Which ordered pair on a distance versus time graph represents a distance of 1 km and a time of 10 minutes? (10,1) (1,10) (1,9) (9,1)
Answers
Answer:
(10,1)
Explanation:
Given: distance of 1 km and time taken 10 minutes.
To Find: Which ordered pair represents a distance of 1 km and a time of 10 minutes in distance time graph.
Solution:
Consider the file attached.
We know that any point in a graph with point [tex]\text{x}_{i}[/tex] on x-axis and [tex]\text{y}_{i}[/tex] on y-axis=[tex](\text{x}_{i},\text{y}_{i})[/tex]
in a distance versus time graph,
Y-axis represents Distance and X-axis represents Time
plotting the points in Distance versus time graph,
distance [tex]1\text{km}[/tex] is plotted on Y-axis
Time [tex]10\text{minutes}[/tex] is plotted on X-axis
from graph,
the ordered pair for distance of [tex]1\text{km}[/tex] and Time [tex]10\text{minutes}[/tex] is represented by [tex](10,1)[/tex].
Related Questions
Chemical properties of an acid include...
Corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and forms salt and water when added to a base.
Corrosive, tastes sour, forms hydrogen gas when it comes in contact with a metal, and feels sticky to the touch.
Corrosive, increases the concentration of hydrogen ions when added to water, reacts with metals to form Hydrogen, and tastes sour.
Taste sour, increases the concentration of hydrogen ions when added to water, frequently burn nose when smelt, and forms salt and water when added to a base.
Answers
Answer: Option (a) is the correct answer.
Explanation:
Chemical properties are defined as the properties that show chemical nature of a substance or compound.
For example, toxicity, reactivity, combustion etc are all chemical properties.
Properties in which there is no change in chemical nature of a substance is known as physical property.
For example, solubility, density, volume, mass etc are all physical properties.
When a substance becomes corrosive in nature then it means oxidation of substance has occurred.
When concentration of hydrogen ions increases then it means acidity of a substance increases.
When an acid comes in contact with a metal then it releases hydrogen atoms.
For example, [tex]2HCl + Mg \rightarrow MgCl_{2} + H_{2}[/tex]
When we add an acid to a base then it will result in the formation of salt and water.
For example, [tex]HCl + NaOH \rightarrow NaCl + H_{2}O[/tex]
An acid does not feel slippery but a base feels slippery on touch.
Thus, we can conclude that chemical properties of an acid include corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and forms salt and water when added to a base.
When you lift a book from the ground to your desk, what kind of work do you do, negative or positive? By lifting the book, what do you change? Does the book gain or lose energy? What kind of energy?
Answers
"You lose energy where as book gains energy. Therefore, positive work on book, negative on you."
a non reactive metal can be identified from other metals because it's surface is?
Answers
A baseball team is practicing throwing balls vertically upward to test their throwing arms. A player manages to throw a ball that reaches a maximum altitude of 10 m above the launch point, before falling back down. The acceleration due to gravity is 9.80 m/s 2 . (a) With what initial speed was the ball thrown?
Answers
This law states that energy in a closed system must stay same.
That means that the energy of a ball leaving the hand and the energy of a ball when it reaches its maximum height must be the same.
The energy of a ball leaving the players hand is kinetic energy:
[tex]E_k=\frac{mv^2}{2}[/tex]
The energy when the ball reaches its maximum height ( and has zero velocity) is potential energy in a gravitational field:
[tex]E_p=mgh[/tex]
As said before these energies must be the same, and that allows us to find the initial speed:
[tex]E_k=E_p\\ \frac{mv^2}{2}=mgh\\ v^2=2gh\\ v=\sqrt{2gh}[/tex]
When we plug in all the number we get that [tex]v=14\frac{m}{s}[/tex]
Bowling United States know that water boils at 212°F in Europe people know that the water boils at 100°C is the water in the US different than the water in Europe what explains the two different temperatures
Answers
how high is a 0.5 kg squirrel sitting if it has 36 j of energy
Answers
7.35 meters above ground
The squirrel is sitting at a height of 7.35 m.
The energy possessed by a body by virtue of its position is called potential energy.
