Answer:
When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force.
The force you apply to a machine is called the effort force.
What is a machine?A machine is a device that is designed to make work easier by changing the direction or magnitude of a force. Machines can be simple, like a lever or pulley, or complex, like an engine or computer.
The basic principle behind all machines is the idea of mechanical advantage, which allows us to do more work with less effort by trading off the force for distance.
The efficiency of a machine is a measure of how much of the input energy is converted into useful output work.
The efficiency of a machine is calculated as the ratio of output work to input work, expressed as a percentage:
Efficiency = (Output work / Input work) x 100%
Output work refers to the amount of work that is done by the machine,
input work is the energy that is put into the machine to make it work.
The difference between the two is the energy that is lost to friction, heat, or other inefficiencies.
Mechanical advantage is a measure of the amplification of force achieved by a machine. It is defined as the ratio of the output force(Load) to the input force (effort). A machine with a mechanical advantage greater than 1 will make it easier to do work by amplifying the force applied to it.
The mechanical advantage of a machine can be calculated using the following formula:
Mechanical Advantage = Output Force(load) / Input Force(effort)
The velocity ratio is a measure of how much the speed of the machine is changed relative to the input speed. It is defined as the ratio of the distance moved by the effort or input force to the distance moved by the load or output force. Velocity ratio is commonly used in the analysis of machines such as pulleys and gears.
The velocity ratio of a machine can be calculated using the following formula:
Velocity Ratio = Distance moved by effort force / Distance moved by load force
Here in the question,
The force you apply to a machine is called the effort force. The effort force is the force applied to a machine, such as a lever or a pulley, in order to move an object or overcome resistance.
In simple machines, the effort force is used to overcome a load or resistance, which is the force that opposes the movement of the object being moved.
The relationship between the effort force and the load or resistance is often described in terms of mechanical advantage, which is the ratio of the output force to the input force. By applying a smaller effort force, a machine can increase its mechanical advantage and make it easier to move a larger load or overcome a greater resistance.
Hence the force we applied to a machine is called effort force.
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Which BEST explains why rainbows only appear when there is rain and sun? a)The rain needs to dim the light for them to appear. b)The combination of light and water creates a prismatic effect. c)The sun restricts the light rays that impact with the water. d) Heavy rain and little sun produce the strongest rainbows.
Answer:
C
Explanation:
Answer:
You're answer would be B.
Explanation:
Fact: A water droplet refracts and disperses the incident sunlight, then reflect it internally and finally refract it again, when it emerges out of water droplet thus acting like a prism.
In Option B, It states: The combination of light and water creates a prismatic
Therefore, This option is true! However, I would say the combination of light and water make more of a chroma effect to water (my opinion)!
-♥ Have a nice day ♥-
when he drove home his car broke down it wasnt due to a problem with the wheels it was the?
Q2: (2 marks) (show your work)
What is the net force on the box shown below?
30 N
60 N
20 N
Answer:
Net force = the difference between the forces of two directions
Net force= 60N-(30N+20N)
=60-50
Therefore Net force = 10N
explain how a syringe dra
ws blood from a patient's body
Answer:
You first push in then when the syringe is full push the out
Explanation:
1. in
2. out
but u should watch a You-tube video just in case
I hoped this helped!
five properties of light
Answer:
Light is electromagnetic radiation that has properties of waves. The electromagnetic spectrum can be divided into several bands based on the wavelength. As we have discussed before, visible light represents a narrow group of wavelengths between about 380 nm and 730 nm.
OR
The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.
Why does no one actually help on here?
Answer: i dontt know everyone is annoying
Explanation:
What is always true about the total amount of oxygen and carbon dioxide in the test tube?
what are four forms of energy
Answer:
The four forms of energy are:
1. Kinetic Energy
2. Radiation Energy
3. Potential Energy
4. Chemical Energy
Explanation:
Above are listed the four main types of energy. Hope this helps! :)
Displacement is used to measure
A.
weight
B.
mass
C.
distance
D.
volume
Answer:
D. Volume
Hope this helped <3
List 3 main types weathering
Answer:
3 types of weathering are, physical, chemical and biological weathering.
Explanation:
Hope this helps and have a wonderful day!!!
Materials that hold electrons very tightly, and thus don't allow much static electricity to occur around them, are called
The gravitational force between two objects will be greatest in which of the following situations?
