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.
What is the kinetic energy of a 2 kg snowball thrown through the air at 5 m/s?
Answer:
Kinetic energy of the ball is 25 joules.
Explanation:
Mass of the snowball, m = 2 kg
Speed of the ball, v = 5 m/s
Let E is the kinetic energy of the snowball. The energy possessed due to the motion of an object is called its kinetic energy. Mathematically, it is given by :
[tex]E=\dfrac{1}{2}mv^2[/tex]
[tex]E=\dfrac{1}{2}\times 2\times 5^2[/tex]
E = 25 joules
So, the kinetic energy of ball is 25 joules. Hence, this is the required solution.
what is the speed of a 2.5-kilogram mass after ot has fallen freely from rest through a distance of 12 meters? a) 4.8 m/s b) 15 m/s c) 30. m/s d) 43 m/s
v₀ = initial velocity of the mass = 0 m/s (since the mass falls from rest)
a = acceleration = acceleration due to gravity = 9.8 m/s²
d = vertical distance traveled = 12 m
v = final velocity of the mass
Using the kinematics equation
v² = v₀² + 2 a d
v² = 0² + 2 (9.8) (12)
v² = 235.2
v = √235.2
v = 15 m/s
hence the speed of mass comes out to be
b) 15 m/s
A hooked weight is suspended by two wires. The gravitational force acting on the weight is 1.0N,downward. Is it possible for the two wires to exert forces that have magnitude of 0.60 N and 0.70 N on the hooked weight?
The tension in the wires must be equal to the weight of the hooked weight for it to be in equilibrium, so it is not possible for the two wires to exert forces with magnitudes of 0.60 N and 0.70 N on the hooked weight.
Explanation:The tension in the wires must be equal to the weight of the hooked weight for it to be in equilibrium. Since the gravitational force acting on the weight is 1.0 N downward, the sum of the magnitudes of the tensions on the two wires must also be 1.0 N to cancel out the gravitational force. Therefore, it is not possible for the two wires to exert forces with magnitudes of 0.60 N and 0.70 N on the hooked weight.
Learn more about equilibrium here:https://brainly.com/question/30694482
#SPJ12
Objects in free fall are weightless.
True or False
John Watson’s experiments with Baby Albert showed how classical conditioning could be used to explain?
John Watson's demonstration of classical conditioning with Baby Albert involved pairing a loud noise (UCS) with a white rat (CS) to elicit a fear response (CR) in Albert, which later generalized to similar furry objects.
Explanation:John Watson and Classical ConditioningJohn Watson's experiments with Baby Albert are classic demonstrations of classical conditioning. Watson and his graduate student, Rosalie Rayner, used this method to show how a neutral stimulus, when paired with an unconditioned stimulus, can evoke a conditioned response. In the case of Little Albert, the unconditioned stimulus (UCS) was the loud noise, and the unconditioned response (UCR) was fear from the noise. The conditioned stimulus (CS) became the white rat after it was repeatedly paired with the loud noise. Soon, the mere presence of the white rat evoked the conditioned response (CR), which was fear. Later, stimulus generalization occurred when Little Albert started to fear similar furry objects.
Redshift means stars and galaxies are emitting a color that is shifting toward the red end of the color spectrum. this indicates the light's wavelengths are _____ and less frequent, and the star or galaxy is____?
Answer:
Redshift means stars and galaxies are emitting a color that is shifting toward the red end of the color spectrum. this indicates the light's wavelengths are MORE and less frequent, and the star or galaxy is MOVING AWAY
Explanation:
As we know that by Doppeler's effect of light when source is moving away from the observer then the frequency observed by the observer is given as
[tex]\frac{\Delta \nu}{\nu} = \frac{v}{c}[/tex]
so here on moving away the frequency observed by observer will decrease and hence we can say that the wavelength of light must be increased
So here on increasing the observed wavelength we say it to be shifted towards higher side which means it is red shift
so here correct answer would be
Redshift means stars and galaxies are emitting a color that is shifting toward the red end of the color spectrum. this indicates the light's wavelengths are MORE and less frequent, and the star or galaxy is MOVING AWAY
The baking soda looked like it dissolved in the vinegar. Sarah and Connor watched as the balloon expanded and filled with a gas. Was this a physical or chemical reaction and why? A) chemical - gas produced B) physical - water bottle got hot C) physical - baking soda dissolved D) chemical - baking soda disappeared
Answer: A) chemical - gas produced
Explanation: Physical change is a process in which there is no change in chemical composition of the substance.
