Calculate the force between charges of 5.0x10^-8c and 1.0x10^-7c if they are .15m apart

The change of phase takes place when the amount of heat added is changing the state and the temperature of the system remains constant.

In the given graph, the ice is changed into the water state through segment B-C.

Then the water is changed into a water vapor state in the segment D-E.

Hence, changes of state occur at segment B-C and segment D-E.

Total heat removed = 473.04 kCal

Heat removed to convert the 116°C to 100°C steam

Heat removed from 100°C of steam to 100°C of water (Latent heat of condensation)

Heat removed from 100°C water to 0°C water

Heat removed from 0°C water to 0°C ice

Total heat removed = 20758.4J + 1467050 + 273000 + 218400

Total heat removed = 1979208.4 J

Convert to kilocalorie

Total heat removed = 1979208.4/4184

Total heat removed = 473.04 kCal

ANSWER

EXPLANATION

To find the index of refraction of the liquid, we have to apply the formula for critical angle:

where nr = refractive index of air = 1

ni = refractive index of liquid

Hence, by substituting the given values into the equation, we have that the index of refraction of the liquid is:

That is the answer.

In order to measure the resistance in the circuit, we need to know the voltage V and the current I in the circuit, this way we can calculate the resistance using the formula:

In order to calculate the current, we can use an amperemeter that must be in series with the circuit, this way it will not affect the circuit.

And in order to calculate the voltage, we can use a voltmeter that must be in parallel with the resistance, this way it will not affect the circuit.

The correct option that shows an amperemeter in series and a voltmeter in parallel is the fourth option.

Check each option to see how it relates to different concepts.

Option 1: E=hf

This equation tells the energy carried by an electromagnetic wave with frequency f.

Option 2: E=mc

This equation is not correct, since the left member is measured in units of energy and the right member does not.

Option 3: E=(1/2)mv^2

This equation relates the energy of a moving object with its mass and its velocity. It is known as kinetic energy.

Option 4: E=mc^2

Since c is a constant (the speed of light), this equation relates the energy of an object with its mass.

Therefore, the mass/energy equivalence is expressed mathematically in the equation:

the minimum force is 6 Newtons

Explanation

A moment of a force, or a torque, is a measure of a force's tendency to cause a body to rotate. The moment depends on both the force, and on the position at which the force acts, it is given by the expression

where F is the exerted force and d is the distance

Step 1

then, let

now, replace in the formula

therefore, the minimum force is 6 Newtons

I hope this helps you

The velocity of the particle at 0 s and at 1.0 and the average velocity between 0 s and 1.0

a)[tex]\vec{V}(0)=0 m / s[/tex]

[tex]\vec{V}(1)=(8 \hat{\imath}+6 \hat{k}) m / s[/tex]

b)[tex](4 \hat{\imath}+2 \hat{k}) \mathrm{m} / \mathrm{s}[/tex]

This is further explained below.

Generally, the equation for the Position is mathematically given as

F(t) = 4.01²î - 3.0ĵ +2.03 km.

Therefore

[tex]\begin{aligned}&\vec{r}(t)=\left(4 t^2 \hat{l}-3 \hat{\jmath}+2 t^3 \hat{k}\right) m \\&\vec{V}(t)=\frac{d \vec{r}(t)}{d t}=\left(8 t \hat{\imath}+6 t^2 \hat{k}\right) m / s\end{aligned}[/tex]

For A

[tex]\begin{aligned}&\vec{V}(0)=0 m / s \\&\vec{V}(1)=(8 \hat{\imath}+6 \hat{k}) m / s\end{aligned}[/tex]

For B

[tex]\text { Average velocity } &=\frac{\text { Total displacement }}{\text { time interval }} \\[/tex]

[tex]=\frac{\vec{r}(1)-\vec{r}(0)}{1} \\&=4 \hat{\imath}-3 \hat{\jmath}+2 \hat{k}-\left(-3 \hat{\jmath}^{\prime}\right) \\&=(4 \hat{\imath}+2 \hat{k}) \mathrm{m} / \mathrm{s}\end{aligned}[/tex]

In conclusion, The speed of the particle at 0 seconds and at 1.0 seconds, as well as the average speed between 0 seconds and 1.0 seconds

a)[tex]\vec{V}(0)=0 m / s[/tex]

[tex]\vec{V}(1)=(8 \hat{\imath}+6 \hat{k}) m / s[/tex]

b)[tex](4 \hat{\imath}+2 \hat{k}) \mathrm{m} / \mathrm{s}[/tex]

Read more about average velocity

https://brainly.com/question/862972

#SPJ1

The final velocity of the student after travelling 12 m is 4 m/s.

The final velocity of the student is determined by applying the following Kinematic equation.

v² = u² + 2as

where;

v² = (2)² + 2(0.5)(12)

v² = 16

v = √16

v = 4 m/s

Learn more about final velocity here: https://brainly.com/question/25905661

#SPJ1

Grant jumps 1.10 m straight up into the air to slam-dunk a basketball into the net, the speed from which he would have left the floor would be 4.64 m / s .

There are three equations of motion given by  Newton

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

As given in the problem grant jumps 1.10 m straight up into the air to slam-dunk a basketball into the net.

By using the third equation of the motion,

v² - u² = 2 × a × s

0 - u² = 2 × -9.81 × 1.10

u = 4.64 m / s

Thus,  the speed from which he would have left the floor would be 4.64 m / s .

To learn more about equations of motion here, refer to the link given below;

brainly.com/question/5955789

#SPJ1

Work does Scott do to push a 74 kg sofa 2.1 m across the floor at a constant speed. The coefficient of kinetic friction between the sofa and the floor is 0.23 is 349 Nm.

given that :

mass = 74 kg

distance d = 2.1 m

coefficient of kinetic friction , μk  = 0.23

work done is given as :

w = fd

f = μk m g

f = 0.23 × 74 × 9.8

f = 166 N

therefore ,

work = fd

w = 168 × 2.1

w = 349 Nm

Work does Scott do to push a 74 kg sofa 2.1 m across the floor at a constant speed. The coefficient of kinetic friction between the sofa and the floor is 0.23 is 349 Nm.

To learn more about Work here

https://brainly.com/question/13662169

#SPJ1

Advantages of Surface tension are -

It gathers water into a ball.

It permits a distinct boundary layer that is similar to a non-Newtonian liquid.

It enables water to rise into a paintbrush through capillary action.

It permits rain to fall as drops as opposed to a stifling mass.

It enables smooth surfaces to form as concrete and liquid metals solidify.

Disadvantages of Surface tension are -

The behavior of water would alter if surface tension were eliminated, some of these changes being related to surface tension's drawbacks. Washing clothing is one example that is close to home. Detergent is required while washing garments due to the comparatively high surface tension of water. Reduced surface tension enables laundry water to fully permeate the garments for better cleaning as part of the task of laundry detergent. It would take far less detergent to wash clothes if water had a naturally low surface tension.

When you want to create a fine water spray, such as with a lawn sprinkler, surface tension again becomes an issue. Surface tension makes it harder to divide water into tiny droplets. Sprinklers could operate on a hose with less pressure if they were used with water that had a lower surface tension.

What is a surface tension ?

Surface tension is the propensity for liquid surfaces that are at rest to condense into the smallest surface area. Razor blades and insects (like water striders), which have a higher density than water, can float on the surface of the water without even becoming partially buried because to surface tension.

Surface tension at liquid-air contacts originates from the liquid molecules' stronger attraction to one another due to cohesion than to the air molecules (due to adhesion).

There are primarily two mechanisms at work. One causes the liquid to constrict by exerting an inward push on the surface molecules. The second force is tangential and parallel to the liquid's surface. The surface tension is the common name for this tangential force. 

Overall, the liquid acts as though an elastic membrane was stretched over its surface. However, this comparison should not be drawn too far because surface tension is a characteristic of liquid-air or liquid-vapor interfaces, but the tension in an elastic membrane depends on how much it is deformed.

Advantages of Surface tension are -

It gathers water into a ball.

It permits a distinct boundary layer that is similar to a non-Newtonian liquid.

It enables water to rise into a paintbrush through capillary action.

It permits rain to fall as drops as opposed to a stifling mass.

It enables smooth surfaces to form as concrete and liquid metals solidify.

Disadvantages of Surface tension are -

The behavior of water would alter if surface tension were eliminated, some of these changes being related to surface tension's drawbacks. Washing clothing is one example that is close to home. Detergent is required while washing garments due to the comparatively high surface tension of water. Reduced surface tension enables laundry water to fully permeate the garments for better cleaning as part of the task of laundry detergent. It would take far less detergent to wash clothes if water had a naturally low surface tension.

When you want to create a fine water spray, such as with a lawn sprinkler, surface tension again becomes an issue. Surface tension makes it harder to divide water into tiny droplets. Sprinklers could operate on a hose with less pressure if they were used with water that had a lower surface tension.

To know more about surface tension from the link

https://brainly.com/question/138724

#SPJ9

ANSWER

38.34 m/s

EXPLANATION

Given:

• The mass of the coaster, m = 839 kg

• The initial height of the coaster, h = 75 m

• The acceleration due to gravity, g = 9.8 m/s²

Find:

• The final velocity of the roller coaster at the bottom of the hill, v.

The roller coaster starts from rest, so at the top of the hill, it only has gravitational potential energy and no kinetic energy. Then, at the bottom of the hill, the roller coaster is in motion, to it has kinetic energy, and, because the difference of height with the reference - which is the bottom of the hill, is zero, it has no potential energy,

By the work-energy theorem, we have the equation,

As explained above, the initial kinetic energy is 0 and the final potential energy is also 0. If we assume that there is no friction, air resistance, or other external forces, then the work done by non-conservative forces is also 0,

Replace each kind of energy with the expression to obtain them,

The mass cancels out,

Solving for v,

Replace with the known values and solve,

Hence, the velocity of the roller coaster at the bottom of the hill is 38.34 m/s, rounded to the nearest hundredth.

