A space traveller weighs herself on earth at a location where the acceleration due to gravity is 9.81 m/s29.81 m/s2 and finds a value of 515 n.515 n. what is her mass?

A certain current produces a magnetic field be near the center of the solenoid if the current is 3B .

Thus, the magnetic field in the core of a solenoid is directly proportional to the product of the current flowing around the solenoid and the number of turns per unit length of the solenoid. This, result is exact in the limit in which the length of the solenoid is very much greater than its diameter.

Now,

Magnetic field due to solenoid

B= u0nI

where n is number of turns per unit length and I is current.

Now I is tripled, hence magnetic field

B' =μon 3I =3B.

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For all practical purposes, the capacitor will have nearly all of its voltage discharged after 5-time constants. Although it never completely discharges to 0 volts, a capacitor does come extremely nearby.

A capacitor does not hold charges, if by charges you mean electric charges. This is a typical misunderstanding, maybe as a result of the term charge's various interpretations. A capacitor's terminals exchange an equal amount of charge when a charge is applied to one of them. The capacitor's overall charge is constant. They save it specifically in an electric field. All of the protons are drawn to all of the electrons. On each capacitor plate, the protons and electrons are distributed equally at equilibrium.

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The number of water molecules which are ionized in 1L of pure water at pH 7.0 is equivalent to 6×10¹⁶ molecules.

The number as a percentage of the total water molecules is 1.8×10⁻⁷ % .

At pH 7.0, [H⁺]=10⁻⁷ M, so 10⁻⁷  moles of water molecules have ionized. This is almost equal to (10⁻⁷  mol)(6×10²³ molecules. mol⁻¹) = 6×10¹⁶ molecules.

For the second part of the question let the concentration of water be 55.5 M, then there are (55.5 mol)(6×10²³ molecules.mol⁻¹) = 3.3×10²⁵ molecules of water in 1L. The fraction of ionized molecules is 6×10¹⁶ molecules)/(3.3×10²⁵ molecules) = 1.8×10⁻⁹ or 1.8×10⁻⁷ %.

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A tank is in the shape of an inverted cone, having height h = 3.31 m and base radius r = 0.799 m. of water is poured into the tank at a rate of 11.8 m/s.

It take to fill the tank

Using the similarity of triangles,

[tex]\frac{0.799}{r} =\frac{3.31}{h} \\r=0.241h[/tex]

Volume of water tank

[tex]V=\frac{1}{3} \pi r^2h\\V=\frac{1}{3} \times 3.14\times (0.241h)^2\times h\\V=0.0608h^3[/tex]

The 10 push-ups must Jaycie complete to do 200 J of work. If one push-up is applying a force of 10 N to raise her center of gravity 2 m.

As, we know that

W = F × S

where,

F is the force

W is the work done by the body

S is the distance travelled by the body

Given,

F = 10N

S = 2m

By substituting all the values, we get

W = 10 × 2

W = 20J

So, the 20J work is done by one push up.

Therefore,

200/20

= 10 push ups

Thus, we concluded that the 10 push-ups must Jaycie complete to do 200 J of work. If one push-up is applying a force of 10 N to raise her center of gravity 2 m.

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Hypothesis: If I lower the amount of prey, then the frog population would lower, because the frogs would not have any food and then they would die.

Mark me brainliest. :)

According to Archimedes' principle, (a) the submerged volume is 1 liter and (b) the density of object is 1102 kg/m³.

We need to know about Archimedes' principle to solve this problem. Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid is proportional to the volume and density of the fluid. It can be determined as

Fb = ρ . g . V

where Fb is buoyant force, ρ is the density of the fluid, g is the gravitational acceleration (9.8 m/s²) and V is submerged volume.

The buoyant force also can be calculated by measuring the change in weight in air and water

Fb = Wa - Ww

where Wa is weight in air and Ww is weight in water.

From the question above, we know that

Wa = 10.8 N

Ww = 1 N

ρ = 1000 kg/m³

Find the buoyant force

Fb = Wa - Ww

Fb = 10.8 - 1

Fb = 9.8 N

Determine the submerged volume

Fb = ρ . g . V

9.8 = 1000 . 9.8 . V

V = 1/1000 m³

V = 1 dm³ = 1 liter

Determine the density of the object

Wa = m . g

10.8 = m . 9.8

m = 1.102 kg

ρ = m/V

ρ = 1.102 / 1

ρ = 1.102 kg / liter

ρ = 1102 kg/m³

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The resultant velocity of the parachute is 3.4 m/s.

The term resultant velocity refers to the effective velocity  with which the parachute moves. We know that velocity is a vector quantity. Recall that a vector is known to have both magnitude and direction.

