If an ice cube with the mass of 5.0 grams melts in a closed system such as a closed glass jar what is the mass of the liquid water after the ice cube completely melts

Answer:

c. Both require the same amount of work

Explanation:

GPE = mgh

50 * 10 * 2 = 1000 J

25 * 10 * 4 = 1000 J

Therefore, both are same and require the same amount of work.

Thenk and mark me brainliest :)

Both require the same amount of work. The correct option is C.

The potential energy that a massive object has in relation to another massive object due to gravity is known as gravitational energy or gravitational potential energy. When two objects fall toward one another, potential energy associated with the gravitational field is released.

Given that there are two activities,

1) lifting a 50 kg sack vertically 2 meters.

2)  lifting a 25 kg sack vertically 4 meters.

The energy required to lift the weight will be calculated as:-

GPE = mgh

50 x 10 x 2 = 1000 J

25  x  10 x  4 = 1000 J

So we can conclude that both activities require the same amount of work.

Therefore, both require the same amount of work. The correct option is C.

To know more about gravitational potential energy follow

https://brainly.com/question/20215718

#SPJ6

The magnitude of the velocity of S with respect to S' is 0.866 times the speed of light, and it is in the negative x-direction (i.e., opposite to the direction of motion of S').

Explanation:

The problem can be solved using the concept of relativity of simultaneity and the Lorentz transformation equations. Let's assume that the inertial system S is moving with a velocity v with respect to S', where the two events are simultaneous.

Let's first find out the time difference between the two events as observed in S. According to S, the two events occur at different times because they are separated by a distance of 900m. Let's call this time difference Δt.

Δt = 900m / c = 3 × 10^−6 S

where c is the speed of light.

Now, let's apply the Lorentz transformation equations to relate the time difference Δt in S to the time difference Δt' in S':

Δt' = γ(Δt - vΔx/c^2)

where Δx is the distance between the two events as measured in S, and γ is the Lorentz factor given by:

γ = 1 / sqrt(1 - v^2/c^2)

Since the two events are simultaneous in S', we have Δt' = 0. Also, Δx = 900m, and Δt = 3 × 10^−6 S.

Solving for v, we get:

v = Δx / (γΔt)

Substituting the values of Δx, Δt, and γ, we get:

v = 0.866c

Graham's law states that the rate of diffusion or effusion of two gases is inversely proportional to the square root of their molar masses

For diffusion:-

\(\\ \sf\longmapsto \dfrac{V_x}{V_y}=\sqrt{\dfrac{m_y}{m(x}}\)

For effusion

\(\\ \sf\longmapsto \dfrac{R_x}{R_y}=\sqrt{\dfrac{m_y}{m_x}}\)

There are meters created to precisely measure the fundamental values of voltage, current, and resistance for analyzing and testing circuits.

Any apparatus designed to precisely detect and present an electrical quantity in a way that can be understood by a human is referred to as a meter. The majority of the current flows via one branch, while the remainder flows through the other branch. At the point of meter insertion, an ammeter is used to measure the amount of current (in amps or milliamps) flowing in a circuit. The circuit element you are measuring is always linked in series with an ammeter. The most frequent measurements in an electrical circuit are typically made with a meter. Current is measured by an ammeter.

To learn more about circuit schematic refer to:

https://brainly.com/question/27084657

#SPJ9

Answer:

1. The day-to-day conditions of the atmosphere at a place with respect to elements like humidity, temperature, wind speed, rainfall, etc. is called the weather of that place.

2. Weather can be cloudy, sunny, rainy, stormy or clear. It is a part of the natural phenomenon which maintains the equilibrium in the atmosphere.

3. But conditions can be worse sometimes. When the atmospheric conditions are extreme or intense enough to cause property loss or life loss, such weather is termed as severe weather.

4. These also vary according to the altitudes, latitudes, and region and pressure differences. Tornadoes, cyclones, heavy rainfall, fog, winter storms come under this category. They are disastrous and hazardous. Proper disaster management and strategies are required to handle these conditions.

