Answer: magnitude of the impulse of this force is 0.384 Ns
Explanation:
Given the following :
Pushing force (F) = 12N
Duration of the force = time (t) = 32ms, hence, time = 32 × 10^-3 seconds
The impulse of a body is given by the product of the force and the duration of the applied force ;
Therefore impulse = F × t
Impulse = 12 (N) × (32 × 10^-3) (s)
Impulse = 384 × 10^-3
Impulse = 0.384 Ns
The diagram illustrates the evolution of the universe, starting from the big bang. Each concentric circle represents a stage in the evolution as stated by the big bang theory. The arrows illustrate the changes that happened after the big bang and leading up to the stage where gases were formed that later led to the formation of stars and galaxies. Choose the inaccurate statements on the diagram.
Answer: The two correct answers are Universe became more dense and universe became less transparent.
Explanation: I took the test and those are correct
The incorrect statements on the diagram universe became more dense Universe became less transparent.
What is the universe?The universe is the whole cosmic system of matter and energy. The Earth, the Sun, the Moon, the planets, and the stars along with the dust, gases, and rocks form the universe.
The big bang is the theory that explains how the universe began. It says that the universe began with just a single point. It went on expanding and stretched to grow as large as possible. It is still now expanding.
The diagram (attached) illustrates the evolution of the universe, starting from the big bang. Each concentric circle represents a stage in the evolution as stated by the big bang theory.
Thus, the inaccurate statements on the diagram universe became more dense Universe became less transparent.
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Guy received his home loan for $200,000. Determine which of the following was the mortgage company’s most important reason for giving him his loan. budget plan of how the payments will be made the total value of current assets and all income the referral from other clients of the company the neighborhood in which the home is located NEXT QUESTION
Answer: The answer is "the total value of current assets and all income"
Explanation:
Explain the conditions in which a person can or can’t hear an echo. Which of the following materials would be the least efficient in soundproofing a room: clay tile, plaster, or perforated acoustic ceiling material? Be sure to use your knowledge of the coefficient of absorption in your explanation. Compare and contrast infrasonic and ultrasonic vibrations. Describe the responses of the human ear to sound waves coming from the right side, left side, or in phase.
Answer:
plaster............
Explanation:
1.) An echo can be heard only if the person is in the range of both the sound waves coming directly from the source and the reflected waves and at a distance of more than 16.6 meters in front of the reflecting source.
2.) A person behind the reflecting source will likely not hear an echo. If the interval of time between the instant a sound wave reaches the ear and the instant the reflected wave reaches the ear is less than 0.1 second, the person can’t hear the echo separately from the original sound. Finally, the person can’t be too close to the reflecting surface.
3.) Clay tile would be the least efficient because it has the lowest coefficient of absorption (3%). This means that the energy remaining in a reflected wave is 97%, which is very high. (Remember that this is equal to 100 minus the coefficient of absorption). Very little of the sound energy would be absorbed.
4.) Infrasonic and ultrasonic vibrations can’t be heard by humans because they’re outside of the range of frequencies that can be detected. Infrasonic vibrations have a lower frequency than can be heard by the human ear; ultrasonic vibrations have a higher frequency than can be heard by the human ear. Infrasonic vibrations can be felt if the amplitude is great enough. Ultrasonic vibrations are utilized in sonar equipment and in applications to detect flaws in steel castings and to remove grease or foreign material from machine-part surfaces.
5.) If the sound comes from the right side, the waves reach the right ear before the left ear. If the sound comes from the left side, the waves reach the left ear before the right ear. The difference between the phases of waves reaching both ears is detected by the ears and then interpreted by the brain. If the sound comes from directly above, directly below, directly ahead, or directly behind, the sound waves reach both ears in phase and is interpreted as such by the brain.
Explanation:
PF :)
Please answer this question
Answer:
Volume of the tank = 3m³
Mass of total water = 3,000 kg
Explanation:
Given:
Measurement of tank = 2m × 1.5m × 1m
Density = 1,000 kg/m³
Find:
Volume of the tank.
Mass of total water.
Computation:
⇒ Volume of the tank = lbh
Volume of the tank = 2m × 1.5m × 1m
Volume of the tank = 3m³
⇒ Mass of total water = Volume of the tank × 1,000 kg/m³
Mass of total water = 3m³ × 1,000 kg/m³
Mass of total water = 3,000 kg
Answer:
length x width x height = volume
2 x 1.5 x 1 = 3m
3m^3 is the volume
1000 km/ m^3 x 3m^3 = 3000^3 km
Hope this helps
Explanation:
A stone is thrown up from the top of a tower. It reaches the ground in 5.64 seconds. A second stone is thrown down from the same tower. They have the same initial velocity. This stone reaches the ground in 3.6 seconds. The height of the tower and the initial velocities aren't given. You need to find them.