Chemical change is a process in which there is a change in chemical composition of the substance.
Chemical process is accompanied by following changes
1. Change in color
2. Absorption or release of energy
3. Production of gas
4. Formation of precipitates.
Thus a chemical reaction is happening on mixing baking soda [tex](NaHCO_3)[/tex] and vinegar [tex](CH_3COOH)[/tex], there is production of [tex]CO_2[/tex] which expanded the balloon.
[tex]NaHCO_3+CH_3COOH\rightarrow CH_3COONa +CO_2(g)+H_2O[/tex]
A mathematical equation that predicts how a physical phenomenon will behave
Final answer:
A mathematical equation predicting physical phenomena is a scientific law, which includes formulas like the Law of Conservation of Energy. Mathematical models and dimensional analysis also play roles in understanding and predicting physical systems.
Explanation:
A mathematical equation that predicts how a physical phenomenon will behave is often referred to as a scientific law. These laws are descriptions, frequently formulated mathematically, which represent the outcomes of repeated experiments or observations within a specific context. For instance, the Law of Conservation of Energy, which is a fundamental concept in physics, can be summarized by a mathematical equation that is crucial for understanding energy transfer and transformation in a closed system.
In the context of physics and engineering, mathematical models are instrumental in outlining physical phenomena using mathematical frameworks like equations and inequalities. Dimensional analysis is one method that utilizes basic principles of dimensions and can help in qualitatively understanding physical systems and predicting quantitative responses to changes in parameters, even with limited detailed knowledge of the system.
What are groups 1, 2, and 3 examples of on the periodic table? Question options: metals nonmetals metalloids noble gases
Conduction is the movement of heat energy because of the collision of...
A. The collision of molecules
B. The repulsion of molecules away from each other
C. Cold inside of large molecules
D. Energy of molecules breaking down
We have that from the Question"Conduction is the movement of heat energy because of the collision of" it can be said that
Conduction is the movement of heat energy because of the collision of of molecules
The collision of molecules Option AFrom the Question we are told
Conduction is the movement of heat energy because of the collision of...
A. The collision of molecules
B. The repulsion of molecules away from each other
C. Cold inside of large molecules
D. Energy of molecules breaking down
Generally
molecules collide with each the at high kinetic energy and this exercise of molecule causes heat as a phenomenon to occur
Therefore
Conduction is the movement of heat energy because of the collision of of molecules
The collision of molecules Option AFor more information on this visit
https://brainly.com/question/22610586?referrer=searchResults
Difference between angle of shear and angle of twist.
Answer:
The angle of shear can be defined as the angle of the deformation that occurs on the sides when the object is exerted upon by shearing stress or deformation force.
The angle of twist can be defined as the angle through which the rotating machine element rotates or twists with respect to its free end. The angle of twist exists because of the torque.
How many positions coordinates are required to identify the position of a system undergoing one dimensional motion and what symbols should you use to identify a systems position in one dimensional motion
an isolated system allows which of the following to enter or exit
a. neither energy nor matter
b. energy but not matter
c.matter and energy
d.matter but not energy
Answer:
Neither energy nor matter
Explanation:
A system is defined as the part of the universe. In thermodynamics, systems are of three types i.e.
1. Open System : In an open system, both energy and matter can freely exchange with surrounding. For example- boiling water in an open pan transfers both energy and matter.
2. Closed system : In a closed system, only energy is exchanged with the surrounding. For example- boiling water with a lid on the pan exchanges only energy with the surrounding.
3. Isolated system : In an isolated system, neither energy nor matter exchanges with the surrounding. For example : a thermos flask does not exchange energy and matter with the surrounding.
Hence, the correct option is (a) " neither energy nor matter ".
