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Lesson: simple machine
Great answer will be brainliest answer
Answers
Answer:
a. Value of MA is always lesser than VR because mechanical advantage decreases due to the friction and weight of moving parts of the machine.
b.Efficiency of lever is never 100 or more because it will always lose some tiny (sometimes immeasurable) percentage of power due to the lever bending.
c.Because it helps to apply more torque.
d.Because the upright snip has the blades rotated 90° from the handles.
e.because some of the input work is used to overcome friction.
f.because the load arm is always longer than effort arm.
g.because the effort arm is always longer than load arm of these Lever.
h. because if the effort distance is greater than load distance there will be magnification of force and the metals could easily cut.
i. because the wheelbarrow's wheel and axle help the wheelbarrow to move without friction thus making it easier to push or pull.
Related Questions
what do you think is the purpose of a periscope? Are there any other uses for periscopes besides for submarines?
Answers
Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fibre optics instead of mirrors and providing magnification operate on submarines and in various fields of science
Raising the temperature of a gas will increase its pressure to
volume of the gas would do what
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Answer: Boyle found that when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases. When the pressure of a gas is decreased, the volume increases. This relationship between pressure and volume it's called Boyle's law.
Explanation: In the 1600s, Boyle measured the volumes of gases at different pressures. Boyle found that when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases. When the pressure of a gas is decreased, the volume increases. This relationship between pressure and volume it's called Boyle's law.
identify two ways in which friction is not useful in science
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Answer:
Friction between brakes and the wheels of a car or bicycle helps the vehicles slow down.If you do not lubricate your bike regularly with oil, the friction in the chain and axles increases.Nate ran the 100 meter dash in 24 seconds. What was his average speed?
Answers
Answer:9.32 mph 250 meters per min
Explanation:
¿Qué trabajo efectúa una fuerza de 110 N para recorrer un desplazamiento de 20 m si el ángulo entre las direcciones de la fuerza y el desplazamiento es de 30 grados?
Answers
El trabajo de la fuerza aplicada es 1905 J
Los datos del problema son
Fuerza F = 110 N, La distancia recorrida d = 20 m El ángulo entre la fuerza y el desplazamiento θ = 30º
El trabajo se define por el producto escalar entre la fuerza y el desplazamiento, las letras en negrita indican vectores
W = F. D
Donde W es el trabajo, F la fuerza, d el desplazamiento y el punto representa el producto escalar,
W = F d cos θ
Esta expresión es un escalar y θ es el ángulo entre la fuerza y la distancia
Calculamos el trabajo
W = 110 20 cos 30
W = 1905 J
Donde J es la unidad de trabajo
El trabajo de la fuerza que es un escalar es 1905 J
Puede obtener más información sobre el trabajo aquí:
brainly.com/question/20395239
help me please i dont understand
Answers
Answer:
It is b
Explanation:
The question tells you that the distance was increased 3 times the original distance, which means it was moved 3 times
a car initially at 65.00 m/s accelerates at 22.39 m/s^2. How far has the car traveled before it comes to a stop
Answers
Answer:
94.35 meter
Step by step explanation
HELP PLEASE ASAP!!!!
scientists use their imagination. Make a claim about the difference between being imaginative in doing science and doing pseudoscience. Use evidence to support your claim and explain your reasoning.
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On the other hand, pseudoscientists tend to be imaginative by not basing their explanation scientifically. Since they don’t use accepted scientific methods, they mostly come up with information based on person opinions and experiences.
What are the two main
categories of particles and
antiparticles?
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Answer:
Particles can be classified as hadrons – baryons and mesons – and leptons, each with its anti-particle, and they should know that interactions between these particles can be described in terms of transfer of other particles known as vector bosons.
Explanation:
Your Welcome, if you could give me Brainlist I would appreciate it!
help me please i dont understand
Answers
Answer:
0.58
Explanation:
Sinẞ = opposite ÷ hypotenuse
Sinẞ = 5 ÷ 8.6
Sinẞ = 0.5814
Sinẞ ≈ 0.58
Answer: 0.58
Explanation:
hope this helps
Fun Fact: Peanuts aren’t technically nuts
what is force (just trying this app)
Answers
Answer: F= force
m=mass of an object
a=acceleration
Explanation: Force is kinda like gravity, but the real noun would be “strength or energy as an attribute of physical action or movement.”
a scalar is a value that:
a) has neither magnitude nor direction
b)has only direction
c)has both magnitude and direction
d) has only magnitude
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Explanation:
A scalar is a value that has only magnitude.
¿Qué información se puede obtener de un gráfico rapidez versus tiempo?