Answer:
9.25
Explanation:
Waves that collide with a barrier will reflect at an angle equal to the angle of incidence.
True
False
Answer:
True
Explanation:
This is a fundamental concept in physics dealing with the nature of waves where when the waves collide with a barrier such as wall or some form of surface will reflect at an angle equal to the angle of incidence.
Describe the extent of the swing !
Answer:Definition of swing it. informal. : to do or manage something successfully If he can swing it, he'll visit next
when taking a shower are girls suppose to wipe front to back ?
Answer:
Explanation:
I don't think it matters while taking a shower, however, while using the restroom, it is especially encourgaed to wipe front to back. The reasoning behind this is to prevent UTI's that are transferred by fecal particles and bacteria from the anus into the vagina. Hope this helps:)
In which of the following situations or places would you want to reduce the
force of friction?
I A. Skiing down a hill during a race.
B. Walking down a steep hill.
C. Sitting in the bed of a pickup truck while it turns a corner
D. In the axle of the wheels while you ride your bicycle.
Answer:
D
Explanation:
The correct answer would be in the axle of the wheels while you ride your bicycle.
Options A, B, and C requires that the forces of friction is increased in order to have more control.
However, option D requires that there is a minimal frictional force in the axle of the wheels of a bicycle while riding so that a little effort would be required to keep the bicycle moving.
The lesser the friction, the lower the effort that would be needed to keep the bicycle moving and vice versa.
Wood has chemical energy, which can be used to generate thermal and radiant energy when burned in a fireplace. Which best explains what happens to the total amount of energy in this scenario? The total energy in the system increases because chemical energy creates thermal and radiant energy. The total energy in the system decreases because chemical energy disappears as thermal and radiant energy are generated. The total energy in the system remains the same as the decrease in chemical energy equals the increase in thermal and radiant energy. The total energy in the system remains the same as the increase in chemical energy equals the decrease in thermal and radiant energy.
Answer: C
Explanation: I took the quiz
The total energy in the system remains the same, as the decrease in chemical energy equals the increase in thermal and radiant energy, to explain the total amount of energy.
What is radiant energy ?The energy of electromagnetic and gravitational radiation is known as radiant energy. Its SI unit for energy is the joule. Radiant flux with respect to time can be integrated to determine the amount of radiant energy.
The passage of energy from one place to another is known as energy transfer. When energy transforms, it goes from one type to another. Although energy can be changed or moved, the overall amount always stays the same.
The process through which plants convert solar energy (from the Sun) into chemical energy is known as photosynthesis. The chemical energy is available as food and is stored in the plant as sugar.
Thus, option C is correct.
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When a mass suspended from a spring is in its equilibrium position, the upward force exerted by the spring is equal to
the downward force exerted by gravity acting on the mass.
True
False
Answer:
True as according to Newtons 3rd law the spring must exert a equal force to gravity in order to stay in equilibrium position
Explanation:
What is the resultant force?
8 NA
14 N
3N
3N
22 N
Answer:
option will be ''B'' 0N
Explanation:
There are two forces acting upward 8N and 14N which is equal to 22N(upward force)
since, 22N is also acting downwards
both the forces will cancel each other and the the outcome will be zero.
Now, there is a 3N force acting on the left and right. So, they too, will cancel each other and the result will be zero.
In simple words, the box won't move in any direction Since it's being pulled with equal strength from all sides.
hope this helps
hydrogen bonding is a strong attractive force. T OR F
Answer:
F
Hope it helps you!
The general kinematic equations of motion for vertical displacement can also be simplified significantly. Write the simplified
equation for y in this case. Explain how you have been able to simplify it from this general displacement equation:
Answer:
Δy = v₀t + (1/2)gt²
where g = 9.81 m/s if the body is moving downwards and g = -9.81 m/s if the body is moving upwards
Explanation:
The general kinematic equation for horizontal displacement is gives as:
Δx = v₀t + (1/2)at²
Where
Δx = change in the x direction
v₀ = initial velocity
t = time
a = acceleration
If the body is vertically instead of horizontally, Δx is changed to Δy
Δy = v₀t + (1/2)at²
For a vertical moving body, the acceleration it experiences is the gravitational accerelation of the earth 'g'
So the equation becomes:
Δy = v₀t + (1/2)gt²
where g = 9.81 m/s if the body is moving downwards and g = -9.81 m/s if the body is moving upwards
The general kinematic equations of motion for vertical displacement is written as [tex]h = v_0_yt - \frac{1}{2} gt^2[/tex].
