Answer:
15 N to the right.
Explanation:
100 N to the right -->
85 N to the left <--
So therefore in order to find the net force of where the sled is being dragged towards is 100 N - 85 N = 15 N.
So the sled is moving towards the right of 15 N.
2. Which of the following is NOT a possible source of Earth's magnetic field?
A. sun's magnetic field
c. magnetosphere
b. moon's magnetic field
d. Earth's core
Answer:
c.) magnetosphere
Explanation:
I think is C
Explain using Newton's Third Law of Motion, how starting blocks have helped lower times in track events.
How much work is done when a body of mass m is raised to a height h above the ground?
Answer:
So if an object of mass m is raised through a height h, the work done on the object is equal to mgh, and so this amount of energy is transferred to the object. (Notice that this equation is identical to the one describing an object falling under gravity, Equation
PLEASE HELP!
Electric potential depends on which factors?
A: Mass and amount of charge
B: Distance and amount of charge
C: Mass and distance
D: Density and amount of charge
Answer:
B: Distance and amount of charge
Explanation:
I am taking the quiz and this is the correct answer!
Electric potential depends on Distance and amount of charge.
What is electric potential?The electric potential is defined as the amount of work needed to move a unit of electric charge from a reference point to the specific point in an electric field.
Electric potential depends on what factors?For any charge located in an electric field its electric potential depends on the type (positive or negative), amount of charge, and its position in the electric field.
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At what velocity would a 5.0 kg dog have to run to have the same
momentum as a 30 kg pig walking at 3.0 m/s?
Answer:
The velocity with which the 5.0 kg dog has to run to have the same momentum as the 30 kg pig walking at 3.0 m/s is 18 m/s
Explanation:
Given that the mass of the dog = 5.0 kg
The mass of the pig = 30 kg
The speed with which the pig is walking = 3.0 m/s
We have that linear momentum = Mass × Velocity
Therefore, the momentum of the pig, m₁ = 30 kg × 3.0 m/s = 90 kg·m/s
m₁ = 90 kg·m/s
The momentum of the dog m₂ = Mass of the dog × Velocity of the dog
Given that m₁ is to be equal to m₂, we have;
m₁ = 90 kg·m/s = m₂ = Mass of the dog × Velocity of the dog
90 kg·m/s = m₂ = 5.0 kg × Velocity of the dog
m₂ = 5.0 kg × Velocity of the dog = 90 kg·m/s
5.0 kg × Velocity of the dog = 90 kg·m/s
Velocity of the dog = 90 kg·m/s/(5.0 kg) = 18 m/s
The velocity with which the 5.0 kg dog has to run to have the same momentum as the 30 kg pig walking at 3.0 m/s = 18 m/s.
Water has a very high heat capacity which is why it's hard to quickly heat up and cool down the oceans true or false
The answer would be true
How are extrusive rocks formed?
A. Magma gets trapped inside Earth and cools to rock.
B. Volcanoes apply force to solid rocks and eject them
C. Magma gets forced to Earth’s surface and cools to rock.
D. Volcanoes trap lava inside Earth, where it cools to rock.
Answer:
A
Explanation:
Answer: C
Explanation: Because if magma wasn't to be forced on earth's surface, the magma would come on earth and burn earth down.
Which of the following would be considered a lever?
a screw cap
a seesaw
an axe
a windmill
Answer:
A seesaw
Explanation:
Answer:
a seesaw
Explanation:
whats the answers to this??
Answer: 14 centimeters
Explanation: she walks 4 units east, 6 units up, then 4 units west. If each unit is 1 centimeter that is 16 centimeters.
a 25 kg object is pushed with a horizontal force of 5 N esat across a table. If the force of friction is 2 N, what is the acceleration of the object?
Answer:
Apply Newton's second law in the moving direction.
Explanation:
[tex]\begin{aligned}F &= ma\\5N-2N &= 25kg\times a\\a & = \frac{3N}{25kg}\\&= 0.12ms^{-2}\end{aligned}[/tex]
Friction force applies in the opposite direction of motion; as a restriction.
PLEASE HELP!!!! As kinetic energy increases, what happens to mass and velocity?
Group of answer choices
only mass increases
only velocity increases
both increase
both decrease
Answer: I believe it would be "only velocity increases " because the mass is constant, if the velocity is increased, the kinetic energy must also increase.
Answer:
they both increase
Explanation:
kinetic energy is proportional to velocity squared. which mean if kinetic energy goes up the velocity goes up double as much and kinetic energy is exactly proportional to mass so as kinetic energy increases so does mass.
plz help ASAP I will mark brainliest
Answer:
0.616
Explanation:
hve a wonderful weekend :) stay safe
An ocean scientist plans to spend several days underwater in a submarine. Doctors on land will monitor her body to make sure she is healthy during her trip. What is one way doctors will be able to tell whether her body is healthy enough to do all her tasks while she is in the submarine?
Answer:
The doctors could see if her cells are getting the molecules they need from food and air
Explanation:
The doctors could see if her cells are getting the molecules they need from food and air. Doing so allows the doctors a general overview of how well her body's biological systems are performing since the basic necessities of the human system are food and oxygen. Therefore if the body is receiving both food and oxygen properly and distributing it properly and efficiently as well without any problems then the most likely outcome is that she is healthy enough to perform her tasks in the submarine under more pressure.
