A man weighing 490N on earth weighs 81.7N on the moon.His mass on the moon is kg

Answer:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever

Explanation:

Answer:

the anwser is atp

Explanation:

To move substances against a concentration or an electrochemical gradient the cell must use energy. This energy is harvested from ATP that is generated through cellular metabolism. Active transport mechanisms, collectively called pumps or carrier proteins work against electrochemical gradients.

The energy for passive transport comes from the gradient itself, in which transfer of a solute from high electrochemical potential to low take place.

The passive transport is the shifting or transfer of a solute from a place where the electrochemical potential is high to a place where the electrochemical potential is low.

Energy require for passive transport-

Thus, the energy for passive transport comes from the gradient itself, in which transfer of a solute from high electrochemical potential to low take place.

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Materials required for the experiment of limiting force borne by string:-

Steps of procedure for for the experiment of limiting force borne by string:-

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The force which counteracts the thrust force for the flight is known as the drag force, as it opposes the flow.

Drag is a force that opposes an object's relative motion to a fluid environment in the field of fluid dynamics. It may be among two liquid film (or surfaces) or in between a liquid and a flat wall. The drag force is influenced by velocity, as opposed to other resistive forces like dry contact, which are essentially independent of it.

When a flow is moving at low or high speed, the drag force is equal to the speed for low pressure and to the square of the velocity for high-speed flow. Although viscous friction is what ultimately causes drag, turbulent drag is unaffected by viscosity.

A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a push or a pull can also be used to describe forces.

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The drag force, which resists the flow, is the force that balances the propulsion force for flight.

In the study of fluid dynamics, drag is a force that opposes an object's relative motion to a fluid environment. It could be situated between two liquid surfaces (or films) or between a liquid and a flat wall.

Unlike other resistive forces like dry contact, which are largely independent of velocity, the drag force is affected by it.

For low pressure and high speed flows, respectively, the drag force is equal to the speed for low pressure and the square of the velocity. Although drag is ultimately caused by viscous friction, turbulent.

Thus, The drag force, which resists the flow, is the force that balances the propulsion force for flight.

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The wavelength of the radio wave is approximately 3.43 meters.

To find the wavelength (λ) of a radio wave, we can use the equation:

λ = c / f

where λ is the wavelength, c is the speed of light (approximately 3.00 × 10^8 m/s), and f is the frequency of the radio wave.

In this case, the frequency is given as 87.5 MHz. To convert it to Hz, we need to multiply it by 10^6:

f = 87.5 MHz × 10^6 = 87.5 × 10^6 Hz

Now we can calculate the wavelength:

λ = c / f = (3.00 × 10^8 m/s) / (87.5 × 10^6 Hz) = 3.43 meters

Therefore, the wavelength of the radio wave is approximately 3.43 meters.

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An atom with great electronegativity is able to attract electrons towards itself in a chemical bond. This means that it is able to form strong covalent bonds with other atoms, and can also participate in ionic bonding by attracting electrons away from other atoms.

Additionally, an atom with high electronegativity is able to exert a greater degree of control over the distribution of charge within a molecule, making it an important factor in determining the overall reactivity and behavior of the molecule.

Electronegativity is a measure of an atom's ability to attract electrons towards itself when it is part of a chemical bond. In other words, it is a measure of an atom's ability to pull electrons away from other atoms in a molecule. Electronegativity is an important concept in chemistry, as it helps predict how atoms will behave in chemical reactions.

Electronegativity is typically measured on a scale called the Pauling scale, named after the American chemist Linus Pauling. The scale ranges from 0.7 (for the least electronegative element, francium) to 4.0 (for the most electronegative element, fluorine). Elements towards the right side of the periodic table, such as the halogens and oxygen, are generally more electronegative than elements towards the left side, such as the alkali metals.

