Answers
Answer:
i think that you are right becuase when the line goes down it goes back up and passes 10 and goes down and passes 20 and 20 is 2 10's and 10-10 is 0
Explanation:
i think your right
Related Questions
Which of the following are correct units for acceleration? Chooses all that are correct.
m/s/s
km/hr/hr
m/s
s
km/hr/s
m
m/hr
Answers
Base your answers to questions 4 and 5 on the informa- tion below
A lightweight sphere hangs by an insulating thread. A student wishes to determine if the sphere is neutral or electrostatically charged. She has a negatively charged hard rubber rod and a positively charged glass rod. She does not touch the sphere with the rods, but runs tests by bringing them near the sphere one at a time.
4. Describe the test result that would prove that the sphere is neutral
5. Describe the test result that would prove that the sphere is positively charged.
Answers
If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
What is an electrical charge?An electrical charge can be positive or negative. From the laws of electrostatics, unlike charges attract while like charges repel. As such the effect observed when the rods are individually brought near the sphere will decide the charge on the sphere.
If the sphere is neutral, there is no effect observed when each rod is brought near the sphere. If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
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Which features would the scientists most likely see for samples from multicellular organisms
Answers
Answe
common checks
Explanation:
A jet takes off from an aircraft carrier starting from rest and travels 93 m [fwd] in 1.2 s when being pushed by the catapult. What is its final velocity at takeoff?
Answers
The final velocity of the Jet from the takeoff is 15.5 m/s.
Final velocity of the Jet
The final velocity of the jet is determine by applying second kinematic equation, using the principle of average velocity as shown below.
s = (u + v)t/2
where;
s is the distance traveled by the Jetu is the initial velocity of the jetv is the final velocity of the jett is the time of motions = (0 + v)t/2
2s = vt
v = 2s/t
v = (2 x 9.3) /1.2
v = 15.5 m/s
Thus, the final velocity of the Jet from the takeoff is 15.5 m/s.
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What is the purpose of Physical Science?
to improve technology that affects our quality of life
to explain and predict phenomena that affect our view of the universe
all answers are true
to answer everyday questions
WHOEVER ANSWERS FIRST GET BRAINLIEST
Answers
a. What is the S.l unit of acceleration?
m
m/s o
m/s2
N
Answers
Explanation:
The SI unit of acceleration is the metre per second squared (m s−2); or "metre per second per second", as the velocity in metres per second changes by the acceleration value, every second.
All of the following are types of schizophrenic disorders except __________ schizophrenia. A. Catatonic B. Paranoid C. Differentiated D. Disorganized.
Answers
All of the following are types of schizophrenic disorders except Disorganized.
What is schizophrenia?Schizophrenia is a chronic brain disease that affects fewer than 1% of the population in the United States. Symptoms of schizophrenia include delusions,
Hallucinations, disordered speech, difficulty thinking, and a lack of desire. Most symptoms of schizophrenia can be considerably improved with therapy, and the risk of recurrence can be reduced.
Despite the fact that there is no cure for schizophrenia, research is leading to new and safer therapies.
Experts are also examining genetics, performing behavioral studies, and utilizing modern imaging to examine the structure and function of the brain to figure out what causes the condition.
These methods carry the prospect of developing new and more effective treatments.
All of the following are types of schizophrenic disorders except Disorganized.
Hence all of the following are types of schizophrenic disorders except for Disorganized.
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Answer:
C.
Explanation:
I got it right
A 55.0 kg runner who weighs 539.0 N is accelerating at 3.2 m/s2. After 2
seconds, she reaches a speed of 6.4 m/s. What is her momentum at this
point?
