Answer:
kinetic friction or something else
Explanation:
Draw a diagram to illustrate the problem, as shown below.
m = mass of the box, kg
mg = weight of the box, N, acting downward
Because of Newton's 3rd law, a normal force of N = mg acts upward on the box.
C = 200 N, the force applied by Clara, horizontally to the right
E = 500 N, the force applied by Eduardo, horizontally to the left.
Because E is greater than C, the box will move left.
The frictional force, F, will resist the initial motion. Its magnitude is
F = μN = μmg, where μ = kinetic coefficient of friction.
F acts horizontally to the right.
From the given table, we can conclude that
Normal force acting upward is correct
Tension by Eduardoacting left is correct.
Tension by Clara acting right is correct.
Kinetic friction acting left is Incorrect.
Gravity acting downward is correct.correct
Answer:
The direction of the kinetic friction force is incorrect
Answer:
C) Kinetic Friction
Explanation:
Got it right on edg 2021
Pluto was laying at rest in the sun and notices the smell of meat. He runs at 8 m/s to the smell of the meat. How fast is the dog accelerating in 2 s ?
Given parameters:
Initial velocity(body is at rest) = 0m/s
Final velocity = 8m/s
Time of acceleration = 2s
Unknown:
Acceleration of the dog = ?
Acceleration is defined as the change in velocity with time.
Mathematically;
Acceleration = [tex]\frac{Final velocity - Initial velocity}{time taken}[/tex]
Now input the given parameters and solve;
Acceleration = [tex]\frac{8-0}{2}[/tex]
Acceleration = 4m/s²
The dog is accelerating at a rate of 4m/s²
2 kg of water and 2 kg of Copper are cooled from same temperature to the same temperature. Why does the water cool more slowly than the Copper?
Answer:
Water has higher specific heat capacity compared to copper. This means that water needs to absorb more heat energy to increase it's temperature by 1 °C. Therefore, water needs longer time to release heat energy due to higher amount of heat energy stored inside the water.
A car travels a distance of 36 m in 12 seconds How fast is the car moving?
Which question requires the collection of data to answer it?
A. How much water does a peach tree require to produce fruit?
B. Are peaches more delicious than apricots?
C. Do peaches go better with ice cream or yogurt?
D. Why are peaches such a popular fruit?
Answer:
a
Explanation:
b, c, and d are all opinion based, a is the only one that you need factual evidence and observations.
Satement A is the only one for which you require factual information and observations; B, C, and D are all opinion-based options (A) is correct.
What are statistics?Statistics is a mathematical tool defined as the study of collecting data, analysis, understanding, representation, and organization. Statistics is described as the procedure of collecting data, classifying it, displaying that in a way that makes it easy to understand, and analyzing it even further.
It is given that:
The question statement is:
Which question requires the collection of data to answer it?
A. How much water does a peach tree require to produce fruit?
B. Are peaches more delicious than apricots?
C. Do peaches go better with ice cream or yogurt?
D. Why is peached such popular fruit?
From the above statements, A is the only one for which you require factual information and observations; B, C, and D are all opinion-based.
As we know, the act of acquiring and analyzing data on certain variables in an established system allows one to analyze results and respond to pertinent inquiries.
In all academic disciplines, including the physical and social sciences, the humanities, and business, data collecting is a necessary component of research.
Thus, statement A is the only one for which you require factual information and observations; B, C, and D are all opinion-based options (A) is correct.
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how has climate change affected Kentucky
Answer:
It will make it hot or cold
Explanation:
A wooden block is pulled at a constant acceleration of 1.4 m/s2. Find the net applied force on the block if its mass is 0.6 kg.
Answer:
F = 0.84 [N]
Explanation:
In order to solve this problem we must take into account Newton's second law, which tells us that the sum of all forces applied on a body must be equal to the product of the mass of the body by its acceleration.
F = m*a
where:
F = force [N]
a = acceleration = 1.4[m/s^2]
m = mass = 0.6 [kg]
F = 0.6*1.4
F = 0.84 [N]
When a car traveling at 30m/s hits the gas pedal up to 65m/s in 3.5 sec what is the cars acceleration during that time
Answer:
d
Explanation:
I need help Will give five stars please show work please
Answer:
These has anwers and also the solution. You can recheck if you want.
What is the Nearest Galaxy from the Milky Way
Two identical stones are simultaneously launched horizontally from two slingshots at
the same height. Stone A is launched with an initial speed of 5 m/s. Stone B is
launched with an initial speed of 1 m/s. Which stone hits the ground first, and where
do they land?)
