Answer:
calculate the volume of each sample by subtracting the intial water volume from the volume after the sample was added . Record the volume of each sample on your chart in mililiters(ML).
Explanation:
Is velocity constant in uniform motion?
The Direction of the Velocity Vector
Objects moving in uniform circular motion will have a constant speed. Velocity, being a vector, has both a magnitude and a direction. The magnitude of the velocity vector is the instantaneous speed of the object.
Why do the tall structures fall off the ground so easily?
Answer:
Structures that are tall or skinny are generally less stable, making them more likely to fall when exposed to lateral forces, whereas ones that are shorter or wider (at the base) are generally more steadfast.
Explanation:
A ray of light strikes a plane mirror at an angle of incidence of 60°, is reflected from the mirror and then strikes a second plane mirror placed so that the angle beftween the mirrors is 45°. The angle of reflection at the second mirror, in degrees, is
A 15
B 25
C 45
D 65
E 75
plz help me guys ASAP!
Answer:
60 - 45 = A. 15
Explanation:
Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
What is Plane mirror?A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.
A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.
The image that follows illustrates how an object appears when viewed via a plane mirror.
Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
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During a sunny afternoon, the sun suddenly seems much less bright than usual. The daylight seems much less intense, as if there is a dense cloud cover, but there’s no clouds in the sky. After about half an hour, everything seems normal again. Which claim about the temporary decrease in light can be supported by the evidence?
Answer:
D). A sudden change in temperature increased the density of the atmosphere.
Explanation:
The claim that can be made and supported with evidence regarding the temporary decrease in light would be 'a sudden change in temperature will increase the density of the atmosphere.' As the temperature increases, the molecules in the atmosphere begin to move fastly which causes a decrease in atmosphere density while it increases with the fall in temperature. As a result, the intensity of sunlight gets affected due to molecules being heavier and floating in the atmosphere. Thus, option D is the correct answer.
Answer: Its the atmosphere
Explanation:
I have had this Question before. hope this helps:)
I need this now due date 9-11-20 1:00pm
Answer:
Yes because the hotter the water the less time it takes to dissolve.
Explanation:
which sI units are combined to describe force?
Answer:
Symbol N
Explanation:
The SI unit of force is the newton, symbol N
The units of mass, length, and time are.
The combination is the unit of force, called the "Newton".
1 Newton is the force that accelerates 1 kilogram of mass at the rate of 1 meter per second every second.
What does amu represent?
define liquid in matter
Answer:
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds.
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 90 m at a speed of 90 km/h ?
Answer:
The coefficient of static friction will be 0.7Explanation:
Given data
the radius of curve= 90m
speed v= 90 km/h to m/s = (90*100)/60*60= 25 m/s
we know that the expression for the centripetal force acting on the car
[tex]Fc= \frac{mv^2}{r}[/tex]-------1
we also know that the expression for the frictional force between road and tire.
Ff= μmg--------2
Equating equation 1 and 2 we have
μmg= mv^2/r
μ= v^2/gr
substituting the values of speed and radius we have (assuming g= 9.81m/s^2)
μ= 25^2/9.81*90
μ= 625/882.9
μ= 0.7
What is the kinetic energy of a 150 kg object that is moving at a speed of 5
m/s?
Answer:
Kinetic Energy=1/2×m×v^2,Where m=mass,v=velocity. So, kinetic energy of the object=1/2×150×15^2 = 16875 kg m^2 s^-2 .
Explanation:
math lol
Which pair of quantities represent scalar quantities, and how are they different from vector quantities?
A. energy and velocity
B. displacement and velocity
C. displacement and time
D. distance and time
D.
They don't have directions.
The quantities with only magnitude and no direction are called scalar quantities. Therefore, option D is the correct answer.
Scalar quantities have only magnitude but vector quantities have both magnitude and direction. Some examples of scalar quantities are,
• Mass
• Temperature
• Speed
• Density
Thus, we conclude that the quantities with only magnitude and no direction are scalar quantities. Hence option D is the correct pair.
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hey can anyone pls help me out in dis !
All of the above.
For example:
A glass plate is a solid. Particles vibrate in a solid and are closely packed. together.
It doesn’t change shape if you touch it.
It doesn’t change volume like it’s water.
Answer:
D: all of the above
Explanation:
particles in a solid do vibrate but they're tightly packed and move around fixed location
Please someone helppp me.. I will mark as brainliest.