A. 176.0 kg-m/s
B. 8.6 kg-m/s
C. 352.0 kg-m/s
D. 84.0 kg-m/s
Answers
Answer:
C. 352.0 kg-m/s
Explanation: Took the test on APEX
Answer:
The answer is C. 352.0 kg-m/s
How does the balls potential energy relate to the amount of work needed to place the ball on the 2 m shelf
Answers
How does changing the horizontal position of the ball affect its potential energy? Horizontal position has no effect on gravitational potential energy. The factors that affect an object's gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in. because it builds speed due to gravity, while its potential energy begins to decrease, because it is no longer as far from the ground. Just before it hits the ground, the ball has almost no potential energy and a lot of kinetic energy.
What has more potential energy: a boulder on the ground or a feather 10 feet in the air? (Answer: The feather because the boulder is on the ground and has zero potential energy. However, if the boulder was 1 mm off the ground, it would probably have more potential energy.) Other examples of items with gravitational potential energy include:
A raised weight.
Water that is behind a dam.
A car that is parked at the top of a hill.
A snow pack (potential avalanche)
A yoyo before it is released.
River water at the top of a waterfall.
A book on a table before it falls.
A child at the top of a slide. The actual potential energy of an object depends on its position relative to other objects. For example, a brick has more potential energy suspended off of a two-story building than it does resting on the ground. That's because the brick's relative position to the Earth gives it more energy. The amount of gravitational potential energy an object has depends on its height and mass. The heavier the object and the higher it is above the ground, the more gravitational potential energy it holds. Gravitational potential energy increases as weight and height increases. PEgrav = m *• g • h
In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity.
Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height to which it is lifted. PE = kg x 9.8 m/s2 x m = joules. PE = lbs x ft = ft lb.
We place the zero point of gravitational potential energy at a distance r of infinity. This makes all values of the gravitational potential energy negative. It turns out that it makes sense to do this because as the distance r becomes large, the gravitational force tends rapidly towards zero. When a ball is dropped gravity pulls the ball toward the ground, slowing the ball down so that each bounce is shorter and shorter, until eventually the ball stops bouncing. The force of the ball hitting the hard ground puts an equal force back onto the ball, meaning it bounces back up. During a collision, some of the ball's energy is converted into heat. As no energy is added to the ball, the ball bounces back with less kinetic energy and cannot reach quite the same height. ... It reaches way higher than from the height it was released. If you define "bouncing" as leaving the ground for any amount of time, the ball stops bouncing when the elastic energy stored in the compression phase of the bounce is not enough to overcome the weight of the ball. ... Some energy is dissipated in the compression and decompression phases.
gravity increases with height. gravity is significantly less on high mountains or tall buildings and increases as we lose height (which is why falling objects speed up) gravity is caused by the Earth spinning. gravity affects things while they are falling but stops when they reach the ground.
After hundreds of years of observation and experimentation, science has classified energy into two main forms: kinetic energy and potential energy. In addition, potential energy takes several forms of its own. Kinetic energy is defined as the energy of a moving object.
Potential Energy of the ball = Amount of work needed to place the ball on the 2 m shelf = [tex]19.62 \times m = f(mass \; of\; balls )[/tex]
By the definition of work
[tex]Work = F.ds......(1)[/tex]
Let us consider a ball having mass = [tex]m[/tex]
Weight of the ball = [tex]mg[/tex]
Equation (1) defines Work.
If the work is to be done against acceleration due to gravity of earth
then the work needed to keep the ball at height [tex]h[/tex] is given by equation (2)
[tex]Work = mg\times h[/tex]......... (2)
Also the Potential Energy of mass m kept at height h is given by equation (3)
[tex]Potential \; Energy = mgh[/tex]......(3)
given
The height of the shelf = 2 m
So From Equation (1) and (2) we get
[tex]Work = Potetial Energy = 19.62\times m \; Joule[/tex]
So both Work and Potential Energy are equal in this case and function of masses of the balls.
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A car moves at 72 km/h and car B moves at 90 km/h, approach each other. A car honked with a frequency of 650 Hz. If the speed of the sound waves in the air is 350 m/s, then what is the frequency of sound heard by the driver of car B from car A?
