Resistive force against 10.0 N of force to lift an object with a single, fixed pulley will be 10 N
Resistive force is a force, or the vector sum of numerous forces, whose direction is opposite to the motion of a body
A resistive force is one that inhibits or resists the motion of an object. It acts in a direction opposite to any motion or applied force that is trying to move the object. The most common resistive force is friction where an object is held back from sliding across a surface.
The force that the string (or similar) exerts on the object in these types of problems is called tension. Resistive Forces These include: Friction which is a force that prevents, or tries to prevent, the slipping or sliding of two surfaces in contact.
Hence , resistive force against 10.0 N of force to lift an object with a single, fixed pulley will be 10 N but in opposite direction to where pulley is been lifted .
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The ___________________theory explains the formation of our solar system from a mass of gas, ice, and dust particles.
The Nebular theory explains the formation of our solar system from a mass of gas, ice, and dust particles.
The Nebular theory is basically a theory for how the solar system formed, one that suggests that the Sun and planets were once part of a spinning nebula of gas and dust. The in-depth theory outlining how a cloud of interstellar gas and dust gave rise to our solar system.The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planetsLearn more about The Nebular theory from here:https://brainly.com/question/25108783
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Which one of the following possesses the highest elasticity? a. Rubber b. Glass c. Copper d. Steel
Answer:
Correct option is D)
Steel
Answer:
Steel gives
Explanation:
Glass: 50−90GPa
Rubber:0.01−0.1GPa
Steel:200GPa
Copper: 117GPa
Which one of the following conditions is linked to poverty, insufficient food intake, poor food quality unsanitary living conditions, and improper feeding of infants and young children?
Obesity
Heart disease
Cancer
Protein-energy malnutrition
Protein-energy malnutrition is the condition linked to poverty, insufficient food intake, poor food quality, unsanitary living conditions, and improper feeding of infants and young children. The correct option is 4.
Protein-energy malnutrition (PEM) is a type of malnutrition that occurs when there is a deficiency in both protein and energy (calories) intake. It is often associated with impoverished and disadvantaged populations who lack access to an adequate and balanced diet. PEM can lead to severe health consequences, including stunted growth, weakened immune system, and increased susceptibility to infections and diseases.
Efforts to combat PEM include improving food security, promoting better nutrition practices, and enhancing access to essential nutrients through supplementation and fortification of food. Addressing poverty, improving living conditions, and ensuring proper healthcare and education are also crucial in preventing and treating protein-energy malnutrition in vulnerable populations.
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If the resistance in a circuit connected to a constant current is halved, how is the voltage in the circuit affected?.
The voltage is reduced by a factor of 2.
What is resistance?
Resistance is a proportion of the opposition to flow stream in an electrical circuit. Opposition is estimated in ohms, represented by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who concentrated on the connection between voltage, current and resistance.The equation to compute the obstruction utilizing Ohm's Law is given as keeps:R = V I.
where,
R is the resistance of the resistor R in ohms (Ω)
V is the voltage drop in the resistor in volts.
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A telescope mirror is part of a sphere with a radius of 3 m. what is the focal length of the mirror?
The focal length of the mirror will be 0.33 m
Focus is defined as the point through which the reflected light rays pass (or appear to pass) when incident light rays are parallel to the principal axis. It is located at the midpoint of pole and center of curvature. The distance between the pole and the focus of the mirror is called the focal length of the mirror.
F =2R or focal length of a mirror is half of its radius of curvature.
The radius of curvature of convex or concave mirror is equal to two times of the focal length of convex or concave mirror. The radius of curvature is the radius of sphere formed by the convex or concave mirror. It is also equal to the distance between the pole and center of curvature.
F = 1/R
R = 3 m (given )
F = 1 / 3 = 0.33 m
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State two examples where the factor perpendicular is practically used to increase pressure?
Pressure can be calculated by Pressure=Force/Area.
Therefore, if the area is decreased or reduced then pressure will be increased.
What is Pressure?The physical amount of force applied to a certain region is known as pressure. Pressure is defined as force per unit of area. The pressure being applied to a body may be calculated by taking the amount of force being applied and dividing it by the area of contact.
Pressure=Force/Area.
two examples where the factor perpendicular is practically used to increase pressure
Nails have pointed ends to increase pressure by minimizing surface area.Knifes are sharpened to increase pressure or apply maximum pressure with less force.to learn more about Pressure go to - https://brainly.com/question/945436
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When both glucose and lactose are present in the media in which e. coli is growing, which is the preferred carbon source?