The general kinematic equations of motion for vertical displacement is written as follows;
[tex]h = v_0_yt - \frac{1}{2} gt^2[/tex]
where;
h is the vertical displacement of the object[tex]v_0_y[/tex] is the initial vertical velocity of the objectg is the acceleration due to gravityt is the time of motion of the objectThus, the general kinematic equations of motion for vertical displacement is written as [tex]h = v_0_yt - \frac{1}{2} gt^2[/tex].
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An overhead projector lens is 32.0 cm from a slide (the object) and has a focal length of 30.1 cm. What is the magnification of the image? (Unit=cm) PLS HELP
Answer: M = 14.3
Explanation:
Given the following :
Object distance (u) = 32cm
Focal length (f) = 30.1 cm
Magnification = image distance (v) / object distance (u)
Recall ; 1/f = 1/u + 1/v
1/30.1 = 1/32 + 1/v
1/v = 1/30.1 - 1/32
1/v = (32 - 30.1) / 963.2
1/v = 2.1 / 963.2
1/v = 0.0021802
v = 1/0.0021802
v = 458.66666 cm
Therefore, Magnification 'M' = v / u
M = 458.66666 / 32
M = 14.333333
M = 14.3
Answer:
M = -15.8
Explanation:
object distance = 32cm
focal length = 30.1 cm
To find M we first need to find di or image distance
I will use the equation: 1/f = 1/di + 1/do
By changing the equation to 1/f - 1/di = 1/do we get 0.0019725
equation with numbers plugged in:
1/30.1 - (1/32) = 0.0019725
To change 1/do to do we divide 1 by 0.0019725
You should get 506.97
Now use the equation
M = -(di/do)
M = -(506.97/32)
You should get M = -15.8
How many electrons do carbon and oxygen share
Answer:
1
Explanation:
To satisfy the Octet Rule, Carbon needs 4 more valence electrons. Since each Oxygen atom has 3 lone pairs of electrons, they can each share 1 pair of electrons with Carbon; as a result, filling Carbon's outer valence shell
Answer:
The Answer Is 4!!
Explanation:
Hope This Helps:)))
An object is held 24.8 cm from a lens of focal length 16.0 cm. What is the magnification of the image?
Answer: 1.8
Explanation:
You are given
the object distance U = 24.8 cm
Focal length F = 16.0 cm
First find the image distance by using the formula:
1/f = 1/u + 1/v
Where V = image distance
Substitute u and f into the formula
1/16 = 1/24.8 + 1/v
1/ v = 1/16 - 1/24.8
1/v = 0.0625 - 0.04032258
1/v = 0.022177
Reciprocate both sides by dividing both sides by one
V = 45.09 cm
Magnification M is the ratio of image distance to the object distance. That is,
M = V/U
Substitute V and U into the formula
M = 45.09/24.8
M = 1.818
Magnification of the image is therefore equal to 1.8 approximately
Answer:
-1.82
Explanation:
the first answer process was actually somewhat correct but the signs were switched.
Which of the following is a personal decision that involves science A)It is immoral to cheat on your homework? B)what movie will I like the most this weekend? C)will an air purifier reduce the dust in my house? D)is $100 a reasonable price for a cell phone?
Answer:
C because air purifier is very essential in dusty homes .
Answer:C
Explanation: The answer is C because an air purifier purifies the air in your room which is science.
A 51-kg woman runs up a vertical flight of stairs in 5.0 s. Her net upward displacement is 5.0 m. Approximately, what average power did the woman exert while she was running?
Answer:
510
Explanation:
Power= Rate of doing work i.e work done\time
=force*displacement\time
=mass*g*d\t
=51*10*5/5
=510watt
Why is this equation wrong?
Answer:
It is not possible to find the square root in such a way
Explanation:
Given the resistivities below, which material is best described as an insulator?
A. 4.5 22•m
B. 2.8 x 10-8
12.m
C. 1.7 x 10-8 2•m
D. 3.2 x 108 2.m
Answer: D) 3.2 × 10^8
Explanation: Insulators are best described as materials which are poor conductors of electricity and hence do not allow passage of electricity through them. Resistivity are hence used to describe property or characteristic of a material which does not allow the flow or passage of electric current.
In summary, materials which high resistivity values are referred to as Insulators. Conversely, those with low resistivity or high conductivity values are called conductors while those with intermediate values are named semiconductors.
In the question given above, the material with a resistivity value of 3.2 × 10^8 - - - has a very high resistivity value (320000000Ω), the other options given have very low resistivity values ; 0.0000000017, etc and are most likely to be conductors due to their excessively low resistivity values.