Given that the magnitude of the resultant vector can only be obtained geometrically we have;

Vertical component =   3.0 m/s

Horizontal component = 1.6 m/s

Resultant velocity = √(3)^2 + (1.6)^2

= 3.4 m/s

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The density of sugar, which is in 1.58 g/cm³, is equivalent to 0.05708 in/in³.

Density is a measure of the mass of matter contained by a unit volume.

Density is a function of mass and density, hence, it is measured in units of grams (g) and cubic centimeters (cm³).

However, cubic centimeters can be converted to pounds per cubic inch as follows:

1 gram / cubic centimetre = 0.0361 pound / cubic inch

According to this question, the density of sugar is 1.58 g/cm³. This value is equivalent to;

= 1.58 × 0.0361 = 0.05708

Therefore, the density of sugar, which is in 1.58 g/cm³, is equivalent to 0.05708 in/in³.

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The net force is 46 N to the left.

We need to know about force resultant to solve this problem. The force resultant is the total net force applied to the object according to the direction. It can be written as

R = F1 + F2 + ... + Fn

where R is force resultant (net force)

From the question above, we know that

(Assume that the right direction is positive and left direction is negative)

F1 = -175 N

F2 = 234 N

F3 = 75 N

F4 = -225 N

F5 = 45 N

By substituting the following parameters, we can calculate the net force

R = F1 + F2 + F3 + F4 + F5

R = -175 + 234 + 75 - 225 + 45

R = -46 N

Hence, the net force is -46 N

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During stage 3 of star formation, the dense, opaque region at the center of the cloud is named a:Herbig-Haro object.

Bright nebulosity patches known as Herbig-Haro (HH) objects are linked to young stars. They are created when fast-moving, nearby clouds of gas and dust meet with narrow jets of partly ionized gas released by stars. Typical Herbig-Haro objects can contain up to 20 Earth masses of material and have temperatures of about 10,000 Kelvin.

They also have densities of a few thousand to a few hundred thousand particles per cubic centimeter. Over 600 have been discovered so far, all in star-forming regions and typically connected to Bok globules. They were once extremely rare. A brilliant cloud that stretches away from a star in the process of formation is known as a Herbig-Haro object (or HH object). The gravitational agglomeration of clouds produces protos tars.

Hence, During stage 3 of star formation, the dense, opaque region at the center of the cloud is named a:Herbig-Haro object.

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Gold fillings, also called inlays or onlays, consist of alloys of gold, copper, and other metals. This type of filling is usually the most durable and is considered to last 20 years or more, but it is also the most expensive.

Gold fillings are less common than they used to be, but are still a viable option for obtaining fillings. Gold is durable and resilient, so with proper care, gold fillings can last a lifetime.

Gold is one of the oldest tooth restoration solutions in dentistry and is still used today due to its durability. Gold crowns are rarely used in modern dentistry (except for aesthetic reasons), but gold components are used in combination with other metals such as nickel, chromium, and palladium.

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You need to do the necessary calculations and check how they can be ranked.

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Answer: 30.3 seconds

Explanation:

1000 m=1 km

33m * 1 km/1000 m=

33 * 1/1000=

33/1000=0.033 km

1/0.033=30.3030...

30.3030=30.3 seconds

Aristarchus measured the angle between the sun and the moon when exactly half of the moon was illuminated, he found this angle to be 90 degree.

The Moon exhibits a circular motion around the Earth as well as the relative position occupied by the sun, the earth, and the moon results in the creation of the lunar phases.

Aristarchus realized the fact that the Moon was exactly half illuminated as it forms a right triangle with the Sun and the Earth. As by knowing the distance occupied between the Earth and the Moon, the one and only thing he needed was the angle that existed between the Moon and Sun to compute the distance of the Sun itself at that present moment

In this case, whenever the Sun is illuminating half of the Moon, the angle between the sun and the moon must be at 90°. Actually, this angle changes according to the movement of the moon as there it will be zero degrees for the new moon as well as 180° for the full moon.

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In order to quadruple the amount of lift created by an airfoil, the air velocity must be doubled.

What is airfoil?

A wing, a sail, or the blades of a propeller, rotor, or turbine are examples of objects whose motion through a gas can provide significant lift, and an airfoil or aerofoil is the cross-sectional shape of such an item.

By applying a downward push to the air as it passes, an airfoil produces lift. The air must exert an equal and opposite (upward) force on the airfoil, which produces lift, in accordance with Newton's third law.

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Answer:

CO2 and H2O

Explanation:

Moving from the element with atomic number 10 to atomic number 11 on the periodic table changes observed are :

Reactivity increases,

Sodium has more shell,

Valence electrons in sodium are farther from the nucleus,

Atomic number 11 does not have a full electron shell

In increasing order of atomic number, the elements are listed. The amount of protons in an atom's nucleus is indicated by its atomic number. An element's identity is determined by its proton count. The number of protons determines an element's identity.