Givens:
Equation:
Solution:
Unit:
Substitution:
Answers
The frequency of the sound heard by the driver of car B from car A is mathematically given as
F=738.6hz
What is the frequency of the sound heard by the driver of car B from car A?Question Parameters:
A car moves at 72 km/h and car B moves at 90 km/h, approaching each other. A car honked with a frequency of 650 Hz
the speed of the sound waves in the air is 350 m/s,
Generally, the equation for the Frequency is mathematically given as
[tex]F=f'(\frac{v+vob}{v-vsource})[/tex]
Therefore
[tex]F=650(\frac{350+25}{350-20})[/tex]
F=738.6hz
In conclusion, the frequency of the sound is
F=738.6hz
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2. A train travels at a speed of 30mph and travel a distance of 240 miles. How
long did it take the train to complete it’s journey?
Answers
Answer:
Speed = Distance/ Time
Time= Distance/ Speed
=240/30= 8 hours
Explanation:
Hope this helps u
Crown me as brainliest:)
A penny falls from a windowsill which is 2.5 m above the sidewalk
Answers
Answer:
The answer is 22.14 meters per second
Explanation:
I gotchu brother
Which element is magnetic?
O calcium
O chromium
O carbon
O cobalt
Answers
Answer: D. Cobalt
Explanation: Cobalt has excellent magnetic properties so it is D. Cobalt.
The element which has magnetic properties from the given list of elements would be cobalt , therefore the correct answer is option C.
What are metalloids?The elements of the periodic tables that behave as metals, as well as the nonmetal in some chemical or physical aspects, are known as metalloids. Some examples of metalloids are Boron , silicon , germanium, arsenic , antimony , tellurium , etc.
As given in the problem we have to find out the element which possesses the magnetic properties from the given list ,
Calcium belongs to group 2 of the periodic table and nonmagnetic element . Similarly , carbon is a nonmagnetic material .
Thus , the element which has magnetic properties from the given list of elements would be cobalt, therefore the correct answer is option C .
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lf an object's velocity changes from 25 meters per second to 15 meters per second in 2.0 seconds, the magnitude of the object's acceleration is
Answers
Answer:
-5 m/s^2
Explanation:
[tex]acceleration = \frac{change \: in \: velocity}{time} \\ \\ = \frac{15 - 25}{2} \\ \\ = \frac{ - 10}{2} \\ \\ = - 5 \: m {s}^{ - 2} \\ \\ negative \: sign \: represents \: that \: \\ object \: is \: slowing \: down.[/tex]
Explanation:
Acceleration is the change in velocity over time.
a = Δv / Δt
a = (15 m/s − 25 m/s) / 2.0 s
a = -5.0 m/s²
The magnitude of the acceleration is 5.0 m/s².
You look down an old well, cannot see the bottom, and mutter to yourself "Oh well!". In order to estimate the depth of the well, you then drop five stones and record the time for each to impact: 2.19s, 2.30s, 2.26s, 2.29s, and 2.27s. What is the best estimate of the depth of the well? Explain your reasoning.
Answers
Answer:
The best estimate of the depth of the well is 2.3 sec.
Explanation:
Given that,
Record time,
[tex]t_{1}=2.19\ sec[/tex]
[tex]t_{2}=2.30\ sec[/tex]
[tex]t_{3}=2.26\ sec[/tex]
[tex]t_{4}=2.29\ sec[/tex]
[tex]t_{5}=2.27\ sec[/tex]
We need to find the best estimate of the depth of the well
According to record time,
We can write of the record time
[tex]t_{1}=2.19\approx 2.2\ sec[/tex]
[tex]t_{2}=2.30\approx 2.3\ sec[/tex]
[tex]t_{3}=2.26\approx 2.3\ sec[/tex]
[tex]t_{4}=2.29\approx 2.3\ sec[/tex]
[tex]t_{5}=2.27\approx 2.3\ sec[/tex]
Here, all time is nearest 2.3 sec.
