Answer:
The correct answer is "The distance between your house and your school, and how long it took you to get there." This is the proper answer choice because mph is miles per hour. Meaning you can travel 25 miles in just one hour. Speed in such form is used for measuring distance, or time. Hope it helped.
Explanation:
I need help on this question
Is the following statement an observation or an inference? "The house collapsed at the same time that the poles fell down." Explain
Answer: Observation (≧▽≦)
Explanation: An observation is what you noticed. That being said i noticed "The house collapsed at the same time that the poles fell down." //Hope this helped ≧▽≦//
write an experiment to show that black surfaces absorb heat energy more than shiny polished surfaces or white surface
Answer: One example of an experiment you can do is find out the heat difference between a white car and a black car using the sun in a hot day.
Explanation: The black car would absorb more heat from the sun and would make the inside of the black car hotter than the white car.
i just need x isolated
Answer:
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Explanation:
[tex]rx+y=\frac{t}{x}\\\\x(rx+y)=(\frac{t}{x})x\\\\rx^2+yx=t\\\\rx^2+yx-t=t-t\\\\rx^2+yx-t=0[/tex]
Solve using the quadratic formula.
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Answer:
x=-y+[tex]\sqrt{[/tex]y^2+4rt/2r
Explanation:
solve using the quadratic equation
9. Liquid A has greater density than Liquid B. Which liquid will be exerting more pressure on the sides of the container?
Answer:
The depth of water near middle tube is greater so the water comes out with greater pressure from middle tube and falls farther away from the base of vessel. The depth of water near lowermost tube is the greatest so the water comes out of lowermost tube with the greatest pressure and goes farthest from the vessel.
1. A body has a velocity of 72 km/hr. Find its value in m/s.
72 Km/hr
= 72000 m/ 60×60 s
= 72000 m/ 3600 s
= 20 m/s
Answer is 20 m/s.
Hope it helps! Please do comment
A car is travelling down a road. A displacement vs. time graph for the car is shown below. What is the velocity of the car 6 s into the car's motion?
May you attach your displacement vs. time graph picture and resend the question once again then I might be able to help you
Which one is not physical quantity question is mistake
Answer:
Length
Explanation:
Answer:
length
hope it helps you
if you know the time it took an object to travel between two points and the position of the object at the points, can you determine the object's instantaneous velocity
Answer:
Yes
Explanation:
[tex]v = \frac{ds}{dt} \\ where \: we \: need \: to \: know \\ \: change \: in \: displacement \\ \: and \: the \: time \: taken[/tex]
if you know the time it took an object to travel between two points and the position of the object at the points, then we can determine the object's instantaneous velocity by using the differential rate of the displacement function with respect to the time.
Instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
velocity= displacement / time taken
for instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
Thus, If you know how long it took an item to go between two places and where it was when it got there, you can use the differential rate of the displacement function with respect to time to calculate the object's instantaneous velocity.
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After using soap to wash dishes by hand, if is sometimes difficult to keep your hands from remaining stick. Explain why rinshing your hand in lemon juice would make then less slick
Why are there only two elements in the first period of the periodic table?(1 point)
because the first two elements both start with H and are grouped together
because the next elements have other things in common and they need to be arranged together
because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
because each row increases in atomic mass by a specific number, so anything over five is in the second row
Answer:
because each row increases in atomic mass by a specific number, so anything over five is in the second row.
A car accelerates from rest at 6.6 m/s^2. How much time does it need to attain a speed of 7 m/s?
explanation:
Here,
initial velocity(u)=0m/sfinal velocity (v)=7m/sacceleration (a)=6.6m/s²time(t)=?Using Formula;
v = u + at
or, 7 = 0 + (6.6*t)
or, 7 = 6.6t
or 7/6.6 = t
or, t = 1.06s
I think it will help you....
A compass works because its magnetic needle
a. contain atoms
b. contain charged particles
c. repels magnet
d. spins freely
Answer
c. repels magnet
Some students collect some drops of water from a leaking tap.
The students measure the volume of the water they collect.
State the term for the equipment that is suitable for measuring the volume accurately.
Explanation:
The concept of temperature has evolved from the common concepts of hot and cold. Human perception of what feels hot or cold is a relative one. For example, if you place one hand in hot water and the other in cold water, and then place both hands in tepid water, the tepid water will feel cool to the hand that was in hot water, and warm to the one that was in cold water. The scientific definition of temperature is less ambiguous than your senses of hot and cold. Temperature is operationally defined to be what we measure with a thermometer. (Many physical quantities are defined solely in terms of how they are measured. We shall see later how temperature is related to the kinetic energies of atoms and molecules, a more physical explanation.) Two accurate thermometers, one placed in hot water and the other in cold water, will show the hot water to have a higher temperature. If they are then placed in the tepid water, both will give identical readings (within measurement uncertainties). In this section, we discuss temperature, its measurement by thermometers, and its relationship to thermal equilibrium. Again, temperature is the quantity measured by a thermometer.
