Que sucede con el trabajo obtenido conforme aumenta el ángulo?
although the pivot exerts a force on the ruler it does not exert a torque with respect to the pivot point. why not?
Answer:
The situation is not shown, however if one calculates torques about the pivot point, then the pivot point itself exerts no torque because the force applied by the pivot point exerts zero torque because Fp * L = 0 where L = 0 in this case.
If one wants to calculate torques about, say, the end of the ruler then one would need to calculate the torque applied by the pivot point.
A plant dying after being exposed to poison represents a physical change.
True or false. (No links please.) Correct answers only..
Answer:
False is the correct answer.
It is considered more of a chemical change because all of the cells inside the plant decompose (change chemicaly)
Answer:
False
Explanation:
saw this on another brainly question, it's because a flower that becomes a poisonous flower would be a chemical change. If it were to mix with the poison it would just become something new entirely.
An airplane flies with a velocity of 750. kilometers
per hour, 30.0° south of east. What is the
magnitude of the eastward component of the
plane's velocity?
A. 866 km/h
B. 650. km/h
D. 375 km/h
C. 433 km/h
The magnitude of velocity in east direction will be 650 N approximately.
What is velocity ?
velocity is given by the change in distance by the object with respect to change in time. It is a vector quantity and having S.I unit as m/s.
Here it is given that magnitude of velocity is 750 N and making an angle of 30 degree with x axis in counterclockwise direction as shown in figure below :
Now resolving and writing magnitude of velocity V in x and y direction respectively :
[tex]\begin{aligned}Vcos\theta&= 750 cos30^{o}=650 \:m/s\\Vsin\theta&= 750sin30^{o}= 375 m/s\end{aligned}[/tex]
It should be noted that [tex]vsin\theta[/tex] is acting in negative y direction.
Therefore, the magnitude of velocity in east direction is 650 m/s
check and know more about velocity here :
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Công thức tính quãng đường đi được của chuyển động thẳng biến đổi đều là:
At time t = 0 the velocity is v1. Therefore C1 = v1 and C2 = x1. Equations (1), (2), (3), and (4) fully describe the motion of particles, or bodies experiencing rectilinear (straight-line) motion, where acceleration a is constant.
at what speed does a tropical storm become a hurricane
Answer:
74 mph is the answer
Explanation:
Physic about newton's law
1.
How much work done by Olympic gold medalist power lifter Hydilyn Diaz when she
pushes a car with a force of 900 N at a distance of 250m?
2.
How much work done by a tractor if a large rock is pushed with a force of 5000
N at 2.0 m/s for 20 seconds?
#1
Force=900NDisplacement=250m[tex]\\ \sf\longmapsto Work=Force(Displacement)[/tex]
[tex]\\ \sf\longmapsto Work=900(250)[/tex]
[tex]\\ \sf\longmapsto Work=225000J[/tex]
[tex]\\ \sf\longmapsto Work=225KJ[/tex]
#2
Displacement=2(20)=40mForce=5000N[tex]\\ \sf\longmapsto Work=40(5000)[/tex]
[tex]\\ \sf\longmapsto Work=200000J[/tex]
[tex]\\ \sf\longmapsto Work=200KJ[/tex]
According to newtons third law if an eighth grader pushed against a large boulder with a force of 8 N how much force would the boulder exert on the eighth grader
Answer:
8n
Explanation
1.concave lens
A.distance between two waves
B.can be captured on screen
C.light of a wavelength
D.scattered incident light
E.convex lenses
F. distance to the focal point
G.light swinging in one direction
H.heat radiation
What to do here tell please.......
in 10 seconds a car accelerates 4m/s^2 to 50
m/s. How fast was the car going before it accelerated?
Variables:
Equation and Solve:
Answer:
10m/s
Explanation:
using the formula a=v-u
t
What is something that you do not like, you can't explain it but, but u know u just don't like it. For me, i don't like closed doors. It makes me feel trapped
Answer:
religion
Explanation:
when I get asked this... what is your religion... I try to explain so the best explanation I can give is
believing in one god is like saying bread can't get wet
DOUBLE POINTS!!!!
1. If there are two objects of equal size but object A is heavier than object B, which statement is TRUE according to Newton’s second law of physics?
A.
Object A will require less force to be set in motion and will travel faster.
B.
Object B will require less force to be set in motion and will travel faster.
C.
Object A will require more force to be set in motion but will travel faster than object B.
D.
Object B will require more force to be set in motion but will travel faster than object A.
2. For athletes, a focus on body mechanics improves the effectiveness of their efforts.
A.
True
B.
False
The answers are 1. According to Newton's second law, object A, being heavier, requires more force to be set in motion and will travel faster than object B. The correct answer is options C. and 2. Focusing on body mechanics is important for athletes as it improves their effectiveness, and technique, and reduces the risk of injury is a true statement.