The indirect relativistic effect amplifies the decreases in the binding energies of the valence d and f electrons as they move down the periodic table. As a result, the d electrons in the heavier coinage metals become more chemically active, leading to higher oxidation states in these elements.

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The missing value of medium Air, glass, brass, Wave speed m/s 346, 5,640, 4,700, Frequency Hz 55, 55, 55, and Wavelength m 6.3, 102, is 85.

The frequency of a sound wave is what your ear understands as pitch. A better frequency sound has a better pitch, and a lower frequency sound has a decreased pitch. There are five essential traits of sound waves wavelength, amplitude, frequency, time period, and speed. The wavelength of a legitimate wave shows the gap that the wave travels earlier than it repeats itself. The wavelength itself is a longitudinal wave that shows the compressions and rarefactions of the sound wave.

Sound waves may be defined by way of five traits Wavelength, Amplitude, Time-period, Frequency, and pace or velocity. The minimum distance in which a sound wave repeats itself is known as its wavelength. that is it is the duration of one complete wave. Pitch. The musical term for frequency is pitch. The better the frequency, the better the pitch. the velocity of sound, the velocity at which sound waves propagate thru exclusive substances. the modern fee for the velocity of sound is 331.29 meters 1,086.nine toes in keeping with a second.

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The balance of star's equilibrium is essentially brought about by two forces. These forces are the star's inner gravitational pull and the thermal energy produced by fusion processes' outward pressure push. These two forces prevent a star's collapse and constantly maintain a star in equilibrium.

A star's equilibrium with respect to gravity is governed by two forces. These two forces are distinguished as the star's gravity and its outward pressure push, respectively. It is a self-regulating and stable process that keeps the stars in this equilibrium.

star's equilibrium is the term used to describe this state of the stars. The fusion events occurring in a star's core produce an outward pressure force.

From the high-pressure core to the low-pressure surface, which is balanced by inward gravity, is the direction of pressure force in stars.

A star will experience a rise in internal gravity if we add more matter to it, which is again counterbalanced by internal pressure to maintain the star stable.

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The distribution coefficient was found to be 1.61.

First we calculate solubility of caffeine, when dissolved in methylene chloride,

Solubility (in g/ml) = mass of caffeine/volume of solvent

Solubility = 1/28

Now, solubility of caffiene when dissolved in water,

Solubility (in g/mol) = 1/46

Now, we calculate distribution coefficient, (kd) by taking the ratio of the solublities i.e..

Distribution coefficient,(Kd) = solubility of caffeine, when dissolved in methylene chloride / solubility of caffeine when dissolved in water.

Kd= (1/28) / (1/46)

Kd= 1.61

Thus, distribution coefficient was calculated and found to be 1.61.

The distribution coefficient of the solute is defined as the ratio of the concentration of solute dissolved in organic solvent to the concentration of solute dissolved in aqueous phase.

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Atomic electron arrangement is the only factor that affects how they behave chemically.

The electron arrangement is independent of whether an atom contains three or four neutrons. All that matters is how many protons there are and how many electrons there are to match them, which determines how these atoms will behave chemically. When grouping atoms in the periodic table, we designated a box as an element when all of the atoms have the same number of protons (with a corresponding symbol) Thus, the sole difference between the various forms of an element is its number of neutrons; we refer to these forms as the element's isotopes. Both lithium-6 and lithium-7 have three protons and three neutrons.

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The calculated pressure is 55 KPa.

The amount of force delivered perpendicularly to an object's surface in relation to its area is known as pressure. Its abbreviation is "p" or "P." An isochoric process in thermodynamics is a thermodynamic process in which the volume of the closed system experiencing the process remains constant. It is also known as a constant-volume process, isovolumetric process, or isometric process.

At the triple point of water, a constant volume gas thermometer registers a pressure of P tr = 40 kPa= 40 *10³ Pa.

Water's boiling point is T=100°C=373.16K.

Let P represent the pressure at the water's boiling point.

The temperature pressure relation for a constant volume gas thermometer is provided below:

T= P/ Ptr *273.16K

P= 273.16 TP tr

= 273.16 /373.16*40*10³

=54620Pa

=5.42*10³ Pa ≅ 55 KPa

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The metal with a mass of 27.0 g and a volume of 10.0 cm3 has a density of: 2.70 g/cm3

The density formula and the procedure we will use is:

d = m/v

Where:

Information about the problem:

Applying the density formula, we get:

d = m/v

d = 27.0 g/ 10.0 cm3

d = 2.70 g/cm3

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

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Answer:

1st box: 2

2nd box: 1

3rd box: 4

4th box: 3

Explanation:

Kinetic energy the energy an object has due to its being in motion.  Potential energy is energy held by an object because of its position relative to another object.