Both objects have small masses are close together.
One object has a large mass, and the objects are close together.
Both objects have large masses and are close together.
Both object have large masses, and they are far apart.
Answer:
One object has a large mass, and the objects are close together.
Most metallic elements, such as copper
and iron, have high melting points. This
is a useful property because
F. it keeps cars made of metal from
becoming hot on summer days
G. it enables people to use pots and pans
made of metal to cook food
H. it prevents machine parts made of
metal from rusting
J. it makes metals easier to melt so they
can be poured into molds to make
precision tools
Answer:
G. it enables people to use pots and pans made of metal to cook food
Explanation:
Metals are known to be substances with a relative high melting point, which means that it takes a very high temperature to melt them. As used in this question, copper (Cu) and iron (Fe) at metallic elements that have high melting points.
One advantage of this property based on the options provided is that "it enables people to use pots and pans made of metal to cook food". This is because cooking food requires subjecting them to a constant temperature from a heat source e.g cooker or stove.
The material used to hold the food being cooked must possess a very high melting point to withstand the heat, hence, the importance of these metallic substances. Most pots and pans are made of steel, an alloy of iron, hence, they have high melting point.
The relationship between body mass body weight and body density
Answer:
The formula for calculating Density is:
= Mass / Volume
From this formula, we can say that the relationship between Mass and Density is a direct one. In other words, if mass is increasing - all else being equal - then density will increase as well.
If mass however was decreasing, density would have to decrease as well.
For example, assume 3 bricks have masses of 5kg, 10kg and 15kg. Also assume that the bricks all have the same volume of 5 m³.
Density of 5kg brick = 5 / 5 = 1 kg/m³
Density of 10kg brick = 10 / 5 = 2kg / m³
Density of 15kg brick = 15 / 5 = 3 kg /m³
Notice how density increases as mass increases and decreases when mass decreases.
1. An ideal gas changes from a state defined by pressure P1 and volume V, to a state defined by pressure P2 and volume V2. Which set of properties is
independent of the path between the two states?
A work performed by or on the gas
B change in internal energy of the gas
C heat transfered to or from the gas
D work and heat transfer involving the gas
According to Newton's third law, what other force must be happening?
Answer:
The desk is pushing back on Arianna
Explanation:
If you read newton's 3rd law, it states that for every action force (Arianna pushing the desk), there is an equal reaction force (The desk pushing back on her). This is true for EVERY OBJECT THAT HAS MOTION!
About 40,000 J of energy is stored in a typical 1.5-V D-cell battery. If two such batteries are joined to produce a total of 3.0 V in a flashlight circuit and cause 2.0 A of current to flow through the flashlight bulb, how long will the batteries be able to deliver power to the flashlight at this level?
URGENT PLS HELP
Answer:
Time = 13333.33 s = 222.22 min = 3.7 h
Explanation:
The total amount of energy in two cells combined will be:
[tex]Total\ Energy = 40000\ J + 40000\ J\\Total\ Energy = 80000\ J\\[/tex]
Now, we calculate the power of the batteries:
[tex]Power = (Voltage)(Current)\\Power = (3\ V)(2\ A)\\Power = 6\ Watt[/tex]
Now, we use the following formula to calculate the time the batteries will be able to deliver the power to the flashlight:
[tex]Total\ Energy = (Power)(Time)\\\\Time = \frac{Total\ Energy}{Power}\\\\Time = \frac{80000\ J}{6\ Watt}[/tex]
Time = 13333.33 s = 222.22 min = 3.7 h
What and where is the asteroid belt?
Please ANSWER THIS
Answer:
The asteroid belt is a region of our solar system, between the orbits of Mars and Jupiter, in which many small bodies orbit our sun.
Explanation:
Hope this helps!
Answer:
The asteroid belt (sometimes referred to as the main asteroid belt) orbits between Mars and Jupiter. It consists of asteroids and minor planets forming a disk around the sun. It also serves as a sort of dividing line between the inner rocky planets and outer gas giants.
Explanation:
Hope this helps! :)
please see the picture
Answer:
t.f. are you sure that's english? it looks like not a real thing
Explanation:
5. How many kilowatt-hours of energy would be used by a 40 W bulb that runs for 10 hours every
day during the course of one year?