So, we can say that the best estimate of the depth of the well is 2.3 sec.
Hence, The best estimate of the depth of the well is 2.3 sec.
PLEASE HURRY! :) TEN POINTS + BRAINLIEST TO 1ST CORRECT ANSWER!
What occurs when someone places an ice pack on an injured ankle? Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. Cold from the ice pack is transferred to the ankle. Heat from the ankle is transferred to the ice pack.
Answers
Answer:
I think it is C. cold from the ice pack is transferred to the ankle
Explanation:
Hope I helped if I did plz give me brainiest thanks <3
Answer:
Hello
well u have already mentioned the answer in the question itself.....
Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. ... Heat from the ankle is transferred to the ice pack.
A 600 W electric heater is connected to a 120 V source. Calculate its current.
Answers
Question :-
A 600 Watt electric heater is connected to a 120 Volt source . Calculate its Current .Answer :-
Current is 5 Ampere .Explanation :-
As per the provided information in the given question, we have been given that the Power is 600 Watt , Voltage is given as 120 Volt . And, we have been asked to calculate the Current .
Now, for calculating the Current , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf{ \: Current \: \: = \: \: \dfrac{ \: Power \: }{Voltage} \: }} \\ [/tex]
Therefore, by Substituting the given values in the above Formula :-
[tex] \dag \: \: \: \sf {Current \: \: = \: \: \dfrac{\: Power \:}{Voltage}} \\ [/tex]
[tex] \longmapsto \: \: \sf {Current \: \: = \: \: \dfrac {\: 600 \:}{120}}[/tex]
[tex] \longmapsto \: \: \bf {Current \: \: = \: \: 5 \: Ampere} [/tex]
Hence :-
Current = 5 Ampere .[tex] \underline {\rule {89pt}{4pt}} \: \: \underline {\rule {89pt}{4pt}} [/tex]
what do you mean by mechanical advantage is 2.5 of a machine?
Answers
Answer:
If you are using a machine that has a mechanical advantage of 2.5,you will have increased your EFFORT DISTANCE by 2.5 times. This allows you to REDUCE the EFFORT FORCE needed by 2.5 times.
Suppose the line on a distance-versus-time graph and the line on a speed-versus-time graph are both slanted straight lines going through the origin. Can the two graphs be displaying the motion of the same object? Explain.
Answers
The two given graphs can be displaying the motion of the different objects. As the distance-versus-time graph shows the speed is constant while the speed-versus-time graph shows the uniform acceleration motion.
What is uniform acceleration motion?A uniformly accelerated motion is one in which the acceleration of the object throughout the motion is uniform. When an object is moving in a straight line with an increase in velocity at equal intervals of time, then we can say that object has uniform acceleration.
Projectile motion is an example of motion in a plane with uniform acceleration. The only acceleration acting on the particle is the acceleration due to gravity (g) in the case of projectile motion. Since there is no acceleration in the horizontal direction, the velocity in the x-direction will be constant.
In the distance-versus-time graph, the straight line passing through the origin shows the increase in the distance at equal intervals of time. So, the speed of the object will be constant.
The speed-versus-time graph shows the increase in the speed at equal intervals of time. So, the acceleration of the object will be constant. So this is the graph of the motion of a different object.
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If the speed of a wave is
150m/s and its frequency is
2Hz, what is its wavelenght?
Answers
Answer:
wavelength =75m
using v=fΠ
where Π is wavelength
When gas in a container expands to three times its volume at constant temperature, the gas pressure?
A) is one third.
B) is one ninth.
C) triples.
D) remains the same
Answers
Answer:
A) is one third
because according to Boyle's law pressure is inversely proportional to the volume
PLEAS HELPM ME FASTTT MARKING PERIOD IS ABOUT TO END.
Most areas have two high and two low tides each day, this is called ___________.