Answer:
b) G.P.E = Mgh
300j = M x 10 m/s² x 15 m
300 j/ 10 m/s² x 15 m = M
300j/ 150 s² = M
2kg = M
c) K.E = 1/2 m v²
K.E = 1/2 (50) (50)²
K.E = 1/2 (50) (2500)
K.E= 125000/2
K.E = 625 000 J
Plz help
Among one litre boiling water and a red hot glowing nail, which one has more
amount of heat and why?
The water. Take the specific heat of steel, estimate the volume of the nail, you know the volume of the water, which has a specific heat of one. Or be obvious. If you dropped a red hot nail into a liter of cold water, what would happen?
Answer:
Water
☆One litre boiling water has more amount of heat because it has much more greater mass than iron nail
I am not sure if its wrong,sorry
but here is the iron nail explanation also
☆A red hot nail has more amount of heat because the density of iron is more than that of water
HELP PLEASE THIS IS DUE RIGHT NOW. What is the difference between constant acceleration and instantaneous acceleration?
why do you think scientists put their results in data tables and graphs?
Answer:Since most of the data scientist collect is quantitative, data tables and charts are usually used to organize the information • Graphs are created from data tables • They allow the investigator to get a visual image of the observations, which simplifies interpretation and drawing
Have a nice day (^-^) ;)
Question 2 of 10
Which statement best describes how vomiting can help an animal maintain
homeostasis?
A. It keeps the animal's body temperature within a certain range.
B. It rids the body of something harmful.
C. It prompts the animal to eat healthy food.
D. It uses up excess energy in the body.
Answer:
I would say B. It rids the body of something harmful.
Explanation:
Vomiting usually tries to get rid of something bad in your stomach. If you vomit when your sick its because its trying to get rid of that sickness.
Hope this helps >:3
Answer:
B. It rids the body of something harmful.
Explanation:
The figure shows a horizontal pipe with a circular cross section whose diameter varies. The cross-sectional area at X is 3.0×10−4m2 and at Y is 0.60×10−4m2. Water of density 1000kg/m3 fills the pipe and flows through it at a constant rate of 2.4×10−4m3/s. The difference in pressure between X and Y is most nearly 750 Pa 750 Pa A 1600 Pa 1600 Pa B 7700 Pa 7700 Pa C 8320 Pa 8320 Pa D
By Bernoulli's Principle :
[tex]P_x+\dfrac{\rho v_x^2}{2}+\rho gz_x=P_y+\dfrac{\rho v_y^2}{2}+\rho gz_y[/tex]
Since , pipe is horizontal so every point is at same height .
So , [tex]z_x=z_y[/tex] .
The equation will reduced to :
[tex]P_x+\dfrac{\rho v_x^2}{2}=P_y+\dfrac{\rho v_y^2}{2}[/tex] ..... 1 )
Also flow rate will be constant :
[tex]Q=A_xv_x=A_yv_y[/tex]
[tex]v_x=\dfrac{Q}{A_x}\\\\v_x=\dfrac{2.4\times 10^{-4}}{3\times 10^{-4}}\ m/s\\\\v_x=0.8\ m/s[/tex]
[tex]v_y=\dfrac{Q}{A_y}\\\\v_y=\dfrac{2.4\times 10^{-4}}{0.6\times 10^{-4}}\ m/s\\\\v_x=4\ m/s[/tex]
Now ,
[tex]P_x-P_y=\dfrac{\rho v_y^2}{2}-\dfrac{\rho v_x^2}{2}\\\\P_x-P_y=\rho[\dfrac{ v_y^2}{2}-\dfrac{v_x^2}{2}]\\\\P_x-P_y=1000\times [\dfrac{ 4^2}{2}-\dfrac{0.8^2}{2}]\\\\P_x-P_y=7680\ Pa[/tex]
Difference in pressure between X and Y is most near to 7700 Pa.
Hence, this is the required solution.
Please Help! Im dumb.
Two completely different compounds may contain identical elements.
True or False
Is the answer C or B
Answer:
c
Explanation:
though c is wider it has more water.
The answer is *C* Because The C Jar is Wider than others so it holds more water
1.A body of certain mass is kept at a height of 15m from the ground, taking the value of g as 10m/s find out the mass of the body when it posses the energy of 300J.