Answer:
E = 0.4 kWh
Explanation:
Given that,
The power of a bulb, P = 40 W
Time, t = 10 hours
We need to find the energy used by the bulb. Let it is equal to E. So,
[tex]E=P\times t\\\\E=40\times 10\\\\E=400\ W-h\\\\or\\\\E=0.4\ kWh[/tex]
So, 0.4 kWh of energy would be needed.
Answer: 146,000 Wh or 146 kWh
Explanation:
65 days × 10 hours × 40 W = 146,000 Wh or 146 kWh
What is the average velocity of the particle from rest to 9 seconds?
1 meter/second
B.
2 meters/second
C.
3 meters/second
D.
4 meters/second
HELP ME ASAP PLZZZ NOW!!!
Answer:
B. It's nucleus releases energy
Explanation:
Can you help me please?
Answer:
a/ oscillating charges
if the volume of a fixed mass of hydrogen in a container is 30cm³ at a pressure of 50mmHg find the volume of the gas if the pressure is 60mmHg at constant pressure
25
Explanation:
P1V1=P2V2 hence 50×30=60v
V=1500÷60
V=25
When does the edge of the water advance farther inland- when the ocean's floor is a gradual slope or steep slope?
Answer:
The correct answer is when the slope is steep.
Explanation:
The advancement of water inland is dependent on the rate at which water wears off the continental shelf and the coastal plain. The higher the amount of rainfall, and the harshness of the dry spells, the faster the rate of erosion that occurs at the coastal plain.
As the erosion increases, the coastal plain becomes steeper. The steeper the plain, the water flowing erodes the coastal plain at a faster rate. Hence the water advances farther inland faster than where the slope is gentle or gradual.
Cheers
when people walked on the moon, they found that they could jump higher than theu could back on earth. why is this true?
Answer:
There is less gravity on the moon
hope this helps
have a good day :)
Explanation:
A 0.547 kg pizza is thrown straight up in the air. At a height of 2.30 m above the surface of the earth it has a speed of 5.00 m/s. Calculate the total mechanical energy of the pizza crust.
Answer:
The total mechanical energy of the pizza crust is 19.2 J.
Explanation:
Mechanical energy is that which a body or a system obtains as a result of the speed of its movement or its specific position, and which is capable of producing mechanical work. Then:
Potential energy + kinetic energy = total mechanical energy
Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a certain mass and in a position of rest, until it reaches a certain speed.
Kinetic energy is represented by the following formula:
Ec = ½ *m*v²
Where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m / s).
In this case:
m=0.547 kgv= 5 m/sReplacing:
Ec = ½ *0.547 kg*(5 m/s)²
and solving you get:
Ec= 6.8375 J
On the other hand, potential energy is the energy that measures the ability of a system to perform work based on its position. In other words, this is the energy that a body has at a certain height above the ground.
Gravitational potential energy is the energy associated with the gravitational force. This will depend on the relative height of an object to some reference point, the mass, and the force of gravity. Then for an object with mass m, at height h, the expression applied to the gravitational energy of the object is:
Ep = m*g*h
Where Ep is the potential energy in joules (J), m is the mass in kilograms (kg) is h the height in meters (m) and g is the acceleration of fall in m / s² (approximately 9.81 m/s²)
In this case:
m= 0.547 kgg= 9.81 m/s²h= 2.30 mReplacing
Ep= 0.547 kg *9.81 m/s²* 2.30 m
and solving you get:
Ep= 12.342 J
So:
Total mechanical energy= 12.342 J + 6.8375 J
Total mechanical energy= 19.1795 J≅ 19.2 J
The total mechanical energy of the pizza crust is 19.2 J.
a baseball with a mass of 0.8 kg is moving at asperd of 45.0 m/s . what is the baseballs kinetic energy
SOMEONE HELP PLEASE!!
Answer:
0.5*0.8*45^2. =810J
Explanation:
KE=1/2 mv^2
pls helppp :)List several examples of applied force, normal force, and friction that you’ve observed in your life.
ill mark brainliest if the answer is actually helpful:p
Answer:
an example for applied force is
Explanation:
The applied force is the force applied to the object to either displace it or change its shape.
HOPE THIS HELPS
The vertical columns on the periodic table of elements are called groups.
A True
B. False
Answer:
True
Explanation: