By lubricating its components, a machine can operate more effectively and send less energy to the environment as heat by reducing friction between its parts.
Due to the machine's simplicity of use and less friction, the input and output forces might both increase.
What is lubrication?To reduce wear and tear and friction in a contact between two surfaces, lubrication is a procedure or technique that uses a lubricant. The area of tribology includes the study of lubrication as a discipline.
Solid body interactions are decreased through the design of lubrication mechanisms, such as fluid-lubricated systems, which carry the given load either entirely or partially by hydrodynamic or hydrostatic pressure (and consequently friction and wear). Different lubrication regimes can be recognized depending on how far the surfaces have separated.
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The source of power in a nuclear power plant comes from
What process is used in this example? You have learned that all living things use energy. Your dog is a living thing. She must use energy.
1- Inductive reasoning
2-Deductive reasoning
3-The scientific method
4-Theory development
A voltmeter reads 200 V between parallel plates that are 2 cm apart. what is the strength of the electric field between the two plates?
A) 1.0 x 10^3 N/C
B) 1.0 x 10^2 N/C
C) 1.0 x 10^4 N/C
D) 1.0 x 10^1 N/C
UPDATE: ANSWER IS C
ANSWER ASAP
The specific heat of aluminum is 0.125 cal/g °C. If 12.5 grams of aluminum were heated from 20.0 °C to 100.0 °C, ____ calories of heat energy would be absorbed by the aluminum.
INTEGRATED PHYSICS AND CHEMISTRY
Answer:
125 is your answer.
Explanation:
Dwarf galaxies are generally only about one-fifth the size of the andromeda galaxy. true or false
Answer
Its False
Explanation
Dwarf galaxy is a small galaxy which consist of about several billion stars,
The Andromeda galaxy is a spiral galaxy is the closest big galaxy to our Milky Way. We can see the Andromeda galaxy from earth.
But it is not proved that Dwarf galaxies are only about one-fifth the size of the andromeda galaxy.
Two identical positive charges exert a repulsive force of 6.2 × 10−9 n when separated by a distance 3.7 × 10−10 m. calculate the charge of each. the coulomb constant is 8.98755 × 109 n · m2 /c 2 . answer in units of
c.
Use Coulomb's Law formula to calculate the charge of each identical positive charge given the force and distance. Each charge is 4.0 × 10^-19 C.
We can use Coulomb's Law formula: F = k * (q^2) / r^2, where F is the force, k is the Coulomb constant, q is the charge, and r is the distance between the charges.
Given: F = 6.2 × 10^-9 N, r = 3.7 × 10^-10 m, and k = 8.98755 × 10^9 N · m^2 /C^2. Plugging these values into the formula, we get q = √(F * r^2 / k).
Calculating: q = √(6.2 × 10^-9 * (3.7 × 10^-10)^2 / 8.98755 × 10^9) = 4.0 × 10^-19 C.
Therefore, each charge is 4.0 × 10^-19 C.
*PLEASE HELP WILL GIVE BRAINLIEST*
1. What is the period of a wave with a wave speed of 12 m/s and a frequency of 60 Hz?
A. 5.0 s
B. 720 s
C. 0.20 s
D. 0.02 s
Answer: 0.02s
Explanation:
Read each scenario and then answer the questions. Scenario A: A shopping cart is pushed a distance of 3 m by a force of 15 N. Scenario B: A shopping cart is pushed a distance of 4 m by a force of 12 N. Scenario C: A shopping cart is pushed a distance of 6 m by a force of 10 N. Which scenario requires the most work? Which scenario requires the least work?
Answers are C and A
Answer:
Read each scenario and then answer the questions.
Scenario A: A shopping cart is pushed a distance of 3 m by a force of 15 N.
Scenario B: A shopping cart is pushed a distance of 4 m by a force of 12 N.
Scenario C: A shopping cart is pushed a distance of 6 m by a force of 10 N
Which scenario requires the most work?
Answer: Scenario CWhich scenario requires the least work?
Answer: Scenario AHELP
An individual having difficulty with high blood pressure may be experiencing an imbalance in all of the following hormones except __________.
A. growth hormone (GH)
B. estrogen
C. norepinephrine
D. cortisol
The answer is; B
The fluctuation of estrogen in the body is common and its function in a cycle helps regulate the menstrual cycle in females. Therefore, its imbalance is not associated with blood pressure.
Growth hormone affects the renin-angiotensin system that influences blood fluid levels hence affects blood pressure. Norepinephrine is a neurotransmitter that affects dilation and vasoconstriction of blood vessels and the hearts rate hence affects blood pressure. Cortisol is a stress hormone and its increase in the body increases blood pressure. Cortisol is only produced in periods of stress and should not be produced in prolonged periods. Its imbalance, therefore, affects blood pressure.
the other answer is right, the right option is B. estrogen.
An amplifier has a 50 watt output and a 5 watt input. what is the gain in decibels for this amplifier, rounded to the nearest decibel?
The amount of diffraction that a sound wave undergoes depends on
Whenever a charged particle encounters a magnetic field, the particle tends to spiral around the magnetic field lines. as it does, it emits electromagnetic radiation. radiation produced in this way is called _______. the radiation is nonthermal, which means there is no link between the emission and the temperature of the radiating object. synchrotron radiation?
(Psychology).
Learning to listen and speak to other people can be considered part of the _____ and the _____ dimensions of development.
A. moral; physical
B. cognitive; physical
C. moral; psychosocial
D. cognitive; psychosocial
Learning to listen and speak to other people can be considered part of the C. moral and the psychosocial dimensions of development.