If the squirrel has a mass m and if it sits at a height h then, the potential energy E of the squirrel is given by,
[tex] E=mgh [/tex]
here, g is the acceleration due to gravity.
Given:
[tex] m=0.5 kg;E=36 J [/tex]
Take the value of acceleration due to gravity [tex] g=9.8 m/s^2 [/tex]
Rewrite the equation for energy in terms of h.
[tex] h=\frac{E}{mg} [/tex]
Substitute the given values and calculate the value of h.
[tex] h=\frac{E}{mg} \\ =\frac{36 J}{(0.5 kg)(9.8 m/s^2)} \\ =7.35 m [/tex]
The squirrel is at a height of 7.35 m
A block with mass m1 = 4.50 kg and a ball with mass m2 = 7.70 kg are connected by a light string that passes over a frictionless pulley, as shown in figure (a). The coefficient of kinetic friction between the block and the surface is 0.300.
(a) Find the acceleration of the two objects and the tension in the string.
(b) Check the answer for the acceleration by using the system approach. (Use the following as necessary: m1, m2, μk, and g.)
(c) What if an additional mass is attached to the ball? How large must this mass be to increase the downward acceleration by 60%?
For (a) I calculated acceleration to be 5.10 m/s^2 and tension to be 36.2N.
For (b) I the equation is a = (m2g-ukm1g)/(m1+m2)
It is (c) that I cannot figure out. Can anybody please help me?
Answers
The force acting on objects connected by a string results in a tension in the string
(a) The acceleration of the two objects is approximately 5.106 m/s²The tension in the string is approximately 36.2208 N
(b) [tex]The \ acceleration, \ a= \dfrac{Tension \ in \ string, T - Friction \ force,\, F_f}{Mass \ of \ block, \ m_1}[/tex](c) To increase the downward acceleration by 60%, the required additional mass to add is approximately 22.78 kgThe reasons why the above values are correct are as follows:
The given parameters are;
Mass of the block, m₁ = 4.50 kg
Mass of the ball, m₂ = 7.70 kg
Path over which the string connecting the two blocks passes = Frictionless pulley
Coefficient of friction between the block and the surface, μ = 0.300
Required:
(a) To find the acceleration of the two objects and the tension in the string
Solution:
The motion of the system is due to the weight of the ball, m₂·g
The opposing force to motion of the system is due to friction of the block, m₁·g·μ
The block and the ball connected by the string have a common acceleration given as follows;
(m₁ + m₂) × a = m₂·g - m₁·g·μ
Where;
a = The acceleration of the two objects
Therefore, we get;
[tex]a = \dfrac{g\cdot (m_2 - m_1\cdot \mu_k)}{m_1 + m_2}[/tex]
Which gives;
[tex]a = \dfrac{9.81 \times (7.70 - 4.50\times 0.300)}{4.50 + 7.70} \approx 5.106 \ m/s^2[/tex]
The acceleration of the two objects, a ≈ 5.106 m/s²
Tension in the string:
Tension in the string, T = m₂×(g - a)
∴ T = 7.70 × (9.81 - 5.106) ≈ 36.2208
The tension in the string, T ≈ 36.2208 N
(b) The force due tension in the string is given as follows
The force due to friction = 4.50 × 9.81 × 0.300 = 13.2435
Force due to friction, [tex]F_f[/tex] = 13.2435 N
Net force acting on block, F = T - [tex]F_f[/tex]
∴ F = 36.2208 N - 13.2435 N = 22.9773 N
The acceleration of the block, a, is given as follows;
[tex]a = \dfrac{22.9773}{4.5} \approx 5.106[/tex]
Therefore, the acceleration, a is correct as a ≈ 5.106 m/s²
(c) From the equation for acceleration, we have;
[tex]a = \dfrac{g\cdot (m_2 - m_1\cdot \mu_k)}{m_1 + m_2}[/tex]
When the acceleration is increased by 60%, we get
60% increase of a = 1.6·a, and the new mass of the ball = m₃, which gives;
[tex]1.6 \cdot a = \dfrac{g\cdot (m_3 - m_1\cdot \mu_k)}{m_1 + m_3}[/tex]
Plugging in the known values of a, m₁, g, and [tex]\mu_k[/tex] gives;
[tex]1.6 \times 5.106 = \dfrac{9.81\times (m_3 - 4.5\times 0.300)}{4.50 + m_3}[/tex]
1.6 × 5.106 × (4.50 + m₃) = 9.81 × (m₃ - 4.5×0.300)
8.1696·m₃ + 36.7632 = 9.81·m₃ - 13.2435
9.81·m₃ - 8.1696·m₃ = 36.7632 + 13.2435 = 50.0067
1.6404·m₃ = 50.0067
[tex]m_3 = \dfrac{50.0067}{1.6404} \approx 30.48[/tex]
The added mass Δm = m₃ - m₂
∴ Δm = 30.48 kg - 7.70 kg = 22.78 kg
The required additional mass to increase the downward acceleration by 60%, Δm = 22.78 kg