Which of these is a pure substance?
a. diamond
b. salt
c. ocean water
a
a and b
b and c
all of them
Answer:
The correct answers are A and B. Diamond and salt are pure substances.
Explanation:
A pure substance is one whose composition does not vary, even if the physical conditions in which it is found change. For example, water has a formula that is H2O and is always the same, which indicates that it is made up of molecules in which there are 2 hydrogen atoms and 1 oxygen atom. If I changed that formula, it would be another different substance.
A pure substance cannot be broken down into other simpler substances using physical methods.
A pure substance has its own or defined characteristic properties.
explain the purpose of pumping while running through a half pipe
Scientists in different parts of the world repeat an experiment several times and get the same result. Which of these is the most likely reason why experiments are repeated to produce the same result?
to make results non-testable
to make results non-observable
to make conclusions elaborate
to make conclusions reliable
Scientists in different parts of the world repeat an experiment several times and get the same result to make conclusions reliable is the most likely reason why experiments are repeated to produce the same result, therefore the correct answer is option D
what is the scientific claim?Scientific claims are statements made in science based on an experiment.
These Scientific claims are backed by the experimental data and their true results obtained from scientific investigation and experimentation.
A repeated experiment should provide the same outcomes when carried out by several individuals at various periods and preferably, but not always, under comparable circumstances. Consistent experiments must be conducted by renowned scientists who are unrelated to the claimant.
Thus, The most likely explanation for why experiments are repeated to produce the same result is that scientists around the world do so in order to draw reliable conclusions. As a result, option D is the best response.
Learn more about the scientific claims, here
brainly.com/question/11088441
#SPJ5
I'm in 7th grade and I need help with 1.04 law of conservation of energy can someone please help me today
The law of conservation of energy states that the total energy in a system remains constant. Energy can be transferred from one system to another or change form, but the total amount of energy remains the same.
Explanation:The law of conservation of energy states that the total energy in a system remains constant. Energy can be transferred from one system to another or change form, but the total amount of energy remains the same. For example, when a ball is raised to a certain height, it gains potential energy. As the ball falls, the potential energy is converted to kinetic energy. The sum of the potential and kinetic energy remains constant throughout the process.
is the gravity of the sun and moon pull earth's surface in the same direction neap or spring
You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to A) a piece of metal. B) positively charged hair. C) the neutrally charged wall. D) another negatively charged balloon.
It will be attracted most to your positively charged hair. This is why it will make it stand on end. Unlike charges attract, like charges repel.
Will something with the density of 31 sink or float?
Select the correct statement to describe when a sample of liquid water vaporizers into water vapor
So i am doing a science fair project and its about earthquakes so im going to need different supports for my buildings. I found springs but now i need 3 more. URGENT!!
A city planner needs to verify that Main Street and Oak Street are parallel. If ___________ are supplementary, the streets must be parallel. A) ∠1 and ∠2 B) ∠1 and ∠3 C) ∠2 and ∠3 D) ∠2 and ∠4
Answer;
A) ∠1 and ∠2
Explanation;
Supplementary angles form a straight line and have a sum of 180 degrees. Supplementary angles do not have to be congruent or adjacent. Angle 1 and angle 2 are supplementary angles.
Complementary angles on the other hand are two angles whose sum is 90 degrees. Supplementary and complementary angles do not have to be adjacent (sharing a vertex and side, or next to), but they can be. angles sum right angle.
~Dissolved oxygen is required by all aquatic life.
~Chlorophyll, a plant pigment, is measured to indicate the amount of algae in the water.
~Nitrogen and phosphorous are nutrients that can contribute to undesirable levels of algae.
~Benthic invertebrates, animals that live on the bottom of water bodies, are an important source of food for fish, shrimp and crabs.
Georgia's overall coastal habitats were rated and the results can be seen in the bar graph. Benthic organisms are an important link in an aquatic food chain. What is the expected correlation between the benthic index and chlorophyll a?
A) There is no correlation between benthic organisms and chlorophyll a. One group is plant-based; the other is animal-based.
B) There is a direct correlation between algae present and benthic organisms. The more algae, the more benthic invertebrates.
