Answer:
1) The Mechanical Advantage of the lever is 3
2) The velocity ratio of the lever is 4
3) The efficiency of the lever is 75%
Explanation:
A lever is a simple machine that is used to lift a heavy load with a little effort or force
The mechanical advantage is the ratio of the force output to the force input
The given parameters of the lever are;
The length of the lever = 1 m
The weight of the load (force output), [tex]F_r[/tex] = 600 N
The effort applied (force input), [tex]F_e[/tex] = 200 N
1) The Mechanical Advantage, MA of the lever is given as follows;
[tex]MA = \dfrac{F_r}{F_e} = \dfrac{600 \ N}{200 \ N} = 3[/tex]
The Mechanical Advantage, MA of the lever = 3
2) The velocity ratio, V.R., is the ratio of the distance moved by the effort, [tex]L_e[/tex], to the distance moved by the load, [tex]L_r[/tex]
For the lever, we have;
The distance of the load from the fulcrum, [tex]L_r[/tex] = 20 cm = 0.2 m
Therefore, we have;
The distance of the effort from the fulcrum, [tex]L_e[/tex] = 1 m - 0.2 m = 0.8 m
From which we have;
[tex]V.R.= \dfrac{L_e}{L_r} = \dfrac{0.8 \ m}{0.2 \ m} = 4[/tex]
The velocity ratio of the lever = 4
3) The efficiency, η, is given as follow;
[tex]\%Efficiency, \, \eta = \dfrac{M.A.}{V.R.} \times 100 = \dfrac{3}{4} \times 100 = 75\%[/tex]
The efficiency of the lever is 0.75 or 75%.
Explanation:
The length of the lever = 1 m
The weight of the load (force output), F_rF
r
= 600 N
The effort applied (force input), F_eF
e
= 200 N
1) The Mechanical Advantage, MA of the lever is given as follows;
MA = \dfrac{F_r}{F_e} = \dfrac{600 \ N}{200 \ N} = 3MA=
F
e
F
r
The length of the lever = 1 m
The weight of the load (force output), F_rF
r
= 600 N
The effort applied (force input), F_eF
e
= 200 N
1) The Mechanical Advantage, MA of the lever is given as follows;
MA = \dfrac{F_r}{F_e} = \dfra
=
200 N
600 N
=3
The Mechanical Advantage, MA of the lever = 3
2) The velocity ratio, V.R., is the ratio of the distance moved by the effort, L_eL
e
, to the distance moved by the load, L_rL
r
For the lever, we have;
The distance of the load from the fulcrum, L_rL
r
= 20 cm = 0.2 m
Therefore, we have;
The distance of the effort from the fulcrum, L_eL
e
= 1 m - 0.2 m = 0.8 m
From which we have;
V.R.= \dfrac{L_e}{L_r} = \dfra
The distance of the load from the fulcrum, L_rL
r
= 20 cm = 0.2 m
Therefore, we have;
The distance of the effort from t
V.R.= \dfrac{L_e}{L_r} = \dfrac{0.8
L
e
=
0.2 m
0.8 m
=4
The velocity ratio of the lever = 4
3) The efficiency, η, is given as follow;
\%Efficiency, \, \eta = \dfrac{M.A.}{V.R.} \times 100 = \dfrac{3}{4} \times 100 = 75\%%Efficiency,η=
V.R.
M.A.
×100=
4
3
×100=75%
The efficiency of the lever is 0.75 or 75
When the velocity of an object is quadrupled , by what factor is its kinetic energy changed ?
Answer:
I believe it is 16
Explanation:
Answer:so add the momentum twice and then the kinetic energy becomes four times
Explanation:This includes to me not the factor but by what factor it’s kenetic energy changes Momentum becomes twice and kinetic energy becomes four times its original value
Calculate Density:
Volume=43cm3, Mass=45g
Answer:
P= 1.04651 g/cm3
Explanation:
Selective breeding has been used to create plants that are more resistant to disease. Of what is this an example? A an organism being used as part of a technological process B an organism being changed through technological methods C a new technology inspired by the natural structure of a living organism D a new technology being directly developed from the structure of an organism
Answer:
B. an organism being changed through technological methods
Explanation:
Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments. One of the most important branch of science is bioengineering. Bioengineering can be defined as a high-tech process which avail scientists the opportunity or ability to modify, remove, replace and insert Deoxyribonucleic Acid (DNA) sequence in a living organism such as bacterias, animals, plants etc in order to correct a genetic disorder and to improve on their physical and chemical conditions.
Selective breeding has been used to create plants that are more resistant to disease. Thus, this is an example of an organism being changed through technological methods.
Zach drives his car around a circular section of a road having a radius of 50 meters at a constant speed of 20 m/s. What is the centripetal acceleration of Zach's car?