Question 2 options:
gravity
semi-diurnal
low tide
Answers
Answer:
the answer is semidiurnal
Answer:
I think it is semi-diurnal :)
Hope this helps!!
Have a great day!!
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The wheel is composed of a 10-kg hoop stiffened by four thin spokes, each with a mass of 2 kg. A hori- zontal force of 40 N is applied to the wheel initially at rest. Calculate the angular velocity of the wheel after its center has moved 3 m. Friction is sufficient to prevent slipping.
Answers
For a wheel composed of a 10-kg hoop stiffened by four thin spokes and each with a mass of 2 kg, the angular velocity is mathematically given as
w=1.165 rad/s
What is the angular velocity of the wheel after its center has moved 3 m.?Generally, the equation for the angular velocity is mathematically given as
[tex]V = \sqrt{(F * r/m)[/tex]
Therefore
[tex]V= \sqrt{(40 x 0.3 / 98.1)[/tex]
V= 0.35 m/s
Where
w=v/r
w= 0.35/0.3
w=1.165 rad/s
In conclusion, the angular velocity is
w=1.165 rad/s
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What best describes the pitch that juan hears? the pitch remains constant as the ambulance moves toward and then away from juan. the pitch increases and decreases in a repeated pattern as the ambulance passes juan. the pitch drops to a lower pitch once the ambulance passes by juan. the pitch increases to a higher pitch once the ambulance passes by juan.
Answers
The correct answer is "the pitch drops to a lower pitch once the ambulance passes by Juan".
What is the Doppler effect?When there is relative motion between the source and the listener, the Doppler effect causes the frequency to rise or decrease. The frequency determines the pitch. When the frequency rises, the pitch rises with it.
When the source and the listener get closer to each other, the frequency rises. There is a reduction in frequency as the source and listener move away from each other.
Juan is standing on the street in the provided situation. When an ambulance approaches Juan and then passes by, the pitch dips to a lower level.
Hence "The pitch decreases to a lower pitch once the ambulance passes by Juan," is the right answer.
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Answer:
Explanation:
c.the pitch drops to a lower pitch once the ambulance passes by Juan
jana is drying her hair using 120 v source of power with a current of 12.5A. How many watts of power is her hair dryer using
Answers
Hi there!
Recall the following equation:
[tex]\large\boxed{P = IV}[/tex]
P = Power (W)
I = Current (A)
V = Voltage (V)
Plug in the given values to solve for power:
[tex]P = 120 * 12.5 = \boxed{1500 W}[/tex]
Which is the best example of a scientific discovery resulting from new technology?
the discovery that elements can be grouped in a table on the basis of their properties
the discovery of atomic structure which led to the development of an electron microscope
the discovery of the structure of DNA, which occurred as the result of an X-ray image of a DNA molecule
the discovery that plant pigments can be separated and identified by using paper and a solvent
Answers
third
Explanation:
i think so because finding structure of dna can help a lot for well being of human being
The force that keeps an object moving in a circle is called.
Answers
3. A boy does 15 Joules of work to push a cart covering 2.5 meters. How much force did he use?
Given:
Solve For:
Solution:
Answers
Answer: 6 N
Explanation: W (WORK) = 15 JOULES
S (DISTANCE) = 2.5 m
F (FORCE) = ?
BY USING FORmULA OF WORK DONE
W = F.S
F =W/S
F = 15/2.5
F = 6 N
An object with a mass of 2kg accelerates 3.5m/s2, what is the amount of force being applied to it?
Answers
Answer:
Force = 7N
Explanation:
Force = Mass x Acceleration = 2 x 3.5 = 7N
Students who have no interest or
active role in their learning are
in the classroom.
A. busy
B. passive
C. active
Answers
Answer:
The answer is B. passive
Explanation:
Answer:
passive
Explanation:
i say this because it makes the most sense to me and most of the time in the questions they go for the answer that makes the most sense so my final answer is (B.)