How do you decide which machine to choose for a particular task?.

Explanation:

gdbbhwsjanakwgwjwnsbwinwnw

bajwjkwwjehjwkwkwmw

wmiwwijwkwkwmw

........,.................

.....

Answer:

1500

Explanation:

is that all the question?

Answer:

evaporation.

Explanation:

by boiling the mixture to dryness.

The mechanical advantage of the nutcracker is 3.5.

The Mechanical Advantage (MA) is a measure of how much a machine, such as a nutcracker, amplifies the input force. It is calculated by dividing the output force by the input force.

In your scenario, an input force of 75 N (Newtons) is applied to the nutcracker, and the output force exerted on the walnut is 262.5 N. To find the mechanical advantage, we will use the formula:

MA = Output Force / Input Force

Plugging in the values from your question, we have:

MA = 262.5 N / 75 N

MA = 3.5

The mechanical advantage of the nutcracker in this situation is 3.5. This means that the nutcracker amplifies the applied force by 3.5 times, allowing you to crack the walnut with greater ease. A higher mechanical advantage indicates that the machine is more effective at increasing the applied force, making tasks easier to accomplish.

know more about mechanical advantage here:

brainly.com/question/18345299

#SPJ11

Answer:Given that widgets have a price elasticity of 1.75, any increase in widget price will B) decrease total revenue.

Explanation:

The velocity of the boy in order to catch the ball is 3.8 m/s.

The time taken for the for the ball to fall from the given tower is calculated as follows;

t = √(2h/g)

where;

t = √(2 x 14.9 / 9.8)

t = 1.74 seconds

The velocity of the boy in order to catch the ball is calculated as follows;

x = Vxt

Vx = x/t

Vx = 6.62 m / 1.74 s

Vx = 3.8 m/s

Thus, the velocity of the boy in order to catch the ball is 3.8 m/s.

Learn more about velocity here: https://brainly.com/question/25749514

#SPJ4

The speed of a wave is the product of its frequency and wavelength. The speed of the periodic wave with the frequency of 3 Hz and wavelength of 2 m is 6 m/s.

Frequency of a wave is the number of wave cycles per unit time. It is the inverse of the time period of the wave. Frequency is inversely proportional to the wavelength  of the wave.

The relation between speed, frequency and wavelength of a wave is given by the expression as written below:

c =νλ

where, c is the speed, ν be the frequency and λ be the wavelength.

Given that ν = 70 or 70s⁻¹

and λ = 5 m

then speed c = 70 Hz × 5 m= 350 m/s

Therefore, the speed of the wave is 350 m/s.

Find more on wave speed :

https://brainly.com/question/28446485

#SPJ1

Answer:

50 Joules

Explanation:

Answer:

Buoyant force exerted water​ =  0.196 Newton

Explanation:

Given:

Mass of sphere ball = 5 kg

Volume = 2 x 10⁻⁵

Find:

Buoyant force exerted water​

Computation:

Buoyant force exerted water​ = Gravity due to acceleration x volume of object x density of given liquid

Buoyant force exerted water​ = 9.8 x 2 x 10⁻⁵ x 1000

Buoyant force exerted water​ =  0.196 Newton

Answer: 20 minutes

Explanation:

Given the following :

Average speed of train = 120km/hr

Distance = 40km.

The time take by the train moving at an average speed of 120km/hr to cover a distance of 40km due is ;

Recall:

Speed = distance / time

Therefore,

Time taken = distance covered / speed

Time taken = 40km / 120km/hr

Time taken = 1/ 3 hr

Therefore, 1/3 rd of an hour equals

1/3 × 60 = 20 minutes.

Time taken) 20 minutes

Time taken by tain to cover distance is 20 minutes as:

Distance= 40 km

Speed= 120 km/h

Time= distance/speed

= 40/120

= 1/3 hour

= 20 min

or  =0.33 hrs

To know more about' Time and Speed 'visit:

https://brainly.com/question/28735144

The efficiency of the washing machine would be 7.41%.

The efficiency of any machine is a measure of the useful energy of the machine.

More specifically, the efficiency of a machine is the ratio of the input energy to the output energy.

Mathematically:

Efficiency = output energy/input energy x 100%

For a machine that uses 1039 W of energy, this simply means that the input energy of the machine is 1039 W. However, not all of this energy will be used to work.

Hence, the amount of useful energy of the machine can be calculated as:

1039 - (274+688) = 77 W

Thus:

Efficiency = 77/1039 x 100

                = 7.41 %

In other words, the efficiency of the washing machine is 7.41% when rounded to 2 decimal places.

More on efficiency can be found here: https://brainly.com/question/13828557

#SPJ1

The electric field strengths E1, E2, and E3 are 2 V/m, 3 V/m, and 5 V/m, respectively.

The electric field strength, represented by E, measures the force exerted on a charged particle in an electric field per unit charge. It is a vector quantity, having both magnitude and direction. In this context, E1, E2, and E3 represent specific values of electric field strengths at different locations or under different conditions.