Answer: Rectangular frames are easy to make but can get pulled out of shape. so if the sides are still attached , then the figure formed is parallelogram. useing the given measurement use the formula of a parallelogram.

formula : A = BASE X HEIGHT

Explanation:

Explanation:

Solution,

Given:-

Now,

By using the formula of volume of a cuboid, we have

Hence, last option is the correct answer.

Based on the diagram, the correct statement is: Government and consumers make economic decisions in a mixed economy, while consumers make economic decisions in a market economy.

In a mixed economy, economic decisions are made by both the government and consumers.

The government plays a significant role in regulating and influencing economic activities through policies, regulations, and interventions.

In market economy, economic decisions are primarily made by consumers. The market forces of supply and demand dictate the allocation of resources, production levels, and pricing.

The freedom to buy and sell whatever they choose is what ultimately determines how commodities and services are produced and distributed.

Learn  more about Economic Decisions at:

brainly.com/question/30296708

#SPJ1

Answer:

18.89cm

Explanation:

As we know that the person is standing 5m in front of the camera

\(d_0=5m=500cm\)

The focal length of the lens =50cm

f=50 cm

By Lens formula we have:

\(\dfrac{1}{f} = \dfrac{1}{d_i} + \dfrac{1}{d_o}\\\dfrac{1}{50} = \dfrac{1}{d_i} + \dfrac{1}{500}\\\dfrac{1}{d_i} =\dfrac{1}{50}-\dfrac{1}{500}\\\dfrac{1}{d_i}=0.018\\d_i=55.56cm\)

By the formula of magnification

\(\dfrac{h_i}{h_o} = \dfrac{55.56}{500}\\\\h_i = \dfrac{55.56}{500} \times h_o\\\\ h_o=1.70m=170cm\\\\Therefore: h_i=\dfrac{55.56}{500} \times$ 170 cm\\\\h_i =18.89 cm\)

The height of the image formed is 18.89cm.

The process of refraction of light​ occurs when light rays bends when travelling between media of different densities.

What is refraction of light?

Refraction of light is the bending of light rays or the change in the direction of light rays as it travels between media of different densities.

Light waves travel faster in media of less density than media of more density.

The change in density of the media makes light waves to be bend towards or away from the normal.

For example, when light travels from less dense air to more dense water, the light rays are bent towards the normal. However, when light rays travel from water to air, the light rays are refracted away from the normal.

In conclusion, refraction of light waves occur when light crosses the boundary of media of different densities.

Learn more about refraction of light at: https://brainly.com/question/27932095

#SPJ1

Answer: Initial Velocity

Explanation:

The formula is:

Δx = Vit + 1/2at^2

Therefore the initial velocity is zero

The statements that apply are;

We know that the pressure can be taken as the force with which the molecules of the substance are able to hit the walls of the container in this case, we need to obtain the  pressure of the ethanol vapor when the volume has been reduced.

Using

P1 = initial pressure

P2 = final pressure

V 1 = initial volume

V2 = final volume

By the use of the Boyle's law we have;

P1V1 = P2V2

P2 = P1V1 /V2

P2 = 67.0 * 529/344

P2 = 103 mmHg

Thus, as the volume is reduced there would be an increase in the pressure and some of the ethanol would condense and we would have liquid ethanol in the system.

Learn more about pressure of a vapor:https://brainly.com/question/11864750

#SPJ1

Answer:

Explanation:

There are two main ways to de-starch leaves of a plant - the 'Light Exclusion' Method and the 'Carbon Dioxide Deprivation' Method. The 'Light Exclusion' method is a simpler procedure and is used often. Leaves can be destarched by depriving them of light for an extended period of time, usually 24-48 hours.

Answer:

1.07×10−2m/s2 towards the center of the Earth.

Answer: 56.4

Explanation:

v=√γRTM

v=√xT  T=127

2/3v = 2/3 √xT  √127 = 11.