The angle of reflection is equal to the angle of incidence……….. [ ] A) always B) sometimes C) never D) under special conditions
Answer:
A) alwaysthis is ur answer
two spherical objects one an insulation conductor and the other a conductor.negative charges are introduced at point A in each case .which would be the position of the charges.explain your observation.
Answer:
The charge move closer to conductor it it has any charge otherwise it remains at its place
sebuah titik p berjarak 2m dari muatan sebesar 5×10⁷c. besar potensial titik p adalah
Answer:
Explanation:
V=k*q/r
V= (9*10⁹) * 5*10⁷/2
V = 9*10⁹ * 25*10⁶
V = 225*10¹⁵
Sophie runs around an oval 5 mile track. What is Sophie's displacement and total distance ran?
Her displacement and distance are each 0.
Her displacement is O and her distance is 5 miles.
Her displacement is 5 miles and her distance is 0.
Her distance and displacement are each 5 miles.
Answer:
Her displacement is 0 miles and her distance is 5 miles.
Explanation:
Given information:
Sophie runs in an oval track. The length of track is 5 m.
Distance is the total length of path covered during motion while displacement is the shortest distance between initial and final position.
In this case, Sophie completes one cycle in the oval track and the track length is 5 m. So, the distance covered by her will be 5 m.
Now, after completing the track, the initial and final position of Sophie will be same and hence, the displacement she covered will be 0 miles.
Therefore, option "Her displacement is 0 mile and her distance is 5 miles" is correct.
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The displacement of Sophie is 0 and her distance is 5 m
The displacement of Sophie is the change in her position.
If she runs in an oval track, she will return to her initial starting position. The initial position and the final position will be equal, the change in her displacement will be zero.
[tex]\Delta x = x_f- x_i\\\\\Delta x = 5 - 5 = 0[/tex]
The distance traveled by Sophie is the sum of the total distance covered.
distance = 5 m
Thus, the displacement of Sophie is 0 and her distance is 5 m
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What becomes of the loss in mass of nuclei when heavy atoms split?
Answer:
when heavy atoms split the loss of mass is converted into kinetic energy
Explanation:
4.
Which of the following statement is correct
The density of an object does not remains same if we take small quantity of that substance.
The density of an object remains same irrespective of its shape, size and quantity.
The density of an object does not remains same irrespective of its shape and size.
The density of an object remains same only if its shape and size remains same.
The density of an object remains same irrespective of its shape, size and quantity.
Explanation:
Density is an intensive property. This means that regardless of the object's shape, size, or quantity, the density of that substance will always be the same. Even if you cut the object into a million pieces, they would still each have the same density. It is because density in an intensive property of matter.
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9. The map shows the migratory range of the
Florida manatee, an endangered species. In
tracking manatees, biologists determine the
animals' range. Conservation groups can use
such data to support plans for protecting
manatees from powerboats, which injure and kill
many manatees.
According to the map, where would
conservation groups want to concentrate their
efforts by talking to boaters during the winter?
A. Georgia and Florida
B. Alabama and Florida
C. Georgia and Alabama
D. South Carolina and Florida
Answer:
I think it's B
I hope it helps u
A diagram shows how gravity on Earth works on an object located in different spots in a seaside community. Where is gravity between Earth and an object the strongest?
A when the object is on the highest branch of a pine tree
B when an object is at sea level
C when the object is on top of a nearby mountain
D when the object is on top of a telephone pole
Answer:
B) when an object is at sea level
Explanation:
Answer:
When the object is at sea level
Explanation:
At the scene of an accident, a police officer notices that the skid marks of a car are 10m long. The officer knows
that the typical deceleration of a car when skidding is 45 m/s?. What can the officer estimate for the original
speed of the car?
Answer:
30 m/s
Explanation:
0^2= Vi^2+ 2 (-45)(10)
The original speed of the car is equal to 30m/s which can be calculated from the third equation of motion.
What is the equation of motion?Equations of motion explain the basic concept of motion such as the position, velocity, or acceleration of an object several times. These three equations of motion can be governed by the motion of an object in 1D, 2D, and 3D.
There are three equations of motion that can be used to find displacement(s), velocity (v or u), time(t), and acceleration(a). The third equation of motion can be represented as follows:
v² = u² + 2aS
Given, the car is deaccelerated by 45m/s².