Answer:
a) Both stones hit at the same time, b) Stones A and B will land at a distance of [tex]2.26\sqrt{y_{o}}[/tex] and [tex]0.452\sqrt{y_{o}}[/tex] meters, respectively.
Explanation:
Each stone experiments a parabolic motion, that is, the combination of a horizontal motion at constant velocity and a vertical uniform accelerated motion due to gravity. We know that each stone is launched horizontally at the same height and from the same initial position.
The equations of motion for each stone are described below:
Stone A
[tex]x_{A} = x_{o} + v_{A,o}\cdot t_{A}[/tex]
[tex]0 = y_{o} + \frac{1}{2}\cdot g\cdot t_{A}^{2}[/tex]
Stone B
[tex]x_{B} = x_{o} + v_{B,o}\cdot t_{B}[/tex]
[tex]0 = y_{o} + \frac{1}{2}\cdot g\cdot t_{B}^{2}[/tex]
a) Which stone hits the ground first?
The stone that hits the ground first has the lowest time. If we know that [tex]v_{A,o} = 5\,\frac{m}{s}[/tex], [tex]v_{B,o} = 1\,\frac{m}{s}[/tex], [tex]x_{o} = 0\,m[/tex] and [tex]g = -9.807\,\frac{m}{s^{2}}[/tex], then the equations of motion are reduced into this:
Stone A
[tex]x_{A} = 5\cdot t_{A}[/tex] (Eq. 1)
[tex]y_{o} -4.905\cdot t_{A}^{2}= 0[/tex] (Eq. 2)
Stone B
[tex]x_{B} = t_{B}[/tex] (Eq. 3)
[tex]y_{o} -4.905\cdot t_{B}^{2}= 0[/tex] (Eq. 4)
From (Eq. 2) and (Eq. 4), we get that [tex]t_{A} = t_{B}[/tex].
Both stones hit at the same time.
b) Where do they land?
From (Eq. 2) and (Eq. 4), we get:
[tex]y_{o} = 4.905\cdot t^{2}[/tex]
The time is cleared within the expression:
[tex]t =\sqrt{\frac{y_{o}}{4.905} }[/tex]
[tex]t \approx 0.452\sqrt{y_{o}}[/tex]
And from (Eq. 1) and (Eq. 3), we get the following equations of motion:
[tex]x_{A}= 5\cdot t[/tex]
[tex]x_{B} = t[/tex]
The horizontal distance taken by each stone is calculated by direct substitution on each expression:
[tex]x_{A} = 2.26\sqrt{y_{o}}\,m[/tex]
[tex]x_{B} = 0.452\sqrt{y_{o}}\,m[/tex]
Stones A and B will land at a distance of [tex]2.26\sqrt{y_{o}}[/tex] and [tex]0.452\sqrt{y_{o}}[/tex] meters, respectively.
Calculate the density of the following material: 500 kg gold with a volume of 0.026 m³
Answer:
If we have large numbers (b is positive) or small numbers (b is negative), then this way ... 1, and V2i = 100 L, n2i = 5 + 2 + 1 = 8 in vessel 2. ... a good working substance in the barometer.
Answer:
the answer is 19230 kg/m3
Explanation:
Which is a valid velocity reading for an object?
Answer:
45 m / s North is a valid vector reading for an object.
Explanation:
Then velocity will be defined by x km / hr North. And, magnitude of velocity defines the speed of the body. Although this tells the speed, but there is no description for the direction, so it's not a vector reading
45 m/s north is a valid velocity reading for an object. So, the correct option is B.
What is Velocity?Velocity is explained as displacement in a given amount of time which is a vector quantity, meaning it has both magnitude and direction. When a body travelling on a straight path at a speed of x km / hr in North, then the velocity will be defined by x km / hr North.
Options like 45m/s, 0 m/s north and 0 m/s are speed, null velocity and speed respectively, as it tells speed, but no description for direction, so it is not a vector reading. 45 m / s North tells about the speed as well as its direction and the magnitude of velocity.
Thus, 45 m/s north is a valid velocity reading for an object. So, the correct option is B.
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Your question is incomplete, most probably the complete question is:
Which is a valid velocity reading for an object?
45 m/s 45 m/s north 0 m/s south 0 m/sCompared to visible light, ultraviolet radiation is more harmful to human skin and eyes because ultraviolet radiation has which of the
following characteristics?
A higher frequency
B. longer wavelength
C. higher speed
D. longer period
The ultraviolet radiation should contain the characteristics of the higher frequency.