1. According to Newton’s second law of physics, if there are two objects of equal size but object A is heavier than object B, then the statement that is true is option C: Object A will require more force to be set in motion but will travel faster than object B. Newton's second law of motion states that acceleration is directly proportional to the force applied and inversely proportional to the object's mass. Since both objects are of equal size but object A is heavier, it will require more force to be set in motion. However, once in motion, it will have more inertia and travel faster than object B.2. The statement "For athletes, a focus on body mechanics improves the effectiveness of their efforts" is True. Body mechanics refers to the way in which the body moves and maintains balance while performing a physical task. Athletes need to have proper body mechanics to achieve maximum efficiency and reduce the risk of injury. By focusing on their body mechanics, athletes can improve their technique, reduce unnecessary movements, and improve their overall performance. Good body mechanics can also help to prevent injury and reduce wear and tear on the body. Therefore, a focus on body mechanics is essential for athletes to maximize their performance while minimizing their risk of injury. In summary, Newton's second law states that a heavier object requires more force to be set in motion, while a focus on body mechanics can improve the effectiveness of athletes' efforts.For more questions on Newton's second law
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Two waves travel through ocean, one with wavelength 3 m, one with 6 m. Which one has greater speed?
Answer: 6m
Explanation: 6 is more than 3 and their both being measured by m
Emmy is running a marathon to try to get a Boston qualifying time. She runs at a constant velocity of 6 mph from 7:00 am to 8:30 am.
At 9:00 am, her velocity jumped to 8 mph. She completed her race at 10:30 am at a velocity of 10 mph. Calculate her acceleration
from 9:00 am - 10:30 am.
Answer:
answer is c
Explanation:
X
x
2.5 N
1.7 N
2.5 N
Answer:
2.5*1.7/2.5
Explanation:
Can somebody explain to me what’s 1/d^2 in electric force? And how do I graph it versus a force?
Answer:
so basically what you gotta do is, and then you can do that but you shouldn't do this
Someone help me please I don’t even know if that’s physics or not I just need help
Answer:
1. the robber carrying the metal safe will hurt more because the metal safe is heavier, so the heavier will be the force on the opposite direction from the one he was running when he hit the wall
2. ???
Explanation:
1. 3rd newton law: "If two bodies exert forces on each other, these forces are equal in magnitude and opposite in direction"
2. I don't know
8 a Name the bones that articulate (join together) in the knee joint
the shoulder joint
the hip joint
Answer:
The Femur and the Tibia
what is physical change
Answer:a usually reversible change in the physical properties of a substance, as size or shape:
Freezing a liquid is a physical change.
Explanation:
What energy change takes place when the wrecking ball strikes the wall?
A. The wall transfers potential energy to the wrecking ball.
B. The wrecking ball transfers potential energy to the wall.
C. The wall transfers kinetic energy to the wrecking ball.
D. The wrecking ball transfers kinetic energy to the wall.
Answer:
D
Explanation:
The wrecking ball transfers kinetic energy to the wall.
The device that is made up of many single slits that diffract light and form a diffraction pattern , is called
Gọi là máy quang phổ kế
That's a diffraction grating.
Why do some substances dissolve in water, but other substances do not?
Answer:
It has to do with the polairity of said molelule. If you have vegetable oil, for example, it will not disolve in water because the oil is a non-polar compound, unlike water which is polar. The bond dipoles and differences in electronegetivity in the molecule results in this.
WHAT IS THE VOLUME OF A 5.71 G PLASTIC CUBE THAT HAS A DENSITY OF 1.15 G/CM3
Answer:4.96[tex]cm^{3}[/tex]
Explanation: Density is [tex]\frac{Mass}{Volume}[/tex]
so you are now looking for volume.
Volume= Density x Mass so
Volume = (5.78g) x(1.15g/ [tex]cm^{3} \frac{x}{y}[/tex]) =4.96[tex]cm^{3}[/tex]
Exercise will not help maintain the health of your endocrine system.
A.
True
B.
False
When two atoms bond chemically it is because of the interaction between
A) the nuclei of each atom.
B) the protons in each atoms.
C) all electrons in the atoms.
D) the valence electrons in each atom.
Pls hurryyyy!!!
Answer:
Explanation:D
When two atoms bond chemically it is because of the interaction between the valence electrons in each atom because only the valence electrons of an atom are responsible for the chemical activity.
Therefore the correct answer is option D.
What is a chemical reaction?A chemical reaction is a process in which one or more substances, also known as reactants are converted to one or more different substances, known as products.
Because only an atom's valence electrons are responsible for the chemical activity and because the quantity of valence electrons indicates an atom's valency,
Valency is a highly important requirement for the chemical reactivity of any element, two atoms connect chemically as a result of their contact.
Thus, the correct answer is option D.
To learn more about chemical reactions here, refer to the link;
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Is 53cm bigger than 5m?
No, 53cm is less than 5m.
what is the force that every mass exerts on every other mass? Matter, Weight, Pull, or Gravity.
Answer:
Gravity is a force exerted by masses
Explanation:
The downward pull on the object is due to gravity. is the force that objects exert on each other because of their masses. You are familiar with the force of gravity between Earth and objects on Earth. Gravity is present not only between objects and Earth, however.
write two examples of machine which increases the speed of doing work
Answer:
Explanation:
Speed multipliers are useful when an object needs to move a further distance or at a higher speed. Some examples are wheels and axles and third class levers. Machines can be either simple or complex. Simple machines are machines that only use one type of machine, such as a lever or an inclined plane.
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Which pair correctly identifies the strongest and weakest fundamental forces with the strongest force listed first
Answer:
Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity
Explanation:
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what effects does ionizing radiation have on the atmosphere