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I cant see the numbers but to find them heres an example 17 n would be at the top next to 15 and 20 if there on there and them you find the other number 105 w I think would be on the left then draw a straight line till they touch and wherever it is will be you answer and if you need further help search it up on here or google

Explanation:

ok so start on the latitude which is the lines that go left to right. it would be the first number in the parentheses.(latitude,longitude) so if the number is 17°North you would look on the right side of the map and find 17°N. It might show y 15°N so you have to try and find where you think 17°N would be. place you finger where you think 17°N is. then find 105°West which is longitude and is the lines that go up and down. and drag you fingers together in a straight line until they both meet and that is where the awnser is.

hope u understand

The magnitude of the force between the two parallel wires can be calculated using the formula:

F = μ0 * I1 * I2 * L / (2πd)

Where F is the force, μ0 is the permeability of free space (4π x 10^-7 Tm/A), I1 and I2 are the currents in the two wires, L is the length of the wires, and d is the distance between the wires.

Plugging in the given values, we get:

F = (4π x 10^-7 Tm/A) * 35 A * 35 A * 35 m / (2π * 0.04 m)

F = 0.61 N

The direction of the force can be determined using the right-hand rule. If the current in the first wire is flowing from south to north, and the current in the second wire is also flowing from south to north, then the force between the wires will be attractive, and will act towards the center of the wires.



The force between two parallel wires carrying current is due to the interaction of the magnetic fields produced by the currents. The magnetic field around a current-carrying wire is circular, and the direction of the field depends on the direction of the current. When two wires are placed parallel to each other, the magnetic fields around them interact and produce a force between the wires.

The force is proportional to the currents in the wires, the length of the wires, and inversely proportional to the distance between the wires. The direction of the force can be determined using the right-hand rule, which states that if the thumb of the right hand points in the direction of the current in the first wire, and the fingers point in the direction of the current in the second wire, then the palm of the hand will indicate the direction of the force. If the force is attractive, it will act towards the center of the wires, and if it is repulsive, it will act away from the center.

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Resolving power refers to the ability of a lens to distinguish between two closely spaced objects. It is determined by the wavelength of light and the numerical aperture of the lens.

Magnifying power, on the other hand, refers to the ability of a lens to enlarge the size of an object. It is determined by the focal length of the lens.
The term "parfocal" refers to a type of lens system where multiple lenses have the same focal point when the focus is adjusted. This means that when switching between different lenses, the focus remains the same, making it easier for the user to switch between lenses without losing focus.
Differentiating between the resolving power and magnifying power of a lens involves understanding their respective functions. Resolving power refers to the ability of a lens to distinguish between two closely spaced objects, or in other words, the clarity with which the lens can produce an image. Magnifying power, on the other hand, refers to the degree to which a lens can enlarge the image of an object.

The term "parfocal" is used to describe a set of lenses that, when interchanged on a microscope or other optical instrument, maintain their focus on the same object. This means that when you switch from one parfocal lens to another, only minimal adjustments to the focus are needed, allowing for a seamless transition between lenses with different magnifying powers.

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Resolving Power: It is the ability of a lens to separate or distinguish between closely spaced objects, reflecting the detail that can be seen with the lens.

Magnifying Power: It denotes how much larger an object appears through a lens compared to its actual size. High magnification doesn't necessarily mean better image quality.

Parfocal: This term refers to lenses that remain in focus even when the magnification or focal length changes. It enables swift adjustments in magnification without needing constant refocusing.

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Answer:

7.7 × 10^-10 N

Explanation:

To calculate the magnetic force on the airplane, we need to use the formula:

F = qvBsinθ

where:

F = magnetic force

q = net charge

v = velocity of the airplane

B = strength of the magnetic field

θ = angle between the velocity and magnetic field

In this case, the net charge is given as 1540 μc, which we can convert to Coulombs:

q = 1540 μC = 1.54 × 10^-6 C

The velocity of the airplane is given as 100 m/s, and the strength of the Earth's magnetic field is 5.0 × 10^-5 T. However, we also need to know the angle between the velocity and magnetic field. If the airplane is moving perpendicular to the magnetic field, then θ = 90°, which means that sinθ = 1.

Now we can plug in the values and calculate the magnetic force:

F = qvBsinθ

F = (1.54 × 10^-6 C)(100 m/s)(5.0 × 10^-5 T)(1)

F = 7.7 × 10^-10 N

Therefore, the magnetic force on the airplane is 7.7 × 10^-10 N.

*IG:whis.sama_ent

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Values calculated are as : ω is 3160 rad/sec; R is 175 ohm;  Imax= 0.143 A  and t= 0.000331 sec.

