle C) a unique form of matter in which it can exist
Phase D) the basic unit of an element
In the field of Chemistry, an Atom is a tiny piece of matter, an Element is a substance that cannot be broken down into a simpler substance, a Particle is the basic unit of an element, and a Phase is a unique form of matter in which it can exist.
Explanation:The correct matches for these definitions are as follows:
Atom - B) a tiny piece of matter Element - A) a substance that cannot be broken down into a simpler substance Particle - D) the basic unit of an element Phase - C) a unique form of matter in which it can existThese are basic terms in chemistry and understanding them can help you in your study of matter, its properties, and how it changes.
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What is the result of 1.58 divided by 3.793 written with the correct number of significant figures?
The result of 1.58 divided by 3.793, when rounded to the correct number of significant figures, is 0.417.
Explanation:When calculating 1.58 divided by 3.793 and expressing the answer with the correct number of significant figures, it's important to look at the number of significant figures in both of the numbers we are dividing. The number 1.58 has three significant figures, and the number 3.793 has four significant figures. In division, the rule is that the final answer should be expressed with the same number of significant figures as the number with the least amount of significant figures used in the calculation.
The result of the division is 0.4165877..., but when rounded to three significant figures, the answer is 0.417. This is because we must express our answer with only three significant figures as dictated by the least number of significant figures present in the math problem (which is from 1.58).
Ingrid kicks a football with an initial velocity of 12 m/s at an angle of 45 degrees relative to the ground. The horizontal component of the initial velocity to the nearest tenth is?
Answer:
8.5m/s
Explanation:
Given the initial velocity to be 12m/s at an angle of 45° to the ground. The horizontal component of the velocity can be expressed as U cos (theta) where;
U is the initial velocity of the object
theta is the angle between the initial velocity and the horizontal. Mathematically, Ux = Ucos(theta)
Ux = 12cos45°
Ux = 12×1/√2
Ux = 12×√2/2
Ux = 6√2m/s
Ux = 8.48m/s
Ux = 8.5m/s(to nearest tenth)
Which factors cause kinetic energy to increase?
increases in mass and decreases in velocity
increases in mass and velocity
decreases in mass and velocity
decreases in mass and increases in velocity
Kinetic energy increases with increases in both mass and velocity, with velocity having a more significant impact due to its squared relationship in the kinetic energy formula KE = 0.5 x m x v².
The factors that cause kinetic energy to increase are an increase in mass and an increase in velocity. From the information given, kinetic energy is proportional to the mass of an object and to the square of its velocity, which is represented by the equation KE = 0.5 times m times v². Therefore, if we double the mass of an object, its kinetic energy would double, and if we double its velocity, its kinetic energy would quadruple, demonstrating a much more significant increase in kinetic energy with an increase in velocity. This principle underscores the profound influence of velocity on kinetic energy variations, elucidating the intricate interplay between mass, velocity, and energy manifestations in physical systems.
Oceanography Meteorology Environmental science is an important discipline of Earth and space science that focuses on events in the atmosphere. Scientists of this discipline also research Earth’s changing woodlands sea waves climate . Geology is another discipline of Earth and space science. It examines different types of rocks landmarks constellations to learn about how Earth was formed. Two useful tools that geologists use are a tooth and nail nut and bolt hammer and lens .
A bowling ball collides with a pin and pushes the pin toward the right. Which describes the reaction force?
A.The pin pushes the bowling ball toward the right.
B.The pin pushes the bowling ball toward the left.
C.The bowling ball pulls the pin toward the right.
D.The bowling ball pulls the pin toward the left.
Answer:
B.The pin pushes the bowling ball toward the left.
Explanation:
As stated by Newton's third law:
"When any object A exerts a force on another object B, then object B exerts an equal and opposite force on object B". These two forces are called action and reaction.
In this example, the ball is our object A, while the pin is object B. We are told that the ball exerts a force on the pin, toward the right: therefore, the pin must exerts an equal and opposite force on the ball. So this force will be in the opposite direction, therefore toward the left.
Answer:
It’s B
Explanation:
Hope this helps!
How does the law of conservation of mass apply to this reaction AL +3HCL H2 + ALCL3?
[tex]2 Al + 6 HCl \rightarrow 3 H_2 + 2Al Cl_3[/tex]
Explanation:
In order for the law of conservation of mass to be valid for this reaction, we must balance the atoms of each element so that it is the same in the reactant side and the product side.
In this case, we immediately see that the hydrogen (H) is not balanced: we have 3 on the left and 2 on the right. So, we must put a factor 2 on the [tex]3HCl[/tex] on the left and a factor 3 on the [tex]H_2[/tex] on the right. Now the Cl is no longer balanced (6 on the left and 3 on the right), so we must put a factor 2 in front of [tex]Al Cl_3[/tex]. And to balance the Al, we must add a coefficient 2 in front of the Al on the right.
Summarizing everything, the balanced reaction is:
[tex]2 Al + 6 HCl \rightarrow 3 H_2 + 2Al Cl_3[/tex]
Scientists connect data points on graphs with a dashed line because information between the plotted data is:
1) approximate
2) inferred
3) interpolation
4) all of the above
Answer:
4) all of the above
Explanation:
In numerical analysis through graphs, interpolation is done where in new data points which lie in the range of a set of known data values to find the approximate value which also means to infer an known intermediate value. A dashed line is drawn between the plotted data to estimate the value of the function in between.
Thus, the correct option is (4)