7.51 x 7.51 = 56.4

hope this helps!

Answer:

F = 233.52 N,  θ' = 351.41º

Explanation:

In this exercise we must find the net force applied on the donkey.

For this we use Newton's second law, where we create a reference frame with the horizontal x axis

let's decompose the forces

Jack

        = 80.5 N

Jill

       cos 45 = F_{2x} / F₂2

       sin 45 = F_{2y} / F₂2

       F_{2x} = F₂ cos 45

       F_{2y} = F₂ sin 45

       F_{2x} = 81.7 cos 45 = 57.77 N

       F_{2y} = 81.7 sin 45 = 57.77 N

Jane

      cos (270 + 45) = F_{3x} / F₃3

      sin 315 = F_{3y} / F₃

      F_{3x} = 131 cos 315 = 92.63 N

      F_{3y} = 131 sin 315 = -92.63 N

the force can be found in each axis

X axis

         F_{x} = F_{1x} + F_{2x} + F_{3x}

         F_{x} = 80.5 +57.77 + 92.63

         F_{x} = 230.9 N

Axis y

         F_{y} = F_{1y} + F_{2y} + F_{3y}

         F_{y} = 0 + 57.77 -92.63

         F_{y} = -34.86 N

we can give the result in two ways

a) F = (230.9 i ^ - 34.86 j ^) N

b) in the form of module and angle

we use the Pythagorean theorem

         F = √(Fₓ² + F_{y}²

        F = √(230.9² + 34.86²)

        F = 233.52 N

let's use trigonometry for the angle

        tan θ = \(\frac{F_y}{F_x} }\)

        θ = tan⁻¹ (\frac{F_y}{F_x} })

        θ = tan⁻¹ (-34.86 / 230.9)

        θ = -8.59º

if we measure this angle from the positive side of the x-axis counterclockwise

          θ' = 360 -θ

          θ‘= 360- 8.59

          θ' = 351.41º

Answer:206.3

Explanation:

Answer:

1.84m

Explanation:

Given parameters:

Initial velocity  = 6m/s

Unknown:

height of jump  = ?

Solution:

To solve this problem, we have to apply the right motion equation:

        V²  = U²  - 2gH

V is the final velocity

U is the initial velocity

g is the acceleration due to gravity  = 9.8m/s²

H is the height

   Final velocity is 0

  Solve;

           0² = 6² - 2x9.8xH

           -36  = -19.6H

               H = 1.84m

The magnitude of the electric flux through the sheet is 4.05 N m² C⁻¹ (Option E).

The electric flux through a surface is given by the product of the electric field strength and the area of the surface projected perpendicular to the electric field.

In this case, the electric field strength is 18 N C⁻¹, and the area of the sheet projected perpendicular to the electric field is 0.450 m²

(since the normal to the sheet makes an angle of 60° with the electric field). Multiplying these values gives the electric flux:

Electric flux = Electric field strength × Area

Electric flux = 18 N C⁻¹ × 0.450 m²

Electric flux = 8.1 N m² C⁻¹

In summary, the magnitude of the electric flux through the sheet is 4.05 N m² C⁻¹. This value is obtained by multiplying the given electric field strength by the projected area of the sheet perpendicular to the electric field.

The angle of 60° is taken into account to determine the effective area for calculating the flux.(Option E).

for such more questions on electric

https://brainly.com/question/1100341

#SPJ8

The approximate heat transfer through 1.65 cm of air with a temperature difference of 23.0 °C is approximately 24.4 J/s.

To approximate the heat transfer through the air layer in the double-paned window, we can assume that the glass layers have a negligible impact on the heat flow. The heat transfer can be calculated using Fourier's Law of Heat Conduction, which states that the heat flow (Q) is proportional to the temperature difference (ΔT) and inversely proportional to the thickness (L) and thermal conductivity (k) of the material.