The units V/m (volts per meter) indicate the strength of the electric field per unit distance. For example, E1 = 2 V/m means that for every meter traveled, the electric field exerts a force of 2 volts on a charged particle. The electric field strength plays a crucial role in understanding and analyzing the behavior of charged particles in electric fields.

learn more about "electric field ":- https://brainly.com/question/14372859

#SPJ11

The solution is since the molar enthalpy of combustion for magnesium is 620 kJ/mol.

Enthalpy of Combustion (EoC) is the amount of energy released when a fuel is oxidized by an oxidizing agent.

25.5 kj of energy are released during the burning of a 1.0 g sample of magnesium to create MgO.

Magnesium has a molecular weight of 24.35g.

A mole of magnesium weighs 24.35 g.

1g = 1/24.35

The release of 25.5 kJ is for 0.04 moles.

25.5 * 1/.04 for 1 mole

= 620 kj/mol

As a result, magnesium has a molar enthalpy of combustion of 620 kJ/mol.

To know more about calorimeter visit:-

https://brainly.com/question/4802333

#SPJ4

Answer:

The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2.

Explanation:

Explanation:

Speed = distance / time

= 20 km / 1 hr

= 20 km/hr

≈ 5.56 m/s

The driving frequency for an underdamped mass-spring oscillator at which the driving force and velocity oscillation are approximately in phase is close to the natural frequency of the system. This frequency is when the system has the least amount of damping and therefore the highest resonant response.

The driving frequency has a significant effect on the phase of the driving force and velocity oscillation in an underdamped mass-spring system. If the driving frequency is equal to the natural frequency of the system, the driving force and velocity oscillation are in phase, meaning they reach their maximum value at the same time. However, if the driving frequency is different from the natural frequency, the phase difference between the two oscillations increases, resulting in a phase lag or lead between the driving force and velocity oscillation. The magnitude of this phase difference depends on the damping coefficient and driving frequency, which affects the overall response of the system.

To know more about Oscillation visit: https://brainly.com/question/12532152

#SPJ4

Given that the radius of the circular path is r = 142 m and the coefficient of the friction is

The condition for the car to travel safely is

Frictional force = centrifugal force

Here, m is the mass of the car and the acceleration due to gravity is g = 9.8 m/s^2.

v is the maximum speed of the car.

To find the value of w that will result in a maximum tensile bending stress of 3 ksi, we first need to determine the moment of inertia of the cross-sectional shape of the material in question. Once we have this value, we can use the following formula to calculate the maximum tensile bending stress:

σ = M*c/I

Where σ is the maximum tensile bending stress, M is the bending moment, c is the distance from the neutral axis to the outermost fiber, and I is the moment of inertia.

Assuming that the bending moment is known, we can rearrange the formula to solve for the required value of w:

w = (M*c)/(I*σ)

This will give us the required width of the material to ensure that the maximum tensile bending stress does not exceed 3 ksi. Please note that this is a long answer that requires additional information about the material and the conditions under which it will be used.

To know more moment of inertia, visit:

https://brainly.com/question/30051108

#SPJ11

At the center of our galaxy lies the supermassive black hole Sagittarius A*, often abbreviated Sgr A*. This giant is about 4 million times the mass of the sun and about 14.6 million miles (23.6 million kilometers) in diameter.

In physics, the Milky Way refers to the galaxy in which our solar system resides. The Milky Way is a barred spiral galaxy, meaning it has a central bar-shaped structure with arms spiraling out from it. The galaxy is estimated to be around 13.6 billion years old and contains billions of stars, as well as gas, dust, and dark matter.

The Milky Way has a diameter of approximately 100,000 light-years and is located about 26,000 light-years from the galactic center. It rotates once every 240 million years, with stars closer to the center moving faster than those on the outer edges. The gravitational force of the Milky Way holds the solar system in its orbit.

The study of the Milky Way is important in astrophysics as it provides insight into the evolution and formation of galaxies.

To learn more about Milky way visit here:

brainly.com/question/2806083

#SPJ4

Despite life not being possible on earth upon the demise of our sun, there will always be somewhere in our universe where it is possible.

This statement is true.

Everything exists in the cosmos. It encompasses all of space as well as the matter and energy that it holds. Even time is a part of it, and you are obviously a part of it. Along with the other planets and their numerous moons, Earth and the Moon are all components of the cosmos.

In general, the universe can take one of three forms: a flat universe, a spherical or closed universe (positive curvature), or a hyperbolic or open universe (negative curvature).

The clichéd response is that since space and time were both formed at the big bang, which occurred approximately 14 billion years ago, there is nothing outside of the cosmos. Beyond the observable universe, which may be 90 billion light years vast, however, is where most of the universe exists.

To learn more about universe from the given link:

brainly.com/question/21458024

#SPJ4

Impedance is a measure of the opposition to the flow of electrical current in a circuit. It is a complex quantity that includes both resistance and reactance, and is measured in ohms (Ω).

Impedance is an important concept in electrical engineering and is used to design and analyze electronic circuits, communication systems, and power systems.