C) As benthic organisms decrease we would expect chlorophyll a to also decrease. There is a direct relationship between the two in the graph.
D) As chlorophyll a increases, we would expect dissolved oxygen to decrease and because benthic organisms are animals, they too would decrease.
The answer is D. As chlorophyll a increases, we would expect dissolved oxygen to decrease and because benthic organisms are animals, they too would decrease.
Answer the question below based on the periodic table entry for silicon. What is the atomic mass? 2 14 28 28.08
false lies forgive me Based on the periodic table entry for silicon, the atomic mass of silicon is 28.08.
28.08
Explanation;The atomic mass of a given element is the sum of the masses of its isotopes, each multiplied by its natural abundance. Isotopes are atoms of the same element with the same atomic number but different mass number. Atomic number on the other hand is the number of protons in the nucleus of an atom.Silicon is an element in group 4 in the periodic table, it has an atomic mass of 28.08. It has an atomic number 14, which means it has 14 protons in the nucleus of its atom, and thus it has 14 electrons in the energy levels, and therefore, its electronic configuration is; 2:8:4.An eagle carrying a trout flies above a lake along a horizontal path. The eagle drops the trout from a height of 6.1 m. The fish travels 7.9 m horizontally before hitting the water.
What is the velocity of the eagle? Round your answer to the nearest tenth.
Answer:
Explanation:
We can use one of the SUVAT equations like:
[tex]s = ut + \frac{1}{2} a^{2}[/tex]
where s = displacement, u = initial velocity, a = the acceleration and t = time.
To get the velocity of the eagle, we have to look at motion of the fish first, using the SUVAT equation form above, therefore:
Vertical motion, which is going downwards
displacement = 6.1 m
Initial velocity = 0 m/s ,
acceleration = 9.8 [tex]m/s^{2}[/tex]
So, we need to find the time.
[tex]6.1 = 0t + \frac{1}{2} 9.8t^{2}\\6.1 = 4.9t^{2} \\t^{2}= \frac{6.1}{4.9}\\t = \sqrt{1.2448}\\t = 1.116 s[/tex]
Now with the time, we can look at the horizontal motion of the fish, where the variable of the initial velocity, u, is what we need to find, which is also the velocity of the eagle:
Acceleration = 0 [tex]m/s^{2}[/tex]
Displacement = 7.9 m ,
time = 1.116 seconds we need to find Initial velocity (u).
[tex]7.9 = v*1.116 + \frac{1}{2} 0*1.116^{2}\\7.9 = 1.116v \\v= \frac{7.9}{1.116} \\ v= 7.1 m/s[/tex]
Therefore, velocity of the eagle = 7.1 m/s
Suppose the half-life of an element is 10 years. How many half-lives will it take before only about 6% of the original sample remains?
Answer:
40.59 years
Explanation:
Use the decay law of radioactivity
[tex]N = N_{0}e^{-\lambda t}[/tex]
Where, λ is the decay constant
λ = 0.6931 / T
where, T is the half life
λ = 0.6931 / 10 = 0.06931 per year
So, N = 6% of N0
[tex]0.06 = e^{-0.06931\times t}[/tex]
By solving we get
t = 40.59 years
The biosphere is the highest level of organization in the hierarchy of life on earth. Rank the levels of organization from most complex to simplest.
A) ecosystems > communities > populations > organisms
B) organisms > populations > communities > ecosystems
C) ecosystems > organisms > communities > populations
D) populations > communities > ecosystems > organisms
In object of mass 30 kg is in freefall in a vacuum where there is no air resistance determine the acceleration of the object
How do microwaves cook food or heat water?
Microwaves in an oven heat food by causing water molecules to align and transfer energy to the thermal motion of the water.
Explanation:Microwaves in an oven are produced electronically by accelerating electrons. The oscillating electric field of the microwaves inside the oven exerts a torque on water molecules in food, causing them to heat up. The water molecules have a dipole moment, which means they have separated centers of equal and opposite charges. The microwaves cause the water molecules to align in one direction and then in the other, transferring energy to the thermal motion of the water and heating the food.