An LRC circuit is also known as a tuned circuit, or an RLC circuit It is an electrical circuit consisting of an inductor (L), capacitor (C), and resistor (R) connected in series or parallel.

= √//( 8 *10^-3 * 12.5 * 10^-60

= 3160 rad/sec.

2. Impedance:

Z= √R² + (XL - Xc)²=

= √R²

= 175 ohm

3. Imax= V/Z

= 25/175

= 0.143 A

I = Imax cosωt

Imax/2= I max cosωt

cosωt= 1/2

t = 0.000331

v= Vcosωt= 12.5 V

VR = IRcosωt= 12.5 V

voltage across the capacito

Vc = IXc Cos(ωt - π/2)

= 3.13 V

voltage across the inductor

VL=  IXL Cos(ωt + π/2)

= -3.13V

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: An L-R-C series circuit is constructed using a 175Ω resistor, a 12.5μF capacitor, and an 8.00-mH inductor, all connected across an ac source having a variable frequency and a voltage amplitude of 25.0 V.

1-At what angular frequency will the impedance be smallest?

2-What is the impedance at this frequency?

3-At the angular frequency in part A, what is the maximum current through the inductor?

4-At the angular frequency in part A, find the potential difference across the ac source, the resistor, the capacitor, and the inductor at the instant that the current is equal to one-half its greatest positive value.

Answer:

The density of  putty 2 g/cm³

Explanation:

Given:

V₀ = 25 ml = 25 cm³

V = 29 ml = 29 cm³

m = 8 g

______________

ρ - ?

The density of  putty:

ρ = m / (V - V₀)

ρ = 8 / (29 - 25) = 8 / 4 = 2 g/cm³

Answer:

Part A

The sound intensity at the location 150 from the firework = 4.3\(\overline 5\) W/m²

Part B

The power the firework is emitting is approximately 1,231.5 kW

Explanation:

Part A

The data of the firework sound heard by the two friends are;

Let 'A' represent the location of the friend at a point 150 m from the fireworks and let 'B' represent the location of the friend watching from a distance of 700 m from the firework

The distance of 'A' from the sound, r₁ = 150 m

The distance of 'B' from the sound, r₂ = 700 m

The intensity at which 'B' hears the sound, I₂ = 0.2 W/m²

The relationship between sound intensity and distance is given as follows;

\(\dfrac{I_2}{I_1} = \left (\dfrac{r_1}{r_2} \right )^2\)

\(\therefore {I_1} = \dfrac{I_2}{ \left (\dfrac{r_1}{r_2} \right )^2} = I_2 \times \left (\dfrac{r_2}{r_1} \right )^2\)

Plugging in the values gives;

\(\therefore {I_1} = 0.2 \times \left (\dfrac{700}{150} \right )^2 = \dfrac{196}{45} = 4.3\overline 5\)

The sound intensity at location 'A', I₁ = 4.3\(\overline 5\) W/m²

Part B

The relationship between power, 'P', and intensity, 'I', is presented as follows;

\(I = \dfrac{P}{4 \cdot \pi \cdot r^2}\)

P = I·4·π·r² = 4·I·π·r²

Therefore, at point 'A', where the distance, r₁ = 150 m, and the intensity, I₁ = 4.3\(\overline 5\) W/m², we have;

P = 4 × 4.3\(\overline 5\) W/m² × π × (150 m)² = 1231504.32021 W

The power the firework is emitting, P ≈ 1,231.5 kW.

Answer:

423 is the answer

I don't know the real. answer

Answer:

a=14m/s^2

Explanation:

F=ma

42N=3kg*a

a=14m/s^2

The magnitude and direction of the velocity of these skaters just after their collison is 0 m/s.

A collision between two objects that stick together is an inelastic collision. When two skaters collide and grab on to each other on frictionless ice, they stick together, and their combined mass becomes (70.0 kg + 65.0 kg) = 135.0 kg. The total momentum of the two skaters before the collision is:m1v1 + m2v2 = (70.0 kg) (4.00 m/s) + (65.0 kg) (-2.50 m/s) = 280 kg m/s - 162.5 kg m/s = 117.5 kg m/s

Since the two skaters stick together and move as one unit after the collision, their total momentum remains the same, which means the velocity of the combined skaters just after the collision is:v = m1v1 + m2v2 / (m1 + m2)= (117.5 kg m/s) / (135.0 kg)= 0.87 m/s. The direction of the velocity is to the right because the skater with the larger mass (70.0 kg) was initially moving to the right.