When both glucose and lactose are present in the media in which E. coli is growing the preferred carbon source of is glucose.
About lac operon:
The lac operon of E. coli contains genes involved in lactose metabolism which is expressed when lactose is present and glucose is absent.The lac repressor and catabolite activator protein (CAP) are two regulators that control the operon's "on" and "off" states in response to lactose and glucose concentrations.A lactose sensor is the lac repressor. When lactose is present, it ceases to function as a repressor, blocking transcription of the operon in its usual state. Through isomer allolactose, the lac repressor indirectly detects lactose.The CAP serves as a glucose sensor. It starts the operon's transcription, but only when the blood glucose level is low. Through the chemical cAMP, CAP detects glucose in an indirect manner.Learn more about the Lac operon with the help of the given link:
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If a 3. 0 v potential difference causes a 0. 60 a current to flow through a resistor, its resistance is_________.
The resistance is 5 Ω.
Resistance is a degree of the opposition to present day waft in an electrical circuit. Resistance is measured in ohms, symbolized via the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the connection between voltage, modern-day and resistance.
Ohm's regulation states that the voltage or capacity difference among points is without delay proportional to the modern or energy passing through the resistance, and directly proportional to the resistance of the circuit. The system for Ohm's regulation is V=IR.
Potential difference (V) = 3.0 volt
current (I) = 0.60 ampere
V = IR
Resistance (R) = v/I
= 3/0.60
= 5 Ω
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A cosmic-ray electron moves at perpendicular to earth’s magnetic field at an altitude where the field strength is. what is the radius of the circular path the electron follows?
4.266 m is the radius of the circular path the electron follows.
Given
Speed of electron (v) = 7.5 × 10⁶ m/s
Earth's Magnetic Field (B) = 1 × 10⁻⁵ T
We already know that
Mass of electron (m) = 9.1 × 10⁻³¹ kg
Charge on electron (q) = 1.6 × 10⁻¹⁹ C
According to the formula
Radius of circular path(r) = mass on electron × speed/ Charge × Magnetic field
Radius of circular path(r) = m × v/q × B
Put the values into the formula
r = 9.1 × 10⁻³¹ × 7.5 × 10⁶/ 1.6 × 10⁻¹⁹ × 10⁻⁵
On solving, we get
r = 4.266 m
Hence, 4.266 m is the radius of the circular path the electron follows.
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The resistance of a 100-cm wire of cross sectional area 2 × 10-6 m2 is 400 ω. what is the resistivity of the material of this wire?
The resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]
Given:
length,l=100vm or 1m
Area,A
Resistance,R
To find:
resistivity,ρ
ρ = RA/l
[tex] = \frac{400 \times 2 \times 10 {}^{ - 6} }{1} [/tex]
[tex] = 800 \times 10 {}^{ - 4} Ωm[/tex]
Thus,the resistivity comes out to be
Thus,the resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]
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Describe the usefulness or inconvenience of frictional force by turning a door knob.
The cylinder is pulled in the direction of the knob's turn. If the knob is not twisted, a latch at the end of the cylinder that extends into a recess in the doorframe stops the door from being opened.
What is Frictional force ?The opposing force that is produced when two surfaces attempt to move in the same direction or in opposite directions is known as frictional force. A frictional force is primarily intended to produce resistance to the mobility of one surface over another.
Between solid surfaces, there is friction that is static, sliding, and rolling. The three types of friction are ranked from strongest to weakest: rolling, sliding, and static. Fluids experience fluid friction, which is liquid or gaseous.Learn more about Frictional force here:
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Two planets, john and mary, are identical in density and temperature, but mary is larger in size (radius) than john. which planet is likely to have a more substantial atmosphere?
Two planets, john and mary, are identical in density and temperature, but mary is larger in size (radius) than john. Mary will have more substantial atmosphere because mary is larger in size .
A substantial atmosphere is one dense enough to significantly affect the surface
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
The thickness of a planet's atmosphere depends on the planet's gravity and the temperature of the atmosphere. A planet with weaker gravity does not have as strong a hold on the molecules that make up its atmosphere as a planet with stronger gravity.
As the planet grows in size, its mass and therefore gravity increases, allowing it to capture not only the accumulated dust and rocks, but also the gas, which forms an atmosphere.
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The flow of electricity can be compared of water in
The flow of electricity can be compared of water in the pipes because both water and electricity moves in the channel.
How we compare the flow of electricity to water?Water flowing in pipes is like flowing of electricity in a circuit. A battery is like a pump from where electricity comes and moves in the circuit. Electrons flowing through wires are like water molecules flowing through pipes. So in comparison between water and electricity, both water and electricity are similar to each other in flowing and movement.
So we can conclude that the flow of electricity can be compared of water in the pipes because both water and electricity moves in the channel.
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A 24. 0-mw (milli-watts) laser puts out a narrow cylindrical beam 2. 00 mm in diameter. what is the average rms e-field? n/c
A 24. 0-mw (milli-watts) laser puts out a narrow cylindrical beam 2. 00 mm in diameter. The average rms electric field is 2.82N/C.
The Average rms Electric Field is the square root of the mean value of electric field.
Given:
Power of beam = 24mW = 0.024W
Diameter of beam = 2mm = 0.002m
Radius of beam = 1mm = 0.001m
∴ Area Of beam = 22/7 × (radius)²
⇒ Area Of beam = 22/7 × (0.001)²
⇒ Area Of beam = 3.14 m²
∴ Intensity of Beam is the power per unit area where the beam spreads.
Intensity of Beam = Power / Area
⇒ Intensity of Beam = 0.024 / 3.14
⇒ Intensity of Beam = 0.075 W/m²
The average value of RMS for Electric field can be calculated by:
Erms = [tex]\sqrt{Intensity / (speed of light) (permmitivitty of medium)}[/tex]
Erms = 0.075 / 3 × 10⁸ × 8.85 × 10⁻¹²
Erms = 2.82 N/C
Hence, The average value of rms electric field is 2.82N/C
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Knowing that the speed of the flywheel is 300 rpm just before a punching operation, determine the speed immediately after the punching operation?
the speed of flywheel is 300 rpm just before a punching operation,then the speed of the flywheel immediately after the punching operation is 299.93 rpm.
The answer of the above question is as follows:
mass of the flywheel of the punching machine (m) is 300 kg .
radius of gyration of the flywheel is :
[tex]k = 600 mm \times \frac{1m}{100mm} = 6m[/tex]
work to be done against each punching by the wheel (W) is 2500J.
initial angular velocity of the flywheel is:
[tex]w = 300rpm \times \frac{ \frac{\pi}{30} \frac{rad}{s} }{1rpm} = 10 \frac{\pi \: rad}{s} [/tex]
therefore the angular speed of the flywheel immediately after punching is given by
w1 =299.93 rpm
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Disclaimer : the given question is incomplete, thus the complete question is as follows:
Question: The flywheel of a punching machine has a mass of 300 kg mass and a radius of gyration of 600 mm. each punching operation requires 2500 J of work.
(a) knowing that the speed of the flywheel is 300 rpm just before a punching,determine the speed immediately after the punching.
The sahara and australian deserts (among others) are associated with which pressure belt?
The Sahara and Australian deserts (among others) are associated with a sub-trpical high-pressure belt.
This location is for that reason a place of high stress. it's also called the pony range. Winds usually blow from excessive strain to low strain. So the winds from the subtropical region blow towards the Equator as change winds and some other winds blow toward Sub-Polar Low-pressure as Westerlies.
For the duration of the Northern Hemisphere's summer, the oceans are generally cooler in comparison to the warmer continents. In flip, cooler, denser maritime air that overlies the oceans serves to enhance surface pressures, paving the way for quite robust subtropical highs throughout summer.
The subtropical high-pressure belt vicinity is also referred to as the pony range. Those latitudes are characterized via calm winds and little precipitation.
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Diagram A shows two laser beams, one blue and one red, that are incident on a mirrored surface. Diagram B shows two laser beams, one blue and one red, that are incident on a transparent block of glass.
Which statement about the situation shown in these diagrams is CORRECT when light is refracted through the glass and reflected from the mirror?
A
The blue and red laser beams reflect at different angles, and they refract at different angles.
B
The blue and red laser beams reflect at the same angle, and they refract at the same angle.
C
The blue and red laser beams reflect at different angles, and they refract at the same angle.
D
The blue and red laser beams reflect at the same angle, and they refract at different angles.