What is the slope of the line plotted below?
A. 1
B. -2
C. 2
D.-1
Answer:
B. -2
Explanation:
Since the line is coming from the top left to the bottom right, you know the line is going to be negative.
If you take two points, so (0,1) and (1,-1), and use the formula y2-y1/x2-x1, after substitution you should get -1-1/1-0. If you simplify, the answer should be -2/1 or -2.
Answer it plz the answer is easy but cant undersatand
Answer:
2.
a. 3 meters^3 is the volume.
Explanation: This is when we find the volume of a rectangular prism which is whl so, 2*1.5*1=3^3.
b. 3000 is the mass.
Explanation: Density is calculated by mass/volume so, 1000=m/3. When we multiply 3 to both sides, we get 1000*3 which is 3000. So, 1000=3000/3.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
A car has a mass of 8000 kg and a kinetic energy of 24,000 J. What is its
speed?
A. 1.7 m/s
B. 2.4 m/s
C. 6 m/s
D. 3 m/s
Answer:
2.4
Explanation:
48,000/8000=6
square root of 6 = 2.44948974278
so 2.4
AnswerB.2.4m/s
Explanations;
24000=1/2×8000×v^2
24000/4000=v^2
√ 6.=v
v=2.4
What type of quantity is momentum?
It is a scalar quantity because it involves magnitude only.
It is a vector quantity because it involves magnitude only.
It is a scalar quantity because it involves magnitude and direction.
It is a vector quantity because it involves magnitude and direction.
Answer: It is a vector quantity because it involves magnitude and direction.
Explanation:
momentum has magnitude and direction
Magnitude is a Scalar quantity
direction is a vector quantity
scalar times a vector is a vector
The type of quantity momentum has is that of a vector and it is denoted as option D.
What is a Vector quantity?
This is the type of quantity which has magnitude and direction present in it and momentum has the both.
The formula is mass × velocity in which velocity is a vector quantity which makes it that too.
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____________ interference occurs when two waves are out of phase
[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Wave Optics.
Whenever the waves are out of phase they form a DESTRUCTIVE interference.
thus,
Destructive Interference occurs when two waves are out of phase.
Mary is allergic to cats. Mary's friend, Sue, has a roommate who has cats. Whenever Mary visits Sue, Mary sneezes even before she enters Sue's house. Mary's sneezing persists even after Sue's roommate and his cats have moved out. After a while, Mary stops sneezing before she enters Sue's house. The point at which Mary's sneezing stopped is an example of _____.
Answer: Extinction
Explanation: Extinction simply means cessation. A condition whereby an action or behavior exhibited by an individual or organism eventually stops. In psychological parlance, extinction is usually attributed to the discontinuance of a certain behavior usually due to non - reinforcement or eventual absence of the conditioned stimulus.
In the scenario above, the point at which Mary stopped sneezing is called extinction which is due to the removal of the cat which is the cause of Mary's sneezing behavior.
The radius of Earth is . The average Earth-Sun distance is . How many Earths would fit between Earth and the Sun if they are separated by their average distance? Use an order-of-magnitude calculation to estimate this number. Then, determine an exact answer and express it in scientific notation with the correct number of significant digits
Answer:
The radius of the earth is 6,371 km.
The average Earth-Sun distance is 152.09 million km
How many Earths would fit between Earth and the Sun if they are separated by their average distance? Approximately 11,936 Earths.
I didn't really understand the last part, but if you don't get a better answer please mark me as brainliest.
What is indicated by the slope of an acceleration vs. time graph?
A. The velocity of an object
B. The total displacement of the object
C. The change in position of the object
D. The maximum speed of the object
Answer:
Option A is tge correct answer.
Explanation:
The reason for above answer is the slope of acceleration vs time graph shows the velocity as when the acceleration gets positive , the velocity gets increased and when the acceleration gets negative tgen velocity also decreases.
hope it helps..
Answer:
no value was assigned to the slope of an acceleration vs. time graph
Explanation:
PLS ANSWER (SCIENCE QUESTION) I WILL MARK U AS THE BRAINLIEST!!! PLS ANSWER REALLY EASY!!
Q1. Fill in the blanks:
1. __________________ are the building blocks of matter.
2. Each ________________ has a chemical symbol.
3. ________________ is used in oxy- acetylene flame for welding.
4. Noble gasses are also called __________________.
5. Dimitri Ivanovich Medeleeve arranged the elements systematically in _______________
6. Elements are the simplest kind of __.
7. Metals have __ melting and boiling points.
8. As you move from the left side of the periodic table to the right side, the elements become __________ .
Answer:
1. Atoms
2. element