However, the question asks for the magnitude and direction of the velocity of the skaters, not the combined momentum, which is why the answer is 0 m/s. The skaters come to a complete stop after the collision, and their velocity is 0 m/s.

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Answer:

sorry I don't understand

Explanation:

please translate it in english

Answer:

Data from a cross-sectional study or survey might need to incorporate weights or design effects in the analysis.The analysis plan should specify which variables are most

Explanation:

Explanation:

For example, scientists on a ship may examine SONAR data collected in real-time to determine the shape of the seafloor (Fig 2.7 A). ... Biologists might graph the number of box jellyfish over time and compare these data to the phases of the moon to look for patterns (Fig 2.7 B).

A trough on a transverse wave is to a rarefaction in a longitudinal wave.
In a transverse wave, the particles move perpendicular to the direction of the wave's motion. A crest is the highest point of the wave, while a trough is the lowest point.
In a longitudinal wave, the particles move parallel to the direction of the wave's motion. A compression is a region where particles are closely packed together, and a rarefaction is a region where particles are more spread out.
When comparing the two types of waves, a crest in a transverse wave corresponds to a compression in a longitudinal wave due to the increased particle density at that point.
Similarly, a trough in a transverse wave corresponds to a rarefaction in a longitudinal wave since the particles are less densely packed at that point.

So, the correct answer is B) a rarefaction.

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Answer:

900 cm/s or 9 m/s.

Explanation:

Data obtained from the question include the following:

Length (L) = 30 cm

frequency (f) = 60 Hz

Velocity (v) =.?

Next, we shall determine the wavelength (λ).

This is illustrated below:

Since the wave have 4 node, the wavelength of the wave will be:

λ = 2L/4

Length (L) = 30 cm

wavelength (λ) =.?

λ = 2L/4

λ = 2×30/4

λ = 60/4

λ = 15 cm

Therefore, the wavelength (λ) is 15 cm

Now, we can obtain the speed of the wave as follow:

wavelength (λ) = 15 cm

frequency (f) = 60 Hz

Velocity (v) =.?

v = λf

v = 15 × 60

v = 900 cm/s

Thus, converting 900 cm/s to m/s

We have:

100 cm/s = 1 m/s

900 cm/s = 900/100 = 9 m/s

Therefore, the speed of the wave is 900 cm/s or 9 m/s.

Answer:

12,000,000 boxes

Explanation:

the volume of the room can be found by using the equation for volume of a rectangular box:V=LxWxH

where:

L=2m

W=3m

H=4m

(it doesn't really matter which is which since it is multiplication)

when we multiply our values (2m*3m*4m) we get 24cubic meters

now we need to convert cubic meters to cubic centimeters

each cubic meter is 1,000,000 cubic centimeter we multiply 24 by 1,000,000 and we get: 24,000,000 cubic centimeters (cc)

dividing 24,000,000 by 2 (since each box is 2cc) we get 12,000,000

so, we know we can fit 12,000,000, 2 cubic centimeter boxes in this room

Irina of mass 110 kg floats in fresh water, the volume is 0.06m³.

The buoyant force is the upward force exerted on any object by the fluid. If the buoyant force is lesser than the object's weight, the object will sink while if buoyant force is greater than the object's weight it will float.

In the question irina of mass 110 kg floats in fresh water that indicates:

weight of irina = buoyant force

mg = Vρg

m =  Vρ

Where, m = mass of irina

V = volume

ρ = density of water

110 = V × 1000

V = \(\frac{110}{1000}\)

V = 0.11m³

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Kim's policy remained in force for a certain number of days even though she forgot to pay the premium. the provision that allows this is called grace period provision

If the policyowner fails to make the premium payments due to some issue or reason, the insurance company will not immediately cancel the policy , whereas the company will wait for few days if no action seen than only they will take action on that account .

The grace period provision allots a specifically designated amount of time in which the policyowner has to make the required premium payments after the stipulated due date.

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Answer:

4 times what it is now.

Explanation:

g=G(M/r^2)

G is constant, so ignore.

We have (1M/0.5r^2), or 4.