In the context of development, the moral dimension refers to the development of personal values, standards, and an understanding of right and wrong. This dimension is crucial for social interactions and understanding the perspectives and feelings of others, which is essential for effective communication. The psychosocial dimension of development involves the growth of one's personality, social skills, and the ability to form relationships with others. It encompasses the process of learning to listen and speak to other people, as these are fundamental social skills that enable individuals to interact and communicate effectively within their social environment.Please answer ASAP
19. Fill in the blank A charged particle moving in a magnetic field experiences a deflecting in a direction ___ to the magnetic field.
In a four stroke engine, the piston compresses the gas mixture during the ______ stroke.
Answer : Compression / Power
Explanation : In a four stroke engine, the piston compresses the gas mixture during the power / compression stroke.
In the second stage of compression stroke, the stroke begins at bottom dead center, or just at the end of the suction stroke, and ends at top dead center.
In this type of stroke, the piston usually compresses the air-fuel mixture in preparation for ignition during the power stroke.
Does sound travel outside earth's atmosphere in space explain
Which one is the best to measure a tree kilometers,millimeters,liters or meters?
A light bulb whose resistance is 240 ohms is connected to a 120 voltage source. What is the current through the bulb?
Remember to identity all of your data, write the equation, and show your work.
The current through the bulb will be 0.5 A. The principle of ohm's law is used in the given problem.
What is ohm’s law?Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.
This current-voltage connection may be expressed mathematically as,
The Equation of Ohm's Law is found as;
V=IR
[tex]\rm I = \frac{V}{R} \\\\ \rm I = \frac{120}{240} \\\\ I= 0.5 \ A[/tex]
Hence the current through the bulb will be 0.5 A.
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What type of lens causes parallel rays to come together after passing through the lens?
what will be the impact of continued water pollution and overuse on humans, and natural ecosystems?
Assuming the input of energy continues for another 2.5 seconds, where will the particle be?
equilibrium
positive maximum
negative maximum
cannot be determined
Noah modeled a layer of the sun by showing how particles of rice move up and down in boiling water. Which layer of the sun did Noah model? Convective zone Inner core Photosphere Radiative zone
Answer:
The answer is A. Convection Zone
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Why are hair samples considered to be both useful and cumbersone of tace evidence?
Which type of plate boundary would be most likely to lead to above-ground volcanic activity? Convergent Divergent Collisional Transform
Answer:
convergant
Explanation:
the image shows an electromagnet made with a 1.5-volt battery how would the magnetic field be affected if you replaced its 1.5-volt battery (on the left) with a 9-volt battery (shown on the right) while using the same nail and coil?
A. The magnetic field strength would increase
B. The magnetic field would not be affected by this change
C. The magnetic field strength would decrease
D. The magnetic field would change direction more frequently
The magnetic field strength is directly proportional to the current through the circuit. When the voltage is increased, current also increases, results in a rise in magnetic field strength. Thus, option A is correct.
What is magnetic field?A magnetic field is the field produced by the magnetic flux or field lines with a magnitude and direction. A magnetic field is always associated with an electric field where, the magnitudes of both field are in direct proportion.
The magnetic field lines will be perpendicular to the electric flux. According to Ohm's law, voltage and current through a circuit are directly proportional to each other.
As the voltage in a circuit is increased, the current through it increases which n turn result in a hike in magnetic field strength. Therefore, when 1.5 volt is changed by 9 volt battery in the circuit, magnetic field strength would increase.
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ASAP Which of the following has kinetic energy? a. a rock poised for a fall b. an archer’s bow that is drawn back c. a rolling bowling ball d. a car waiting at a red light
The correct answer is c. a rolling bowling ball.
Explanation:The correct answer is c. a rolling bowling ball.
Kinetic energy is the energy an object possesses due to its motion. It depends on the mass and velocity of the object. In this case, a rolling bowling ball has kinetic energy because it is moving. The other options do not involve motion and therefore do not have kinetic energy.
For example, a rock poised for a fall has only potential energy, as it does not possess motion. An archer's bow that is drawn back also has potential energy stored in the stretched bowstring, but it does not have kinetic energy until the arrow is released. A car waiting at a red light is stationary and not in motion, so it does not have kinetic energy.
A photon
a. is a quantum of light
b. is a wave
c. means bundle of energy
A photon is a quantum of light, it is also a wave and it is packet of energy. Hence all option is correct.
What is Photon ?Photon is a particle which is associated with light wave, it carries both energy as well as momentum. Photon is quantum of light. when a photon moves in the medium it moves as a wave. hence it has dual nature as particle and wave. when light travels in the medium numbers of photons called as bundle of photons travels.
Hence photon is a wave, quantum of light and bundle of energy.
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a car has a mass of 12,000 kg. What is it’s acceleration when the engine exerts a force of 600 N? (Formula: F=ma)
Find the acceleration of a automobile whose speed increases from 10 m/s to 22 m/s in 8 seconds.
One light-hour is the distance light travels in one hour. the speed of light is about 300,000 km/s (3 × 10^5km/s). if jupiter is 0.72 light hours from the sun, how far is this?
Answer:
Jupiter is [tex]7.776*10^8km[/tex] away from the sun.
Explanation:
The speed of light is [tex]3*10^5km/s[/tex]. This means, since there are 3600 seconds in an hour, the distance light travels in 1 hour is:
[tex]3*10^5*3600= 1.08*10^9km[/tex]
and this distance is called the light-hour.
Since Jupiter is 0.72 light-hours away from the Sun, its distance in km from the sun is:
[tex]1.08*10^8*0.72=7.7776*10^8km[/tex]
Thus, Jupiter is [tex]7.776*10^8km[/tex] away from the sun.