First, we need to calculate the effective thermal conductivity of the air layer due to its thickness and the thermal conductivity ratio between air and glass. Let's denote the thermal conductivity of air as k_air and the thermal conductivity of glass as k_glass. Since glass has a thermal conductivity roughly 36 times greater than air, we have k_glass = 36 * k_air.

Next, we calculate the effective thermal conductivity of the air layer as:

k_eff = (k_air * L_air) / (L_air + k_glass)

Substituting the given values, we have:

k_eff = (k_air * 0.0165 m) / (0.0165 m + 0.005 m) = 0.01309 * k_air

Now, we can calculate the heat flow per second through the air layer using the formula:

Q = (k_eff * A * ΔT) / L_air

Substituting the given values, we get:

Q = (0.01309 * k_air * 0.760 m^2 * 23.0 K) / 0.0165 m = 24.4 J/s

Therefore, the approximate heat transfer through 1.65 cm of air with a temperature difference of 23.0 °C is approximately 24.4 J/s.

For more questions on temperature, click on:

https://brainly.com/question/27944554

#SPJ8

Answer:

. always start on the north pole and terminate (end) on the South Pole

Explanation:

Answer:

clear out the junk, and plant some stuff

Explanation:

clear out all of the nasties, unless it is biodegradable, or you could get some mushrooms to break everything down, then you can go and plant some stuff or do whatever. You could turn it into a playground, park, whatever.

Answer:

0.124 miles

Explanation:

Since the radius of the atom R = 10000r where r = radius of nucleus. Now, if r = 2.0 cm = 0.02 m,

R = 10000r

= 10000 × 0.02 m

= 200 m

We know that 1 mile = 1609 m.

So the radius of the atom in miles is R = 200 m × 1 mile/ 1609 m = 0.124 miles

So, the radius of the atom in miles is 0.124 miles  

The power wasted in the transmission line connecting the power house to the consumer is 2kW.

The equation Power = Potential difference*Current, or P = VI, can be used to compute the amount of energy that is wasted.

We can see that it is given,

V1 = 600 V

V2 = 580 V

Current= I = 100 A

We need to figure out how much energy is lost in the transmission line that runs from the generator to the consumer.

In physics, power is the amount of energy that is transferred or transformed in a given amount of time.

The International System of Units uses the watt, or one joule per second, as the unit of power.

The formula for the voltage across the transmission line is V = V1 - V2.

Thus, V = 600 - 580

V = 20V

We've been told that I equals 100 A.

The power loss equation is given by P = VI, where V is the potential difference and I is the current.

Power loss = VI, therefore becomes

P = 20 × 100

P = 2000 W

P = 2kW

Therefore, 2 kW of power is lost in the transmission line that connects the power source to the customer.

To learn more about power visit:

https://brainly.com/question/26242109

#SPJ9

It is to be noted that the y-intercept of the graph is 20. The slope is -0.2; while the area under the graph is: 840

At x = 0, the value of y is 20. Hence the intercept of the graph is 20.

To compute the slope, recall that the graph passes through points (0, 20) and (60, 8) hence the solution of the graph is given as:

Change in y coordinate/Change in x coordinate

= (8-20)/60-0)

= -12/60

= -1/5 or -0.2

The area under the graph compares a right-angled triangle and a rectangle. To get the area under the graph we need to find the sum of the areas of both shapes.

Recall that Area of a Right Angled Triangel is given as 1/2 B*H

Hence

⇒ 1/2 * 12 * 60

= 360

The area of a rectangle is L x B

Hence

⇒ 8 x 60

= 480

Thus, the area under the graph is

360 + 480

= 840

Learn more about graph solutions;
https://brainly.com/question/17267403
#SPJ1

The given problem can be exemplified in the following diagram:

We are given that a ladder is against a wall. According to the diagram, the ladder, the wall, and the floor form a right triangle, therefore, if "T" is the distance from the top to the floor and "B" is the distance from the bottom to the wall we can apply the Pythagorean theorem and we get:

Now, since we want to know the speed, we will derivate implicitly with respect to time on both sides of the equation:

Now we solve for the value of the speed of the top of the ladder, this is dT/dt:

The 2 cancels out:

Now we divide both sides by "T":

Now, since we determine the value of "T" from the Pythagorean theorem, we get:

Subtracting B squared from both sides:

Taking the square root:

Now we replace these values in the formula for the velocity:

Now we have an expression for the velocity of the top of the ladder. Replacing the given values:

Solving the operations we get:

Therefore, the speed of the top of the ladder is -0.47 feet per second.

Answer:

d) electrons removed.

Explanation:

Two insulators are electrically neutral, that is, the number of electrons and protons are equal. When one insulator is rubbed against another, electrons are removed from one of the insulators due their high mobility. The insulator which lost the electrons becomes positively charged while the one that gained the electron becomes negatively charged.

Therefore, when rubbing two insulators together, the one that gets a positive charge has had electrons removed.

The rock's altitude y at time t, thrown with initial velocity v, is given by

\(y=74\,\mathrm m+vt-\dfrac12gt^2\)

where \(g=9.80\frac{\rm m}{\mathrm s^2}\) is the acceleration due to gravity.

After t = 2.7 s, the rock reaches the water (0 altitude), so

\(0=74\,\mathrm m+v(2.7\,\mathrm s)-\dfrac12g(2.7\,\mathrm s)^2\)

\(\implies v=-\dfrac{74\,\mathrm m-\frac g2(2.7\,\mathrm s)^2}{2.7\,\mathrm s}\approx-14.177\dfrac{\rm m}{\rm s}\)

so the rock was thrown with a velocity with magnitude 14 m/s and downward direction.

Its velocity at time t is \(v-gt\) (with no horizontal component), so that at the moment it hits the water, its velocity is

\(v-g(2.7\,\mathrm s)\approx-40.637\dfrac{\rm m}{\rm s}\)

That is, its final velocity has an approximate magnitude of 41 m/s, also directed downward.

1) The force acting on the object during the time interval 0-3 seconds is 1/3 N.

2) The force acting on the object during the time interval 6-10 seconds is -0.5 N.

3) There is no time interval in which no force acts on the object.

(i) Force acting on the object in time interval 0-3 seconds. Force acting on the object is equal to the product of its mass and acceleration, i.e.,F = ma.

In the given velocity-time graph, the acceleration of the object can be determined by determining the slope of the velocity-time graph from 0 to 3 seconds.

Slope = (change in velocity) / (change in time)= (20-0) / (3-0) = 20/3 m/s^2

Acceleration, a = slope= 20/3 m/s^2

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × 20/3= 1/3 N.

Therefore, the force acting on the object during the time interval 0-3 seconds is 1/3 N.

(ii) Force acting on the object in time interval 6-10 seconds. Similar to the first question, the force acting on the object in time interval 6-10 seconds can be determined by determining the acceleration of the object during this time interval.

The slope of the velocity-time graph from 6 seconds to 10 seconds can be determined as follows:

Slope = (change in velocity) / (change in time)= (-20-20) / (10-6) = -40/4= -10 m/s^2 (negative sign indicates that the object is decelerating)

Mass of the object, m = 50 g = 0.05 kg

∴ Force acting on the object, F = ma= 0.05 × (-10)= -0.5 N.

Therefore, the force acting on the object during the time interval 6-10 seconds is -0.5 N.

(iii) Time interval in which no force acts on the object. There is no time interval in which no force acts on the object. This is because, as per Newton's first law of motion, an object will continue to remain in a state of rest or uniform motion along a straight line unless acted upon by an external unbalanced force.In other words, if the object is moving with a constant velocity, there must be a force acting on the object to maintain its motion.

Therefore, there is no time interval in which no force acts on the object.

For more such questions on force, click on:

https://brainly.com/question/12785175

#SPJ8