Answer:
Centripetal acceleration = 8m/s²
Explanation:
Given the following data;
Radius, r = 50m
Velocity, v = 20m/s
To find centripetal acceleration;
Centripetal acceleration = v²/r
Centripetal acceleration = 20²/50
Centripetal acceleration = 400/50
Centripetal acceleration = 8m/s²
Therefore, the centripetal acceleration of Zach's car is 8 meters per seconds square.
What two things determine whether a molecule is polar?
Check all that apply.
A. If there is an anion and a cation
B. If the molecule is easily ionized
C. If the bonds are polar
D. The molecular shape
Answer:
c
Explanation:
Answer:C&D
Explanation:
I just did it
the height has a distance of 2.5 seconds to hit the ground what is gravity?
Answer:
11 times
Explanatiom:
756 fourty
What is the connection to Canadian technology/development with the Kepler space telescope?
Answer:One of this country's most notable achievements will be spending Canada Day weekend marking its own milestone anniversary in a unique place, floating up in space.
After 10 years in the ether, several times farther from Earth than the International Space Station, it remains the world's smallest space telescope.
MOST was also Canada's first-ever space telescope when it was launched into space on June 30, 2003.
It has helped make Canada a leader in the field of micro satellites.
But Matthews is particularly enthused about all the other possibilities that might be opened up by the 60-kilogram MOST.
The colorful University of British Columbia astrophysicist firmly believes there is life outside our solar system.
"Certainly simple forms of life like microbial life is probably very common — and I hope complex life," Matthews said in a recent interview. "If it's out there, we're finding the places where it's most likely to live."
I have no Idea if this helps but hope it does.
Define kinetic energy?
Answer:
the form of energy that makes something move
Explanation:
2. What is the smallest particle into which an
element can be divided?
O proton
particle
O atom
O nucleus
Explanation:
atommmmmmmmmmmmmmmmmmmmm
How are electromagnetic waves different from sound or water waves?
Explanation:
Electromagnetic waves are different from sound or water waves in such a way that water and sound waves are called mechanical waves that requires a material medium for their propagation.
Electromagnetic waves do no require a material medium for propagation.
Electromagnetic waves are carried or transported by radiation and this can be passed through vacuums and different other materials. But mechanical waves such as water and sound waves requires a material medium for their propagation. They cannot pass through a vacuum.George rides his bike to his friend’s house that is 5 kilometers from his house. If he rides his bike at an average speed of 15 km/h, how long will it take him to get to his friend’s house?
Answer:
It will take George 20 minutes to get to his friends house.
Explanation:
divide 5km by 15km and get a constant of 3
George is riding at 15KM/HR meaning divide the hour by 3
60 minutes by 3 is 20
In what direction do the velocity vectors point in circular motion?
The velocity vector is always perpendicular to the radius. By radius, I mean the inward centripetal force that pulls the object to continue on its curved path. Without this inward force, the object would continue on a straight path tangential to the curve it was previously on.
the distance between pole and position of image can denoted by___
a)u. b)v. c)R. d)C
Answer:
b) v
Explanation:
the distance between pole and position of image can denoted by v
Does static electricity attract dead skin cells
Answer:
no i dont think so
Explanation:
Which of the following are electromagnetic waves?
Answer:
Microwaves
Radiowaves.
Answer:
radio waves
microwaves
infrared (IR)
visible light
ultraviolet light (UV)
X-rays
gamma rays
Explanation:
these are the electromagnetic spectrum. they are arranged in decreasing wavelength and increasing energy and frequency.
Someone pleaseeeee helppp
Explanation:
it's lead because see it's density if u have more density the voice will be slowest
How high will the ball go? I would really appreciate a step by step answer!
Answer:
y = 3.26 [m]
Explanation:
In order to solve this problem, we must use the following equation of kinematics.
[tex]v_{f}^{2}= v_{o}^{2}-2*g*y[/tex]
where:
Vf = final velocity = 0
Vo = initial velocity = 8 [m/s]
g = gravity acceleration = 9.81 [m/s²]
y = elevation [m]
Note: The negative sign in the equation above represents that the movement is againts the direction of the gravity acceleration.
Now replacing:
[tex]0=8^{2} -2*9.81*y\\19.62*y=64\\y=3.26 [m][/tex]
A paratrooper jumping from the plane lands safely ,why?
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match the reactants with the products.
This is an incomplete question, the complete question is given below.
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match the reactants with the products.
copper sulfate + oxygen
copper oxide
zinc sulfate + copper
aluminum chloride + copper
copper + water
copper sulfate + zinc →
aluminum + copper chloride →
copper oxide + hydrogen →
copper + oxygen →
Answer :
Copper sulfate + Zinc → Zinc sulfate + copper
Aluminium + Copper chloride → Aluminium chloride + copper
Copper oxide + Hydrogen → Copper + Water
Copper + Oxygen → Copper oxide
Explanation :
As we know that chemical reaction is a reaction in which two or more than two substances or reactants are reacted to give two or more than two different products.