2. A boy runs at a velocity of 50m/s. If he has the mass of 50kg what will be the energy possessed by him?
Answer:
1.#potential energy = PE, m = mass in kg, g = force of gravity, h= vertical height above the ground. ** means to the power of ie exponent. * means multiply.
PE = mgh
300 = m(10)(15)
m = 300/(10)(15)
m= 2kg
2. KE = 1/2 mv**2
= 1/2(50)(50)**2
= 2500 joules
Explanation
Is as in solution
Select the positive statement that would BEST counteract this negative statement: "I do not have the time to exercise." A. I can exercise anywhere. B. I have to start somewhere. C. I will make it a priority. D. I will increase my energy. Please select the best answer from the choices provided. A B C D
Answer:The awnser would be C!
Explanation:
Hope this helped!
Answer:
C. I will make it a priority.
Explanation:
How can positive feedback influence the stability of a system?
A. It can cause the system to remain stable as long as inputs are
constant
B. It can cause the system to oscillate between stability and
instability
c. It can cause instability that eventually results in the system's
destruction
D. It can cause instability by reversing the direction of the system,
The positive feedback influence the stability of a system is: It can cause the system to remain stable as long as inputs are constant. Hence, option (A) is correct.
What is stability ?A body's capacity to return to its initial static equilibrium after being slightly shifted is referred to as stability.
A body in equilibrium doesn't suffer linear acceleration or a turning effect, and unless a force from the outside disturbs it, it will stay in that state forever. (The First Law of Newton)
When tiny, externally induced displacements from an equilibrium result in forces or torques that tend to oppose the displacement and bring the body back to its initial equilibrium, the equilibrium is said to be stable.If even the smallest deviations result in forces or torques that tend to increase the displacement, the equilibrium is said to be unstable.Learn more about stability here:
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Answer:c
Explanation:got it wrong bc the other person didn’t know bc their small minded
name the three States of matter
Answer:
[tex] \fbox{ \sf { \: Solid \: , \: Liquid \: and \:Gas}}[/tex]
Explanation:
[tex] \star[/tex] Let's learn about matter.
We see different kinds of things around us. Some of these are wood , book , salt , beaker , sugar , water , milk , oil, rubber and water vapour. All these things occupy space and have mass as they are matter. Anything that occupies space and has weight is called matter.
[tex] \star[/tex] States of Matter
Solid , liquid and gas are the three states of matter.
[tex] \hookrightarrow{ \text{ \underline{ Solid}}}[/tex]
Different things have different sizes and shapes but a particular thing has a fixed shape and size. The things which have definite size and definite shape are solids. Stone , word , ice , glass etc are some examples of solid.
[tex] \hookrightarrow{ \text{ \underline{ Liquid}}}[/tex]
The things having a definite volume but no definite shape of their own are called liquids. Water ,milk , petroleum , oil etc are as common examples of liquid.
[tex] \hookrightarrow{ \underline{ \text{Gas}}}[/tex]
The things which have neither a definite volume not a definite shape of their own are called gases. The bases take the shape and the size of the vessels in which they are enclosed. Air , smoke , water vapours , hydrogen gas are some examples of gases.
[tex] \sf{Hope \: I \: helped !}[/tex]
[tex] \sf{Best \: regards !!}[/tex]
~[tex] \text{TheAnimeGirl}[/tex]
Match the object to the type of motion it's displaying. which letter goes with which number?
A. linear motion
1. the propeller of an aircraft in midair
2.a car driving up a winding mountain road
B. rotational motion
C. curvilinear motion
3. music being played on a stringed instrument, such as a guitar
4.runners sprinting across a straight track
D. vibrational motion.
Hello There!!