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Answer:
la velocidad se mide con el tiempo del tiempo que tarda el tiempo se mide por la hora del día y el reloj
Explanation:
Creo que es correcto
explain the dangers of electrostatics
Answers
Presence of flammable gases that can lead to explosion
prove- s=UT+1/2 of 2
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Answer:
I hope it helped U......
A constant force acts on a body causing the momentum of the body
to increase. Which expression relates the force to the momentum and the time taken?
Answers
The expression that relates the force to the momentum and the time taken is [tex]F =\frac{\Delta P}{t}[/tex].
Let the constant force causing change in momentum, = FLet the time of force action = t
The impulse experienced by the body at the given constant force and time is calculated as follows;
[tex]J = \Delta P = mv[/tex]
where;
ΔP is change in momentum
The force acting on a body is given by Newton's second law of motion;
[tex]F = ma\\\\F = \frac{mv}{t} \\\\Ft = mv\\\\Ft = \Delta P\\\\F = \frac{\Delta P}{t}[/tex]
Thus, the expression that relates the force to the momentum and the time taken is [tex]F =\frac{\Delta P}{t}[/tex].
Learn more about impulse and momentum here: https://brainly.com/question/23555361
a substnace made up of two or more elemts is known as
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Compound : A substance made of two or more elements that are chemically combined in fixed amounts. Periodic Table of Elements : A table in which all the known elements are arranged by properties and are represented by one or two letters, referred to as chemical symbols.
if you know the time it took an object to travel between two points and the position of the object at the points, can you determine the object's instantaneous velocity
Answers
Answer:
Yes
Explanation:
[tex]v = \frac{ds}{dt} \\ where \: we \: need \: to \: know \\ \: change \: in \: displacement \\ \: and \: the \: time \: taken[/tex]
if you know the time it took an object to travel between two points and the position of the object at the points, then we can determine the object's instantaneous velocity by using the differential rate of the displacement function with respect to the time.
Instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
velocity= displacement / time taken
for instantaneous velocity = [tex]\frac{dS}{dt}[/tex]
Thus, If you know how long it took an item to go between two places and where it was when it got there, you can use the differential rate of the displacement function with respect to time to calculate the object's instantaneous velocity.
Learn more about Velocity from here,refer to the link;
brainly.com/question/18084516
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Differentiate the following functions with respect to x
x³ + 2x² - 5
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Answer:
d f(x) / dx = d (x^3 + 2 x^2 - 5) /dx = 3 x^2 + 4 x
(Use the rule for differentiation)
Answer:
3x² + 10x
hope it's helpful
After using soap to wash dishes by hand, if is sometimes difficult to keep your hands from remaining stick. Explain why rinshing your hand in lemon juice would make then less slick
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Tom walked slowly along the road, stopped to look at hid watch, realized he was late, and then started running.
Which table matches with this story?
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Answer:
Box U
Explanation:
Lets clarify
He started from rest hence distance should be started from 0.He stopped in middle hence there should be a zero in the middle .(Only in U)Then the distance become higher as he started running.Answer: Table U matches the story
Using the graph above determine the change in velocity between 0.0 s and 4.0 s.
- 1.0 m/s
1.0 m/s
-8.0 m/s
- 16 m/s
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The strength of a froce is usually expresses by its
A) direction
B) situation
C) magnitude
D) motion
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Answer:
motion
Explanation:
carsnejejsejsejjsejsj3bsbejze s
The strength of a force is usually express by its magnitude .
An Internet connection transfers 32 kilobytes per second. How many bytes are being transferred every second?
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Answer:
32,000
Explanation:
There are 1,000 bytes in each kilobyte, so therefore 32,000 bytes are transferred each second.
convert 46 kg to gram
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Answer:
46000g
Explanation:
As we know that 1kg = 1000g
Therefore, 46kg = 46000g
8. A girl is padaling her blcycle at a velocily of 0.10 km/min. How far will she travel in two hours?
Answers
Explanation:
2 h = 120 min
v = 0.1 km/m
distance = v × t
= .1 × 120
= 12 km
A geologist was digging through Earth's surface and found deep in the earth's crust a rock that has flattened layers with a fossil imprinted in the rock. Choose the best scenario that lead to the formation of this rock.
Answers
Answer:
Please give options
Explanation:
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Does a fan that is not spinning have energy?
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Answer:
Yes, when dealing with electricity as long as there is an input source there is always built up energy waiting to be used also known as kinetic energy. The fan is not spinning but if it were turned on it would spin instantaneously.
what is the principle of charge quantisation?
Answers
Answer:
Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.
Explanation:
Answer the following below.
Answers
Answer:
1. Radiation
2.Conduction
3.Radiation
4.Convertion
5.Convection
6.Conduction
7.Convertion
8.Conduction