Answer:
The doctors could see if her cells are getting the molecules they need from food and air
Explanation:
HELPPPPPPPPP PLEASEEEEEE On this graph, which material has the lowest density? Density comparison Question 4 options: red yellow green blue
Yellow has the lowest density. I took the test and got this question correct. :)
The object represented by the yellow graph has the lowest density.
What is density?
It is defined as the mass per unit volume of the body. Mathematically -
ρ = M/V
Given is a graph showing the variation of the mass with volume.
All of the given graphs are straight lines. The slope of the line determines the proportionality constant or density of the four objects whose graphs are plotted. The graph with the maximum slope will have the highest density and with the minimum slope has lowest density. It can be seen that the yellow graph has the smallest slope (slope is the angle any straight line makes with x - axis). So it will have the lowest density.
Therefore, the object represented by the yellow graph has the lowest density.
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Consider this situation: A block is at rest on an inclined
plane. Of the forces listed, identify which act upon the block.
•normal
•gravity
• applied
• friction
•tension
• air resistance
The forces, act upon the block which is at rest on an inclined plane, are:
normal force.force due to gravity.force due to friction.What is frictional force?Two surfaces that come into contact and glide against one another produce frictional force.
When the block is on an inclined plane, its weight is acting downwards for force of gravity, the surface on the plane acts an upward force named normal force. But to become it rest, a resistive frictional force acts on it. Hence, the forces, acts upon the block, are:
normal force.force due to gravity.force due to friction.Learn more about friction here:
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people with____ need to check there blood sugar level on a regular basis
Answer:
diabetes
Explanation:
hope it helps
Answer:diabetes
Explanation:
common sense
Which is not a force?
O momentum
O friction
O pull
O weight
Answer:
weight
Explanation:
the reason is because I am invteble
!!PLS HELP ITS URGENT!!Lena is using water displacement to find the volume. The volume of water in a graduated cylinder is 30 ml. After Lena drops a small toy in the graduated cylinder, the volume of water rises to 37 ml. What is the volume of the small toy?
Answer:
7
Explanation:
A boy scout troop hikes 10.0 km East and then hikes an
additional 7km North. What the total displacement of
the boy scout troop?
Answer:
wouldn't it be 17km?
Explanation:
Since its 10km and 7km it would make 17km in total. sorry if this didnt help i suck at this stuff :/
A charge of - 4.0 µC is located at the origin and a charge of - 5.0 µC is located along the y-axis at y = 2.0 m. At what point along the y-axis is the electric field zero?
I got y = 0.94427191 and y = -16.944272. Not sure if right tho.
I did [tex]{k q_1 \over y^2} &= {k q_2 \over (2-y)^2}[/tex], put the known in and solved it.
A block is hung by two ropes angled at 30º and 60º respectively. What is the ratio of the tension in the second rope to the tension in the first rope?
Omar wrote a hypothesis about batteries called dry cells. If more dry cells are connected end to end, a light bulb will work longer because there is more energy available. What are the variables in his hypothesis? The independent variable is the number of dry cells, and the dependent variable is the length of time the bulb works. The independent variable is the length of time the bulb works, and the dependent variable is the number of dry cells. The independent variable is the number of dry cells, and the dependent variable is the amount of energy available. The independent variable is the amount of energy available, and the dependent variable is the number of dry cells.
Answer:
The independent variable is the number of dry cells and the dependent variable is the time the bulb works.
Explanation:
In this exercise, you are asked to analyze the variables derived from Ómar's hypotypeis
"If more dry cells are connected end-to-end, a light bulb will work longer because more energy is available."
In this hypothesis, the independent variable that is controlled by the researcher is the number of batteries to be connected in series.
The dependent variable that is measured by the researcher is how long the bulbs last.
When reviewing the different answers, the correct one is:
The independent variable is the number of dry cells and the dependent variable is the time the bulb works.
Answer:
It is A.
Explanation:
I did the test on Edg.
Hi- I'm giving Brainliest for the best explanation to this.
If you were in a falling elevator, would you be able to jump up at the last second in order to survive? Please explain. I am so confizzled!
Thank you!
Answer:
yes it is possible, you have to lay down flat on your back
brainliest pweaseee
Answer:
Yes (and no)
Explanation:
Hey! This according to my theory is possible, the g-force of an object or "elevator" (in your explanation) is accelerating as it's gravitational pull is getting stronger. So it would but wouldn't be possible in a small elevator, because you-know it's an elevator (and of course you would bump your head, ouch!) ; p !
But if you had free or spare space to use, then you can jump upwards at the last second to cancel out the gravitational pull as if you actually (or originally) jumped from this height. But the gravitational pull may be too strong for those of humans, if the person acquiring and accelerating in G-Force doesn't have good leg muscle then he may be pulled along with the object by the gravitation.
I hope this helped! Pls Brainliest my answer! It would mean and help a lot! ; )
A plane lands and comes to a complete stop through 180 m of runway with a deceleration of 6.25 m/s2 [N]. Determine the plane’s velocity when it first touched the landing strip.