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In Faraday's experiment if instead of moving the magnet towards the coil we move the coil towards the magnet, will there be any induced current? Justify. Compare 2 cases
Answers
In fact, Faraday Neumann Lenz law says that a variation of the magnetic flux enclosed by a circuit produces an induced electromotive force in the circuit itself (and so an induced current), and the intensity of this e.m.f. is equal to the negative of the variation of the flux in time:
[tex]\epsilon = - \frac{d \Phi _B}{dt} [/tex]
If we are moving the magnet towards the coil, we are increasing the magnetic flux through the area enclosed by the coil (because the intensity of the field becomes stronger). If instead we moves the coil towards the magnet, we are still increasing the magnetic flux through the area enclosed by the coil, because the coil is coming closer to the magnet and therefore the field intensity is increasing. Therefore, the net effect will remain the same, and so the induced current will be the same in the two situations.
if a droplet has 3 extra electrons, what is its measured charge? A. 1/3 of an elementary charge B. 1 elementary charges. C. 2 elementary charges. D. 3 elementary charges.
Answers
Hope this helps!!!
:)
If a droplet has 3 extra electrons, the measured charge will be three elementary charges.
Elementary charges:It is the amount of charge carried by a single photon or electron. It is a physical constant that has the value of about [tex]1.6 \times 10^{-19 } \rm \ C[/tex].If a droplet has 3 extra electrons means it has 3 extra elementary charges.The charge will be 3 x [tex]1.6 \times 10^{-19 } \rm \ C[/tex].Therefore, if a droplet has 3 extra electrons, the measured charge will be three elementary charges.
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plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help plz :(
In order for a fish to see a bug just above the surface of the water, the image of the bug travels in the form of light waves from the insect through the air and crosses into the water until it reaches the fishes' eye. Which statement is true regarding the light wave as it travels?
Question 7 options:
a.The light waves will bounce off the surface of the water and the fish will see it.
b.The light waves will bend as they hit the water and slow down because water is a more dense medium than air.
c.The light waves will travel straight from the bug to the fishes' eye because that is the most direct path.
d.The light waves will travel straight from the bug to the fishes' eye because there is no change in medium.
Answers
The bending of light is refraction, and this occurs because there is a change in medium that the light travels through. Water is optically denser than air. Hence, when light enters water, it is refracted closer to the normal.
A batter hits two baseballs with the same force. One hits the ground near third base. The other is a home run out of the park. Where was there more work done?
a. The ball that went out of the park shows more work because the force applied was greater.
b. The ball that hit near third base shows more work because it hit the ground much harder.
c. The ball that went out of the park shows more work because the distance was greater.
d. The ball that hit near third base shows more work because the force applied was greater.
Answers
More work was done on the baseball that went out of the park because it traveled a greater distance. Work in physics is determined by applying a force over a distance.
Explanation:In physics, work is defined as the amount of energy transferred by a force over a distance. The equation for work is 'W = Fd' where 'W' is work, 'F' is force, and 'd' is distance. In the question given, the force applied to both baseballs was the same but the distances they traveled were different. The baseball that went out of the park traveled a greater distance. Therefore, more work was done on the ball that went out of the park, because the same force moved it over a greater distance. So the correct answer is 'c. The ball that went out of the park shows more work because the distance was greater.'
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How are the energy of infrared, visible light and ultraviolet rays related? And why?
A) Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is proportional to its wavelength.
B) Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is proportional to its wavelength.
C)
Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is inversely proportional to its
wavelength.
D)
Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is inversely proportional to its
wavelength.
Answers
Answer: The correct answer is Option C.
Explanation:
Energy of the Electromagnetic Spectrum is given by the Planck's equation:
[tex]E=h\nu[/tex]
Where,
E = Energy of the wave
h = Planck's constant
[tex]\nu[/tex] = Frequency of the wave
And we know that,
[tex]\nu=\frac{c}{\lambda}[/tex]
where,
c = Speed of light
[tex]\lambda[/tex] = Wavelength of the wave
Putting the value of frequency in energy equation, we get:
[tex]E=\frac{hc}{\lambda}[/tex]
From the above relation, we get that energy is inversely related to wavelength of the wave.
From the spectra, we know that order of wavelength follows:
Infrared > Visible > UV
So, the order of energy gets reversed and the order becomes:
Infrared < Visible < UV
From the above information, we conclude that the correct option is Option C.
What is the effect:
Cause: A stationary front forms
Effect: ________________________________________.
Answers
A stationary front leads to prolonged weather conditions, primarily characterized by mild but continuous precipitation and consistent cloud cover, due to the stalemate between two contrasting air masses. These conditions can persist for several days, potentially resulting in flooding or affecting local climate and activities.
Explanation:When a stationary front forms, the effect is typically prolonged weather patterns in the affected area due to the stalemate between two contrasting air masses. Neither air mass is able to dominate the other, leading to an extended period of clouds and mild but prolonged precipitation. This can result in several days of consistent weather, with potential impacts on local climate, agriculture, and daily activities. Stationary fronts are characterized by their lack of movement, meaning that the weather conditions they bring (like precipitation or cloud cover) can persist over an area much longer than with moving fronts.
Unlike cold fronts, which can bring rapid and significant changes in weather, including a drop in temperature and possible severe weather, stationary fronts lead to more steady weather conditions. However, the extended period of precipitation associated with stationary fronts can contribute to flooding and other water-related issues, depending on the region and other environmental factors.
Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What is one advantage that asexual organisms have that helps them to overcome these disadvantages? A. They have higher reproductive rates. B. They use energy more efficiently. C. They never need to sleep. D. They are able to find food easier.
Answers
a) they have higher reproductive rates
What causes changes in weather?
Answers
Select all of the examples of a base.
Vinegar
Baking soda
Lemons
Tomatoes
Bleach
Soap
Bananas
Ammonia
Answers
Tomatoes, Baking Soda are all examples of a base.
Answer:
The following are bases: baking soda, bleach, soap, and ammonia.
The other items are acidic.
Explanation:
Bases have four different properties. They are bitter, feel slippery, do not react with carbonates, and turn red litmus paper blue.
In comparison, an acid tastes sour, reacts with metal and carbonates, and turns blue litmus paper red.
Astronomers use tiny wobbles of distant stars to detect the presence of planets orbiting those stars. This occurs because the star exerts a gravitational pull on the planet while the planet A) repels the star it orbits. B) exerts no force on the star. C) creates friction between itself and the star. D) exerts a gravitational pull on the star it orbits.
Answers
Answer:
D) exerts a gravitational pull on the star it orbits
Explanation:
When light from a distant star appears to slightly red shift or slightly blue shift i.e., it seems to sometimes move away from us and sometimes move towards us, it is most likely to have planets around it. This method is known as Doppler spectroscopy.
This happens because of the unequal masses of the planet and the star the center of gravity does not lie in between them but rather in the star itself. Around this center of gravity the planet and the star will move. This causes the star to wobble.
How do I find the acceleration in this problem?
Answers
Resultant force = mass x acceleration
6000-1000 = 2500a
a= 5000/2500
a= 2m/s2
Final answer:
To calculate acceleration, determine the change in velocity and the change in time, then use the formula a = ∆v/∆t where 'a' is acceleration, ∆v is the change in velocity, and ∆t is the change in time.
Explanation:
To find the acceleration in a problem, follow these general steps:
Determine the change in velocity (Δv), which is the difference between the final velocity (Vf) and the initial velocity (Vo).