What is ultraviolet radiation?Ultraviolet (UV) radiation should be a form of unionized radiation that should be emitted from the sun and from artificial sources. Also, it resulted in the risk related to the health in terms of human skin & eyes. It includes the high frequency that represents it contains more energy at the time of emission. Also, it does not consider the high speed, long period, and long wavelength.
Therefore, the correct option is A.
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25pts and brainlyiest if you get right What is the best explanation for how nuclear fusion contributes to the life cycle of a star?
A) Hydrogen in the core of the star is converted to helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes stable and expands.
B) Helium in the core of the star is converted to hydrogen by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes unstable and expands.
C) Hydrogen in the core of the star is converted to helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes unstable and contracts.
D) Helium in the core of the star is converted to hydrogen by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes unstable and contracts.
Answer:
Hydrogen in the core of the star is converted to helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes unstable and contracts.
Explanation: i took the test
Answer:
C if u know u know
Explanation:
How are mass and weight different
Answer:
mass is something that takes up space and weight is how much mass something has
Frieda makes a pyramid of oranges for a display at the grocery store. A few minutes later, Corwin bumps into the display and the oranges spill down.
Which change of state does the motion of the oranges most closely model?
melting
freezing
condensation
sublimation
Answer:
Melting
Explanation:
I just took the quiz and got it right.
A train moves with a uniform velocity of 10 m/s for 8s find the distance traveled by it
What type of energy change occurs as a match burns?
Answer:
elaborate
Explanation:
you need to elaborate im just doing this for points but u need to elaborate
according to the theory of plate tectonics
Answer:
Alfred Wegener proposed the idea that earths lithospher is divided into tectonic plates.The theory was only accepted after he died.
A crate is dragged across an ice covered lake. The box accelerates at 0.18 m/s2 and is pulled by a 36 N force. What is the mass of the box?
Answer:M=6.48n
Explanation:
M=(0.18)(36)
0.18x36=6.48
M=6.48n
Why salt is a pure substance and salt solution is considered to be a mixture
Explanation:
Salt (NaCl) is a pure substance because it contains two elements in a fixed ratio and has only one component. On the other hand, salt solution is a mixture, as it has two different components- salt and water.*IT MAY HELP U.Plz marke as a brainlist
Answer:
Mixtures are defined as assemblies of materials that have no chemical bonds between them and thus can usually be separated - like sand and water.
Solutions where a solid material such as salt is completely dissolved are not generally thought of as mixtures because there is loose hydrogen bonding involved in the dissolving of a solute in a solvent.
Solutions lie between pure substances and true mixtures, but are usually not thought of as mixtures.
Explanation:
When two compounds or molecules react together to form new substances, they are called
If a company like Waste Management collects all of the paper, bottles, plastic, ete in a single bin, how
(True False)
can these materials possibly be recycled?
Answer:
yes they can be recycled
Explanation:
What is the weight (in Newtons) of a person with a mass of 95 kg?
The weight of the person is 931 Newtons.
Given:
The mass of the person is 95 kilograms
To find:
The weight of the person in Newtons.
Solution:
Mass of the person = m = 95 kg
The accleration due to gravity = g = 9.8 m/s^2
The weight of the person = W
[tex]Weight=Mass \times \text{(Acceleration due to gravity)}\\\\W = m\times g\\\\W = 95 kg\times 9.8 m/s^2=931 N[/tex]
The weight of the person is 931 Newtons.
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5. How will you separate water from petrol?
Answer:
by a seprating funnel or let it stand it will settle on its own
Explanation:
Answer:
How will you separate water from petrol?
Explain the relationship between citizenship and the right to vote:
how to explain horizontal in words
In astronomy and geography, a direction or plane is said to be horizontal if it is perpendicular to the vertical direction. In mathematics, anything parallel to the horizon is called horizontal. Because vertical is the opposite of horizontal, anything that makes a 90-degree angle (right angle) with the horizontal or the horizon is called vertical. So, the horizontal line is one that runs across from left to right.
Newton's first law of motion is also called Law of Inertia explain
Explanation:
Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.
Explanation:
Inertia is the tendency of an object toremain at rest or, if moving, to continue its motion in a straight line at uniform velocity.
Newton's First Law of MotionObject will remain at rest or move at uniform velocity unless acted upon by an external force
Hope this is correct and helpful
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what happen to tbe brightness when one of the bulb removed from patallel circiut
A testable prediction is a(n) ______. Group of answer choices a. hypothesis b. experiment c. exercise d. variable
Answer :A testable prediction is also known as a hypothesis.
Explanation: I think
A testable prediction is a hypothesis. (a)