Diagram A shows two laser beams, one blue and one red, that are incident on a mirrored surface. Diagram B shows two laser beams, one blue and one red, that are incident on a transparent block of glass then The blue and red laser beams reflect at the same angle, and they refract at different angles.
A laser emits a very focused beam of light that can be used in a variety of equipment and technologies. Light Amplification by Stimulated Emission of Radiation is what the letters in the term laser stand for. The word "laser" is an acronym for "Light Amplification by Stimulated Emission of Radiation." In a laser beam, the light waves are "coherent," which means they are all traveling at the same speed and wavelength. To do this, excited electrons are passed through an optical "gain medium," which could be a solid substance like glass or a gas.
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determine the voltage of the diagram in the image
Answer:
total voltage is 9 V is the correct answer of given question
Assuming the earth is a uniform sphere of mass M and radius R, show that the acceleration of free fall at the earth's surface is given by g=GM/R^2
use Newton's gravitational law and 2nd law .....
A skater can spin faster by pulling her arms closer to her body or spin slower by spreading her arms out from her body. This is due to.
A skater can spin faster by pulling her arms closer to her body or spin slower by spreading her arms out from her body due to conservation of angular momentum
What is the principle of conservation of angular momentum?
According to the conservation of angular momentum principle, an object's angular momentum will remain constant until it is affected by an external force. This explains why tucking the arms in close to the torso causes a figure skater to spin more quickly. She has a significant moment of inertia as she starts spinning because more of her mass is farther away from her axis of movement (her body). Her moment of inertia is reduced when she tucks her arms close to her body.Learn more about conservation of angular momentum with the help of the given link:
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What is the surface tension of water? of rubbing alcohol? was your prediction correct or incorrect?
Rubbing water (isopropyl alcohol) has lesser surface tension than that water.
Water possesses a surface tension of 72 dynes/cm.
Whereas rubbing alcohol has a surface tension of 23 dynes/cm.
what is surface tension?Surface tension is the propensity of liquid surfaces at rest to shrink to the smallest possible surface area.
Because the atoms on the outside of the molecules (often hydrogens) lack strong hydrogen bonding capabilities, most organic liquids have very low surface tensions. Because isopropanol contains just 28%, OH and the remainder is CH or CH3, the linkages that hold a droplet together are few and far between.
The only substance with a higher surface tension than water is liquid mercury (450 dyne/cm).
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How much heat in joules will it take to raise the temperature of a 100. 0 g piece of copper from 18°c to 35°c? the specific heat capacity of copper is 0. 385 j ⁄ g · °c
The amount of heat generated is 654.5 joules.
q=mCΔT
Given,
m=100, C=0.385 j ⁄ g · °c, [tex]T_{1} =18^{0}C , T_{2} =35^{0} C[/tex],
q=100*0.385*(35-18)= 654.5 j
HeatHeat is defined as energy that is transferred to or from a thermodynamic system by means other than thermodynamic work or the movement of matter (e.g. conduction, radiation, and friction). Similar to thermodynamic work, heat transfer affects a system's surrounds in addition to the system itself; as a result, it is not a characteristic of the system alone, even while it helps to change the internal energy of the system, which is a property of the system alone. This differs from the common linguistic usage of the word "heat" as a system feature in and of itself. The quantity of energy that is transported as heat in a process is the amount of energy that has been transferred minus any thermodynamic work that has been done and any energy that has been contained in the substance being moved.
How much heat in joules will it take to raise the temperature of a 100. 0 g piece of copper from 18°c to 35°c? the specific heat capacity of copper is 0. 385 j ⁄ g · °c
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Examine Figure 1. During the process of beta decay, which statement correctly compares the parent nucleus and the daughter nucleus?
A
The parent has a different mass number than the daughter.
B
The parent has a different atomic number than the daughter.
C
The parent has the same number of neutrons as the daughter.
D
The parent has the same number of electrons as the daughter.
Beta decay forms a daughter nucleus with a different atomic number than the parent nucleus. The correct answer is option B.
A nucleus loses an electron when it emits the beta particles. The parent and daughter nuclei share the same atomic mass because the mass of an electron is so much less than that of a proton or neutron. The offspring nucleus has an atomic number that is one higher than the parent nucleus.
There are mainly two types of beta decay: beta plus (positron decay) and beta minus (electron decay). The daughter atomic number reduces by one after beta plus decay (the nucleus loses one positive charge) and rises by one after beta minus decay (the nucleus loses one negative charge).