Answer:

action and reaction forces

Explanation:

An motion pressure is a pressure that is utilized to an object. A response pressure is a outcome of an action force which is opposite in direction.

Answer:

31.38 s (2 d.p.)

Explanation:

Constant Acceleration Equations (SUVAT)

[tex]\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}[/tex]  

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

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To find the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor, we to accelerate to the maximum allowed velocity as quickly as possible, maintain the maximum velocity for as long as possible, and then decelerate for the shortest period of time in order for the elevator to come to a stop after 373 m.

Therefore, the travel time from the start of the elevator trip to the end will have three phases:

Given information:

The time it takes to accelerate from rest to the maximum allowed velocity, where the elevator accelerates at the maximum allowed acceleration:

[tex]\begin{aligned}v & = u+at\\\implies 14.3 & = 0+2.7t\\t & = \dfrac{14.3}{2.7}\\t & = 5.296296296\;\sf s\end{aligned}[/tex]

The distance covered in this time is:

[tex]\begin{aligned}v^2 & = u^2 + 2as\\\implies 14.3^2 & = 0^2 + 2(2.7)s\\204.49 & =5.4s\\s & = \dfrac{204.49}{5.4}\\s & = 37.86851852\; \sf m\end{aligned}[/tex]

Given information:

When the elevator is decelerating from the maximum velocity to being at rest, it will take the same amount of time and cover the same distance as its acceleration phase:

[tex]\begin{aligned}v & = u+at\\\implies 0& = 14.3+(-2.7)t\\2.7t&=14.3\\t & = \dfrac{14.3}{2.7}\\t & = 5.296296296\;\sf s\end{aligned}[/tex]

[tex]\begin{aligned}v^2 & = u^2 + 2as\\\implies 0^2 & = 14.3^2 + 2(-2.7)s\\0 & = 204.49 -5.4s\\5.4s&=204.49\\s & = \dfrac{204.49}{5.4}\\s & = 37.86851852\; \sf m\end{aligned}[/tex]

The total distance the elevator travels is 373 m.  

Therefore, the distance it travels during phase 2 when it is traveling at a constant (maximum) velocity is the total distance less the distance traveled in phases 1 and 3:

[tex]\begin{aligned}\implies s & =373-2(37.86851852)\\s& = 297.262963\;\sf m\end{aligned}[/tex]

Given information:

Therefore, the time is takes to travel this distance when it is traveling at a constant (maximum) velocity is:

[tex]\begin{aligned}s&=\left(\dfrac{u+v}{2}\right)t\\\implies 297.262963 & = \left(\dfrac{14.3+14.3}{2}\right)t\\297.262963 & = 14.3t\\t & = \dfrac{297.262963}{14.3}\\t & = 20.78761979 \; \sf s\\\end{aligned}[/tex]

Therefore, the minimum time is the sum of the time calculated for the three phases:

[tex]\begin{aligned}\sf Minimum \: time& = \sf Phase \: 1 + Phase \: 2 + Phase \: 3\\& = 5.296296...+5.296296...+20.78761...\\& = 31.38021...\\& = 31.38\; \sf s\end{aligned}[/tex]

The magnitude of the net force causing the car to slow down is 6900 N.

We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

m = 2300 kg

a = 3 m/s²

By substituting the given parameters, we can calculate the net force

F = m . a

F = 2300 . 3

F = 6900 N

Hence, the net force causing to slowdown is 6900 N

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A. A constant acceleration means that the speed of the object is constant.

Constant acceleration is defined as a change in velocity that does not vary over time.

During constant acceleration of an object, the change in velocity of the object with time is the same or constant for all points of the object's motion.

a = Δv/Δt

where;

During constant acceleration, the variable change in velocity (Δv) will be constant with change in time.

Thus, a constant acceleration means that the speed of the object is constant.

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Unlike the consecutive numeric storage method, which uses each digit as an indexing unit, the terminal-digit numeric storage method divides a number into three groups of digits.

What does terminal-digit numeric storage mean?

The fundamental numeric method might not be practical, so a different option is to use terminal-digit filing, which separates a number into three groups of digits. The goal is to denote primary (first), secondary, and tertiary (final) groupings of numbers.  These primary, secondary, and tertiary numbers tell the location of the record.

What does consecutive numeric storage mean?

Each digit serves as an indexing unit in the consecutive storage method, also known as serial or straight number filing. To determine  filing order, a number's first digits are compared. Following a comparison of the first two digits, the third digits are evaluated, and so on. The numbers used may be written on the record or may be a component of the record itself, such as a number on an invoice. As each new record is added to the system, the number assigned to it increases.

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