The distance covered by the car before it stops, S = 10 m
The final velocity of the car, v = 0 as it comes to rest.
We have to calculate the initial velocity of the car by using the third equation of motion:
(0)² = (u)² + 2 (-45) × (10)
u²= 900
u = 30 m/s
Therefore, the original speed of the car is 30 m/s.
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In the opposite figure, what is the
value of equivalent resistance
between (a) and (b)
A-3 Ω
B-6 Ω
C-9 Ω
D-13.5 Ω
Answer:
9
Explanation:
since the resistance is not changing
An atom’s location on the periodic table provides information such as…
An atom’s location on the periodic table provides information such as;
1. Atomic number.
2. Number of valence electrons.
3. Atomic weight.
An atom can be defined as the smallest unit which comprises the matter that forms all chemical elements. Thus, atoms are typically the fundamental building blocks of matter and as such determines (defines) the structure of a chemical element.
Generally, atoms are typically made up of three (3) distinct particles and these are;
Protons. Neutrons. Electrons.Periodic table is an organized tabular array of all the chemical elements arranged in order of increasing atomic number (in rows).
Generally, an atom’s location on the periodic table (the group of elements it belongs to) provides information such as;
1. Atomic number.
2. Number of valence electrons.
3. Atomic weight.
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difference between uniform velocity and variable velocity
Explanation:
when a body covers equal distance in equal interval of timein a specific direction it is said to have uniform velocity . when a body covers unequal distance in equal interval of time in a specified direction , it is said to have variable velocity .If an object is projected horizontally from a height of 5 m with an initial velocity of 7 m/s, what is the value of x^0?
x0=−9.8 m/s2
x subscript 0 baseline equals negative 9.8 m per s squared
x0=0
x subscript 0 baseline equals 0
x0=5
x subscript 0 baseline equals 5
x0=7
The horizontal displacement (x₀) of the object is 7 m.
The given parameters;
height of the object projection, h = 5 minitial horizontal velocity of the object, uₓ = 7 m/sThe vertical displacement equation of the object is given as;
h = vt + ¹/₂gt²
where;
v is the initial vertical velocity = 0
The time of motion is calculated as;
5 = 0 + (0.5 x 9.8)t²
5 = 4.9t²
[tex]t^2 = \frac{5}{4.9} \\\\t^2 = 1.02\\\\t = \sqrt{1.02} \\\\t = 1 \ s[/tex]
The horizontal displacement of the object is calculated as;
X₀ = uₓt
X₀ = 7 x 1
X₀ = 7 m
Thus, the horizontal displacement (x₀) of the object is 7 m.
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why is there more potential for wind energy in the upper himalayan in nepal?
Answer:
The potential area of wind power in the country is about 6074 sq. km with wind power density greater than 300 watt/m2. More than 3,000 MW of electricity could be generated at 5 MW per sq km. The commercially viable wind potential of the country is estimated to be only about 448 MW.
.
Give two example of bodies that you see in daily lives,which are streamlined to reduce friction
Answer:
1) ironing a shirt 2) writing on surfaces 3) working of an eraser
A car accelerates from 7.0 m/s to 12.0 m/s in 5 s. What is the average acceleration for this time interval?
A. 25 m/s2
B. 3.8 m/s2
C. 1 m/s2
D. -1 m/s2
Answer:
A. 25 m/s2
hope it's right
If a car accelerates from 7.0 m/s to 12.0 m/s in 5 s, then the average acceleration for this time interval would be 1 m/s2.
Therefore the correct answer is option C.
What is acceleration?The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².
As given in the problem If a car accelerates from 7.0 m/s to 12.0 m/s in 5 s, then w have to calculate the average acceleration for this time interval,
By using the first equation of motion,
v = u +at
12 = 7 + 5a
5a = 5
a = 1 m/s²
Thus, the average acceleration of the car comes out to be 1 m/s², therefore the correct answer is option C.
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10. Scientists try to develop an explanation for what
they see happening in the natural world. What
must be true of any explanation they develop?
A. It must be supported by evidence.
B. It can never be changed.
C. It must be shown to have practical value for
humans.
D. It must be based on information that other
scientists have also gathered.
Answer:
it must be based on information that other scientists have also gathered
Answer:
hope its ok
Explanation:
Science is a way of learning about what is in the natural world, how the natural world works, and how the natural world got to be the way it is. It is not simply a collection of facts; rather it is a path to understanding.so it should contain a logical theory but it can also never be said as the final answer.
so A) OR D) both are correct