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What does friis free space loss (fsl) tell us about unguided transmission attenuation? fsl=(4πd/λ)2
When we consider unguided wireless communications, we must understand the signal attenuation that occurs between transmit and receive antennas.
The information, or message, that we wish to transmit, is modulated onto a frequency carrier, which is then emitted from a transmit antenna in the form of an electromagnetic (EM) wave.
The signal power (watts) received by the antenna is much less than the transmitted power due to attenuation loss. The Friis equation (also known as the Free Space Loss, FSL equation) describes this attenuation loss.Attenuation, as treated in the Friis equation, is the spreading of power over an ever increasing surface area as it propagates away from the transmit antenna.
We can measure how much power resides in a 1 meter2 area as a function of distance from the isotropic antenna.
Power Density, Pd = Pt/(4πd2)
where the (λ/4πd)2 term is sometimes referred to as the path loss or free space loss. The following definitions are assumed:
Pt - The transmitted signal power.
λ - The wavelength of the carrier (i.e., the center frequency of the radiated signal)
d - The distance between the transmitting and receiving antennas.
We can also place the above equation into decibel format:
FSLdB = [FSL] = 20log10(4πd/l) = 20log10(4π) + 20log10(d) - 20log10(l)
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If you are operating under basicmed, what is the maximum speed at which you may fly?
Answer:
250 kts
Explanation:
is the flight restriction for BasicMed
Select the correct answer from each drop-down menu. complete the sentence to describe the distance and ruler postulates. between every pair of distinct points, there is a positive unique number called the , which can be determined as the of the corresponding real numbers of the two points.
This question is an illustration of the distance postulate.
What is distance postulate ?The distance between any two different points equates to a single positive real integer, according to the postulate of distance.
The full text is: The distance is a positive unique integer between every pair of different locations.
Consider two separate points A and B as an example.
The distance between A and B is the integer that represents the size of A and B.
The positive number (i.e. the distance) between A and B would be:
d= B-A
d = 6 - 1
d = 1
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A proton moving eastward with a velocity of 5. 0 × 103 m/s enters a magnetic field of 0. 20 t pointing northward. what is the magnitude and direction of the force that acts on the proton?
The magnitude of the force is 1.6*10^-16 N. The direction of force is upward.
The definition of force is the push or pull that causes a massed object to change its velocity. Force is an external agent that has the power to alter a body's resting or moving position. It has a direction and a magnitude. The total amount of forces exerted on an object is referred to as the magnitude of force.
The strength of the force increases when all the force is pulling in the same direction. When force is exerted on an item from different angles, the force's strength reduces. The amount that encapsulates the force's strength is known as its magnitude.
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What is the energy (in evev) of a photon of visible light that has a wavelength of 500 nmnm?
_______________
λ=500 nm = 500·10⁻⁹ m
c=3·10⁸ m/s
h=6,63·10⁻³⁴ J·s = 4,14·10⁻¹⁵ eV·s
_______________
E - ?
_______________
[tex]\displaystyle \boldsymbol{E}=h\nu =h \frac{c}{\lambda} =4,14\cdot 10^{-15} \; eV\cdot s\cdot \; \frac{3\cdot 10^8\; m/s}{500\cdot 10^{-9}\; m} =2,484\; eV\approx \boldsymbol{2,5\; eV}[/tex]
Give three examples of objects in equilibrium found in classroom?
Answer:
Book. Bottle. table are some examples of objects in equilibrium found in classroom
Sun has an eective temperature of about 5800 kelvins. What is the peak wavelength emitted by the sun?
By Wien's displacement law we can conclude that, the peak wavelength emitted by the sun for 5800K temperature is 499nm.
To find the answer, we have to know about Wien's distribution law.
How to find the maximum wavelength?The black-body radiation curve for various temperatures will peak at various wavelengths that are inversely proportional to the temperature, according to Wien's displacement law.It is given that, Sun has an active temperature of about 5800 kelvins.Thus, by Wien's distribution law, the maximus wavelength is,[tex]wavelength*T=2.898*10^{-3}mK\\wavelength=\frac{2.898*10^{-3}mK}{5800K}=499nm.[/tex]
Thus, by Wien's displacement law we can conclude that, the peak wavelength emitted by the sun for 5800K temperature is 499nm.
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