I think the best answer choice is:
A. [tex]Linear[/tex] [tex]motion[/tex]
B. [tex]Rotational[/tex] [tex]motion[/tex]
D. [tex]Vibrational[/tex] [tex]motion[/tex]
4. [tex]Runners[/tex] [tex]sprinting[/tex] [tex]across[/tex] [tex]a[/tex] [tex]straight[/tex] [tex]track[/tex]
C. [tex]Curvilinear[/tex] [tex]motion[/tex]
3. [tex]Music[/tex] [tex]being\\\\\\[/tex] [tex]played[/tex] [tex]on[/tex] [tex]a[/tex] [tex]stringed[/tex] [tex]instrument,[/tex] [tex]such[/tex] [tex]as[/tex] [tex]a[/tex] [tex]guitar[/tex]
2. [tex]A[/tex] [tex]car[/tex] [tex]driving[/tex] [tex]up[/tex] [tex]a[/tex] [tex]winding[/tex] [tex]mountain[/tex] [tex]road[/tex]
1. [tex]The[/tex] [tex]propeller[/tex] [tex]of[/tex] [tex]an[/tex] [tex]aircraft[/tex] [tex]in[/tex] [tex]midair[/tex]
I'm not sure this is 100% right....
P.S Tell me if this is wrong....
[tex]Hope This Helps[/tex] [tex]Sangwoo!![/tex]
#[tex]Be[/tex] [tex]Bold[/tex]
# [tex]Always[/tex] [tex]Brainly[/tex]
A.linear motion is runners sprinting across a straight track
B. rotational motion is the propeller of an aircraft in midair
C. curvilinear motion is a car driving up a winding mountain road
D.vibrational motion music being played on a stringed instrument, such as a guitar
What is a uniform circular motion?It is defined as motion when the object is moving in a circle with a constant speed and its velocity is changing with every moment because of the change of direction but the speed of the object is constant in a uniform circular motion
Hence, runners sprinting across a straight track is a type of linear motion, the propeller of an aircraft in midair is performing the rotational motion, a car driving up a winding mountain road is a curvilinear motion, music being played on a stringed instrument, such as a guitar is a type of vibrational motion
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difference between weightlessness in space and weightlessness in earth
In space we feel weightlessness because the earth's gravity has less effect on us. The Earth's gravitational attraction at those altitudes is only about 11% less than it is at the Earth's surface. If you had a ladder that could reach as high as the shuttle's orbit, your weight would be 11% less at the top.
A coin is dropped from the top of the Tower of Pisa, 53m above the ground. What is the coin's initial velocity?
Answer:
Initial velocity U = 0
Final velocity V = 32.23 m/s
Explanation:
Given that a coin is dropped from the top of the Tower of Pisa, 53m above the ground.
What is the coin's initial velocity ?
Since the coin is dropped from the tower, the initial velocity U will be equal to zero.
Therefore, U = 0
But the final velocity V will be calculated by using the formula
V^2 = U^2 + 2gH
V^2 = 0 + 2 × 9.8 × 53
V^2 = 1038.8
V = sqrt ( 1038.8)
V = 32.23 m/s
Which option lists a form of potential energy followed by a form of kinetic energy?
A. Sound energy | nuclear energy
B. Magnetic energy electromagnetic energy
C. Gravitational energy | elastic energy
D. Electromagnetic energy | electrical energy
Answer:
Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.
(B) is correct option.
Explanation:
Given that,
Lists a form of potential energy followed by a form of kinetic energy
We know that,
Sound energy :
The movement of energy through object it is called sound energy. When a object produced vibration by force then it moves in wave.
Sound wave is example of kinetic energy.
Nuclear energy :
The store energy in the nucleus of the atom it is called nuclear energy. This energy released when occurs fusion and fission.
Nuclear energy is the example of potential energy
Magnetic energy :
Magnetic energy is a type of potential energy which is depend on distance and position in the magnetic field.
Electromagnetic energy :
Electromagnetic energy is light energy. it is type of kinetic energy.
Gravitational energy :
Gravitational energy is a type of potential energy. It is an energy related with gravity or gravitational force.
Elastic energy :
The store energy in elastic object it is called elastic energy. This energy is a type of potential energy.
Electrical energy :
The movement of electrons is called electrical energy. When electrons move through a wire then it is are called electricity. Electrical energy is type of kinetic energy.
Hence, Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.
(B) is correct option.
Answer:
its B
Explanation:
When the mass of an object decreases, the force of gravity - Remains Unchanged - Decreases - increases - Becomes irregular
Answer:
Decreases
Explanation More mass=More gravitational pull
Less mass=Less gravitational pull
Hope this helps
Answer:
decreses
Explanation:
Describe three common issues that affect societies across places and times
Answer
Common issues that affect societies across places and times include healthcare, disease, natural disasters, drought, unemployment, racism, war, pollution, over-use of resources, selecting leaders, high taxes, education, and relationships with other countries.