According to the question:
Copper sulfate + Zinc → Zinc sulfate + copperThis reaction is a single replacement reaction in which zinc is more reactive than copper and zinc displaces copper from its salt to give products.
Aluminium + Copper chloride → Aluminium chloride + CopperThis reaction is a single replacement reaction in which aluminium is a more reactive element than copper and aluminium displaces copper from its salt to give products.
Copper oxide + Hydrogen → Copper + waterThis reaction is a single replacement reaction in which hydrogen displaces less reactive metals from their oxide to form water and the metal.
Copper + Oxygen → Copper oxideThis reaction is a synthesis reaction in which two different atoms or molecules combine to form single compound.
Answer:
Copper sulfate + Zinc → Zinc sulfate + copper
Aluminium + Copper chloride → Aluminium chloride + copper
Copper oxide + Hydrogen → Copper + Water
Copper + Oxygen → Copper oxide
Explanation:
guy above me
What is the relationship between the force of gravity and the distance between the two objects involved?
Answer:
They are inversely proportional
Explanation:
The force of gravity and the distance between two objects involved are inversely proportional to one another.
According to newton's law of universal gravitation "the force of gravity between two bodies is a product of their masses and inversely proportional to the distances between them".
The force of gravity and distance between two bodies are inversely related. The larger the distance between two bodies the lesser the force of gravity between them.For this graph to the right, what is the
velocity of the object? Show your work.
I dont see a mark where it is, if there was a line it would be marking the constant speed of it. There is just time(s) which probably stands for speed, and position(m) which probably stands for miles. There is a measurement of 50, down to 10. Please give me more explanation to this question and I may be able to help!
Which of the following is a force?
Momentum
Friction
Acceleration
Velocity
Answer:
friction
Explanation:
have you not heard frictional force?
have you ever heard momentum force or acceleration force
hope this helps. if not. please report it and let someone else try it
an object is moving along a straight road at the speed of 6 km per hour
a,how future away is the object every one hour
Answer:
6km
Explanation:
pls help as fast as you can WILL GIVE BRAINLEIST
Identify 3 specific situations in which machines make work easier and explain why
Answer:
Does the Work for youMore EfficientChanges the Size of ForceHere's why this is correct
According to BrightHubEducation, Machines make work easier by changing the size of force, direction of force, or distance the force acts on. Lifting a car with a flat tire and loosening the lug nuts can be accomplished by a single person thanks to simple machines. The jack and lug wrench are simple machines that alter the force needed to change the tire.
Hope this helps! <3
PLEASEEEE HELP MEEEEE!!!! WILL GIVE BRAINLIST!
Which point is located at (4, –2)?
On a coordinate plane, point A is 2 units to the left and 4 units up. Point B is 4 units to the right and 2 units down. Point C is 4 units to the left and 2 units up. Point D is 2 units to the right and 4 units down.
A
B
C
D
Answer:
It is B
Explanation:
Answer:
the other guy is right im answering so you can give him brainliest have a nice day :)
Explanation:
After a rocket falling through the air explodes, the net momentum of its
fragments...
A. increase
B. Decrease
C. stays the same
D. Is zero
it increase it momentum
calculate the density of gold if 96500kg mass of gold is adjusted in the volume of 5m cube
Answer:
96500÷5=19300
Explanation:
96500÷5=19300
The density of solid copper is 8960 kg/m3.
The density of molten copper is 7900 kg/m3.
Explain this difference in density by referring to the particle model and the arrangement of
atoms in the two states. (2)
Explanation:
The density of a solid copper is 8960kg/m^3 while the density of a molten copper is 7900kg/m^3 this is due to the difference in the state of matter, the solid copper is in solid state while the molten copper is in form of a liquid. In the solid copper atoms are tightly pack while they atom are not tightly packed.
Gravity and inertia are the two forces that keep Earth in its orbit as it travels around the Sun. What would happen if the force of inertia disappeared?
A.
Earth would leave the solar system.
B.
There would be no changes in Earth's orbital path.
C.
Earth would break apart.
D.
Earth would be pulled into the sun.
Which of the following is NOT a component of the systemic circuit?
A. Left atria
B.Left ventricle
C. Pulmonary aortic valve
D. Bicuspid valve
Answer:
THE CORRECT ANSWER IS OPTION ( c )Pulmonary aortic valve
Explanation:
Pulmonary aortic valve is not a component of systemic circuit.
Systemic circuit?Systemic circuit is a part of circulatory system that help to transport blood to different part of the body. It transport blood from the left ventricle to the capillaries and then other part of the body.
Therefore, Pulmonary aortic valve is not a component of systemic circuit.
Learn more about systemic circuit.
https://brainly.com/question/2035735
#SPJ2