Answer:
47.43 m/s
Explanation:
Given that,
Final speed of a plane, v = 0
Distance, d = 180 m
Acceleration of the plane, a = -6.25 m/s² (deceleration )
We need to find the plane's velocity. Let it was u. So, using the third equation of kinematics as :
[tex]v^2-u^2=2ad\\\\u^2=0^2-2\times (-6.25)\times 180\\\\u=\sqrt{2250} \\\\u=15\sqrt{10}\ m/s\\ \\\text{or}\\\\u=47.43\ m/s[/tex]
So, the plane's velocity when it first touched the landing strip is 47.43 m/s.
Eating pizza with friends after a football game is most likey an example of which food choice factors?
A.time and cost
B.family and friends
C.nutritional content
D.advertising
E.Other:
Answer:
time and cost
Explanation:they have to pay for the pizza and take time to eat it
Answer:
B: Family and Friends
Explanation:
According to the class I had on this a few years ago, I can confirm that this was the answer.
My answer would be this because you are socializing with friends (according to the question) and you would just select it automatically due to background knowledge.
Hope I helped! ☺
Thelma and Louise ending filmed at: Dead Horse Point , Moab Utah
Cliff Height: 609.6 m ( 2000 feet)
Vehicle Velocity at cliff edge: 40.3 meters/second (90 miles per hour)
Questions to answer: The Colorado River is at the bottom of the cliff approximately 536.5 meters (1,760 feet) from cliff base. The river averages 300 feet across and is forty feet deep.
A. Does the car land in the river?
B. How much closer to the cliff base would the river have to be, to allow the car to land 50 feet from the edge of the river?
Answer:
A. The car does not land in the river
B. 399.27 meters
Explanation:
The Cliff Height, s: 609.6 m
The velocity at the edge of the cliff, vₓ = 40.3 meters/second (90 miles per hour)
The location of the Colorado River = 536.5 meters (1,760 feet) from the cliff base
The width of the river across = 300 feet average
The depth of the river = 40 feet
Assumption;
The direction of the vehicle = Horizontal
Vertical velocity of the vehicle = 0 m/s
The time, t, it takes the car to reach the level of the bottom of the cliff is given as follows;
s = [tex]u_y[/tex]·t + 1/2·g·t²
Where;
[tex]u_y[/tex] = The initial vertical velocity of the vehicle = 0
g = The acceleration due to gravity = 9.81 m/s²
Therefore, we have;
609.6 = 0×t + 1/2 × 9.81 × t²
609.6 = 1/2 × 9.81 × t²
t = √(2 × 609.6/9.81) ≈ 11.148 seconds
The horizontal distance, x, travelled by the car in the above calculated, 11.148 seconds, time is x = vₓ × t = 40.3 × 11.148 = 449.27 meters
Therefore, the horizontal distance from the cliff travelled by vehicle on landing from the base of the cliff = 449.27 meters
Given the river is located approximately 536.5 meters from cliff's base, the car does not land in the river
B. In order for the car to land 50 ft. from the edge of the river, the river has to be 449.27 - 50 ≈ 399.27 meters from the base of the cliff.
You are camping, and you are inflating your air mattress. What best describes what you are doing to the gas pressure inside of the mattress?
filling it up
Explanation:
Modern isotopic counting is done by ___.
A. Microscope
B. Accelerator mass spectrometer
C. Balance
D. Scanning electron microscope
Accelerator mass spectrometers are used in modern isotope counting.
So, option B. is correct.
Define isotopes.Isotopes are two or even more kinds of atoms with the same atomic masses but differing nucleon numbers leading to varying numbers of neutrons within their nuclei.
Accelerator mass spectrometry would be a type of mass spectrometry in which ions are accelerated to extremely high kinetic energy before being analyzed for mass.
Accelerator mass spectrometers are used in modern isotope counting.
Option B. is correct.
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7. The position equation, x = x0 + v0t + 1/2at^2, has three terms. Write down the physical significance for each of the three.
Answer:
X0 is the initial position of the object
V0 t is the displacement of the object in time t due to its initial velocity
1/2 a t^2 is the displacement of the object in time t due to its acceleration
Adding the 3 terms (being careful with signs) gives the final position of the object at time t
Write a summary paragraph of 200 words discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.
Summarize your results.
According to your data, was your hypothesis correct? (Be sure to refer to your data when answering this question.) If the hypothesis was not correct, what do the results of the lab indicate the correct answer is?
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Describe how the results might be applied in the real world.
Answer:
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Explanation:
This is what your experiment was intended to demonstrate or investigate. "As temperature rises, honey's viscosity falls."
What is an experiment?The experiment appears to investigate the relationship between honey viscosity and temperature, and after reading the question.
You must look at your experimental results here; it's likely that you discovered that viscosity does indeed drop as the temperature rises.
The final task at hand is to list the challenges and issues you encountered throughout the experiment and make suggestions for how to address them in order to conduct future experiments that are more successful.
Therefore, the temperature has a considerable influence on viscosity, however, the particular substance also affects this relationship.
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