We know that the capacitive reactance is;

Xc= 1/2πfC

Xc =1/2* 3.14 * 1 * 10^3 * (0.01 * 10^-6)

Xc = 15924 ohm

Then Z = √R^2 + Xc^2

Z = √(10 * 10^3) + (15924 )^2

Z = 18804 ohm

I = V/Z

I = 10V / 18804 ohm

I = 0.00053 A

Learn more about ohm:https://brainly.com/question/29750972

#SPJ1

Elements that are good conductors usually have only one electron in the valence ring. This statement is partially true. The elements that are good conductors usually have 1 to 3 valence electrons. These valence electrons are responsible for their electrical conductivity.

Metals are good conductors of electricity because they have valence electrons that are easily released from their atoms. Therefore, metals are characterized by having few valence electrons which allow the free flow of electrons. On the other hand, insulators and non-conductive elements are characterized by having many valence electrons that are closely bound to the atoms of the material.

For the second part of your question, the statement that "The MKS systems uses Meters, Kollyams, and Seconds as standards units" is incorrect.

The MKS system (meter-kilogram-second) uses meters, kilograms, and seconds as standard units of measurement for length, mass, and time respectively. It is the metric system used in science and engineering where measurements need to be expressed in a coherent system of units. The correct statement should be: "The MKS system uses Meters, Kilograms, and Seconds as standards units."

To know more about conductors visit :

https://brainly.com/question/14405035

#SPJ11

Answer:

The two factors that affect the type of Shadows formed are stated below ::

Answer:

The distance of the source of light from the object.

The angle at which the light rays fall on the object.

The size of the opaque object.

The size of the shadow depends on the distance of the source of light and on the angle at which the light rays fall on the object.

If the source of light is closer to the object, a larger shadow is formed than when the source of light is far from the object.

Explanation:

picture is in the top ️️️⬆️⬆️⬆️⬆️⬆️

It can be observed from the above figure that as the angle of light incident on the object changed the length of the shadow changed.

Hope you like this

Answer:

2 1 3

Explanation:

Answer:

the answer is 3,1,2

edg2020

Explanation:

The necessary battery bank for the residents of a remote village without grid electricity and wants to use solar power to pump underground water is 9 batteries

The details about requirements and battery are as follows:

Energy provided by battery = 12 * 225

Energy provided by battery = 2700 Wh

Since DOD is only 80 %, the battery will only provide 80 % of power.

Actual energy provided by battery = 2700 * 0.8

Actual energy provided by battery = 2160 Wh

Total energy needed in a day = 1080 * 18

Total energy needed in a day = 19440 Wh

Number of batteries required = 19440 / 2160

Number of batteries required = 9

Therefore, the necessary battery bank is 9 batteries

To know more about Number of batteries required

https://brainly.com/question/13300255

#SPJ4

Answer:

Explanation:I think it is c

When producing modest swings, the amplitude frequently has no impact at all on the pendulum's period. There is a tiny but insignificant rise in the period when the pendulum's amplitude is greater.

The distance to travel increases as the amplitude rises, but when the restoring force rises as well, the acceleration rises correspondingly.

This implies that the mass can move faster and cover a bigger distance. Since these qualities cancel one another, amplitude has no bearing on period.

A straightforward harmonic oscillator's period is independent of its amplitude. with the graphs of acceleration and velocity produced by the time derivatives. These oscillators also show how kinetic and potential energy can be transferred.

Therefore, the length of time is unrelated to the vibration's magnitude. Time period is unchanged by doubling the oscillation's amplitude.

Learn more about simple pendulum here:

https://brainly.com/question/29183311

#SPJ4

Answer:

I'm not that busy solving but I'll tell you the formula that Force x distance is equal to work done

The work is done on a pumpkin when we lift it by 15 m with 24 N is 360 J

Work done is the amount energy gained (loosed) in bringing the body from initial position to final position. It is denoted by W and its SI unit is joule(J).  

i.e. Work(W) is force(F) times displacement(s).

W=F× s

When a body is displaced with 1 newton of force by 1 m, then we can say that work has been done on the body by 1 joule.

Writing for it's dimension,

W=F× s

Force has dimension [L¹ M¹ T²]

Displacement has dimension [L¹]

multiplying both the dimensions Force and Displacement  

we get,

dimension of Work [L² M¹ T²]

According to newton's second law of motion,

Force(F) is mass(M) times acceleration(a).

i.e. F=ma

Given,

Force = 24 N

Displacement = 15 m

W=F.s= 24*15 = 360 J

Hence work done on pumpkin is 360 J

To know more about Work, click:

https://brainly.com/question/29989410

#SPJ3

The percent difference between these two measurements is 6.36%.

The resistance found by an experiment is equal to 236092 and 251092.                     The percent difference between the two resistance can be calculated by taking the difference between the two values, 251092 - 236092 = 15000, and then dividing by the original value, 236092, and multiplying by 100. The result is 6.36%, which is the percent difference between the two measurements.

To know more about percent difference please refer:

https://brainly.com/question/15461083

#SPJ4