Identify the change in time (Δt) over which the velocity change occurs.
Use the formula for average acceleration, which is a = Δv/Δt, where 'a' represents the acceleration, Δv is the change in velocity, and Δt is the change in time.
For instance, if a train starts at rest (Vo = 0) and reaches a velocity of 30.0 km/h (Vf) in 20.0 seconds (Δt), convert the velocity to meters per second (since 1 km/h is equal to approximately 0.27778 m/s), calculate Δv, and then divide by Δt to find acceleration.
Which of the following is true about genes?
A.
Genes are responsible for all the traits of an organism.
B.
In humans, genes are passed to an offspring from two parents.
C.
The genes of a particular organism can never change throughout its lifetime.
D.
Genes are made up of smaller molecules known as chromosomes.
Answers
Your answer is option B.
In humans, genes are passed to an offspring from two parents.
The other options are false statements about genes.
Hope this helps you.
Have a great day! (:
If a star does not emit a significant amount of visible radiation, what could you conclude?
a)It will not be able to be seen
b)it is a black hole
c)It is a very intense star
d)It is not a very intense star
Answers
Answer:
definitely A) it will not be able to be seen
Explanation:
when you lift a book from the ground to your desk, what kind of work do you do, negative or positive? by lifting the book what do you change? does the book gain engery or lose engery? what kind of engery?
Answers
The work is the product of the vector by the force by the distance; so if the direction in which the force is applied to the object and its displacement has opposite sign or are opposite, the work is negative. So, when you lift a book from the ground to your desk, you are applying a force upwards and the book is upwards too, then, both are going in the same direction. Therefore, the work is positive.
2. By lifting the book what do you change?
By lifting the book from the ground to your desk, its height changes, therefore you change its gravitational potential energy, which is equal to the mass of the book by height by the acceleration of gravity.
3. Does the book gain energy or lose energy? What kind of energy?
The book gains energy. The kind of energy that the book gains is called: "Gravitational potential energy".
If you drop a gum rapper on the floor is that pollution
Answers
A girl floating in the ocean and watches 12 wave crests pass her in 46 s. Calculate the wave frequency and period?
Answers
The frequency of the ocean waves is approximately 0.261 Hz, and the period is approximately 3.83 seconds, calculated based on the observation that 12 wave crests passed the observer in 46 seconds.
To calculate the wave frequency and period of ocean waves that a girl floating in the ocean observes, you can use the following definitions and formulas:
Frequency (f) is the number of wave crests passing a fixed point per unit of time. It is measured in hertz (Hz), which is equivalent to one wave per second.Period (T) is the time it takes for one complete wave cycle to pass a point. It is the inverse of the frequency and is measured in seconds (s).Given that 12 wave crests pass the observer in 46 seconds, the frequency (f) can be calculated as:
f = Number of waves / Time = 12 waves / 46 s
≈ 0.261 Hz
To find the period (T), you can use the formula:
T = 1 / f
≈ 1 / 0.261 Hz
≈ 3.83 s
Therefore, the frequency of the waves is approximately 0.261 Hz, and the period is approximately 3.83 seconds.
in real machines , efficiency is always
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machine
what type of adaptation helps a living thing hide in its environment
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If you have any other questions, just let me know! :)
Which piece of evidence did Alfred winger used to develop the theory of continental drift
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Wegener noticed that the fossils of some plants and animals were very similar even though they were founds hundreds of miles away from each other. He also noted that the rocks in regions far apart were similar in their characteristics.
What will happen to this current if a magnet is brought near the cord?
Answers
Answer:
It will exert a force on the electric current.
Explanation:
a 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal velocity
Answers
That's (m•g)
= (2 kg) • (9.8 m/s^2)
= 19.6 newtons
Which fact is NOT true about gravity? Gravity depends on distance. Gravity depends on weight. The force of gravity between two objects will never be 0. Gravity depends on mass.
Answers
Answer:
I'm not sure if this is true but I think that gravity depends on weight is not true
What is the temperature of 45 degrees fahrenheit in degrees celsius?
A. about 7 degrees celsius
B. about 45 degrees celsius
C. about 113 degrees celsius
D. about -7 degrees celsius