Answer:

4g

Explanation:

the equation of g (field gravity)

g = G M/R²

because G (Contant of Gravitasion) and M (Mass of earth) same, them

g2/g1 = R1²/R2²

g1 = g now

g2 = g which the value we looking for

g2/g = 1/(1/2)²

g2/g = 1/(1/4)

g2/g = 4

g2 = 4g

If you plug an electric toaster rated at 110V into a 220V outlet, the current drawn by the toaster will increase significantly. This is due to Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor.

The toaster is designed to operate at 110V, which means its internal components, such as the heating elements, are designed to handle that voltage. When it is plugged into a 220V outlet, the voltage across the toaster doubles. As a result, the current drawn by the toaster will also double, assuming the resistance of the toaster remains constant.

Since the power consumed by the toaster is the product of voltage and current (P = VI), doubling the voltage while maintaining the same resistance will result in double the power consumption. This increase in power can cause the heating elements to overheat and potentially burn out or cause damage to the toaster.

Therefore, it is crucial to match the rated voltage of electrical appliances with the voltage supplied by the outlet to prevent potential damage or hazards.

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Adjusting barometer readings to sea level removes the influence of altitude on air pressure. Air pressure decreases as altitude increases. This is because the weight of the air above decreases with higher elevation.

Air pressure decreases as altitude increases. This is because the weight of the air above decreases with higher elevation. When measuring air pressure using a barometer, the reading will reflect the atmospheric pressure at the location of the measurement. However, to make meaningful comparisons between different locations, it is necessary to remove the influence of altitude.

To remove the influence of altitude on air pressure, barometer readings are adjusted to sea level. This adjustment is known as "reducing" or "correcting" the barometer readings to sea level. By doing so, the adjusted readings provide an indication of the air pressure that would exist if the measurement were taken at sea level, regardless of the actual altitude of the measurement location.

Adjusting barometer readings to sea level allows for consistent comparisons of air pressure between different locations, irrespective of their altitudes. It provides a standardized reference point and removes the variable of altitude, enabling meteorologists and scientists to analyze and interpret atmospheric pressure data in a consistent manner across various locations.

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Answer:

\(F_{g} = 4.8\) × \(10^{-7}\) \(N\)

Explanation:

The law of gravitational attraction states :

\(F_{g} = G\frac{Mm}{R^{2} }\)

G is the gravitational constant \((6.67\) × \(10^{-11}\)\()\)

M is the larger mass (kg)

m is the smaller mass (kg)

R is the distance separating the two objects (\(m^{2}\))

∴ \(F_{g} =\) \((6.67\) × \(10^{-11}\)\()\)  \((4000)(180)/(10)^{2}\)

\(F_{g} = 4.8\) × \(10^{-7}\) \(N\) is the gravitational force between the elephant and the lion.

The period of the asteroid in terms of earth years would be approximately 18.25 years. This is calculated by taking the period of the Earth's orbit around the Sun (1 year) and multiplying it by 4.5.

Earth is the third planet from the Sun and the only object in the universe known to harbor life. It is the fifth largest planet in the Solar System and is the densest and most massive of the terrestrial planets. Earth is composed of numerous physical and chemical components, including an atmosphere and hydrosphere which help to regulate its climate and weather patterns.  It also has numerous ecosystems, with millions of species of plants and animals that depend on each other for survival. Earth's lithosphere is composed of numerous tectonic plates that move and interact, creating earthquakes and volcanoes.

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Answer: FUNDAMENTAL unit are the accepted standard units while DERIVED units are developed from combinations of fundamental units.

Explanation:

FUNDAMENTAL UNITS are the generally accepted units which includes the following with their symbols in international system of units:

--> length (meter) m

--> mass (kilogram) kg

--> time( second) s

--> temperature (Kelvin) k

--> current (ampere) A

--> luminous intensity ( Candela) cad

--> amount of substance ( mole) mol

DERIVED UNITS are usually developed from fundamental units and they include the following with their symbols in international system of units:

--> Area ( m²)

--> Volume (m³)

--> Speed ( m/s)

--> Velocity ( m/s)

--> Acceleration ( m/s²)

--> Force ( kgm/s²)

--> Density ( kgm/s³)

--> Power ( J/ s)

--> Pressure ( N/m²)