ANSWER:

D)each block has the same kind of charge but we don't' know what kind it is

STEP-BY-STEP EXPLANATION:

Two charges of the same type always repel each other.

In this case, it is not possible to know what type of load they are, only that they are the same.

Therefore, the correct answer is:

D)each block has the same kind of charge but we don't' know what kind it is

A process is an action that involves individual items, not the items themselves.

Answer: Machine grinds peanuts

The size of the upwards force due to the water (upthrust) acting on the sphere is 12.64 N.

Buoyancy or upthrust, is an upward force exerted by a fluid on an object immersed in the fluid due to the weight of the object

Thus, upthrust is the upward force acting on an object immersed in a liquid.

Fu - Df = F(net_u)

where;

Fu - F x sin(21) = ma x sin(19)

where;

Fu -  20 x sin(21) = (4 x 4.2) x sin(19)

Fu - 7.17 = 5.47

Fu = 12.64 N

Learn more about upthrust here: https://brainly.com/question/23931817

#SPJ1

To find

The source of the Sun’s heat and light energy is:

Explanation

The sun's core is very hot. So under pressure nuclear fusion takes place. Here hydrogen is changed to helium.

Conclusion

The correct option is

B. fusion of hydrogen nuclei.

Consider that a general way of writing a line equation is:

y = mx + b

where m is the slope of the line and b is the y coordinate of the y-intercept of the line.

Then, by using the given information:

m = 1/2

b = 7

You have the following equation of line:

y = 1/2*x + 7

Answer:

Budget

Explanation:

Have good day!!!

The expression for the acceleration due to gravity can be given as,

Here, g is the acceleration due to gravity, G is the gravitational constant, M is the mass of planet and R is the distance from the center of planet.

Therefore, the acceleration due to gravity depends upon the distance from center of planet and the mass of planet.

Given

Resistance of the oven, R=50.0 ohm,

Voltage is V=220 V

To find

The current drawn

Explanation

Let the current be I

By Ohm's law,

Putting the values,

Conclusion

The current drawn is 4.4 A

We are asked to determine the x-coordinate of the center of mass of the given bricks. To do that, we will use the following formula:

Where:

Since we have three bricks, the formula expands to:

Since we have three bricks with the same characteristics we will assume the three of them have the same mass:

Taking "m" as a common factor and adding like terms in the denominator we get:

Now we cancel out the "m":

Now we determine the x-coordinates of each brick. Each brick is a parallelepiped, therefore, the x-coordinate is in the middle. Since each brick measures L, this means that the x-coordinate of the first brick is:

For the second brick, we have the L/2 of the separation from the first plus the L/2 of its length, therefore:

Now, for the third brick we have the L/4 of the separation from the second brick plus the L/2 of the separation of the second brick and the first brick and the L/2 of the length of the third brick, therefore:

Now we substitute in the formula for the x-coordinate:

Adding like terms in the numerator:

Simplifying:

Therefore, the x-coordinate of the center of mass is located at 11L/6 from the origin.

If you put your spoon in the microwave, nothing will happen to it as long as it has round edges and it is not touching any sides of the microwave.

Spoons are generally made from stainless steel. Stainless steels are iron and chromium. In some cases, other metals such as nickel are thrown into the mix.

Thus, being made of metals, these stainless steels are good conductors of heat and electricity.

A microwave works by heating foods put into it using electromagnetic radiation in the microwave frequency range. Electromagnetic radiation causes the molecules of food to rotate and produce thermal energy.

If the spoon touches the side of the microwave, sparks may result. Otherwise, it is totally fine because spoons usually have round edges. With rough edges,  the waves may be reflected back and forth and create sparks.

More on microwaves can be found here: https://brainly.com/question/1593533

#SPJ1

For practical reasons, we can consider each side of the square as an infinite wire. This can be seen on the following drawing:

This way, the field on the center will be the sum of the contribution of each wire. We can calculate the contribution of a single wire as:

Then, the total field will be this, multiplied by the number of wires:

Then, the resulting field will be Bt=36.46uT

(a) The impulse experienced by the player is 117 Ns.

(b) The force the floor exert on the player before the jump is 637 N.

(c) The total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump is 260 N.

The impulse experienced by the player is the change in the momentum of the player.

J = ΔP

J = m(v - u)

where;

J = 65 x (0 + 1.8)

J = 117 Ns

The force the floor exert on the player before the jump is calculated as;

F = mg

where;

F = 65 x 9.8

F = 637 N

The total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump is calculated as;

F = ma

F = m(v/t)

F = (mv)/t

F = (65 x 1.8) / 0.45

F = 260 N

Learn more about impulse here: https://brainly.com/question/25700778

#SPJ1

A. The time taken for the glass to hit the floor is 0.5 s

B. The horizontal distance travelled by the glass in the air is 1.1 m

A. How to determine the time

The following data were obtained from the question:

The time taken to hit the ground can be obtained as follow:

h = ½gt²

1.1 = ½ × 9.8 × t²

1.1 = 4.9 × t²

Divide both side by 4.9

t² = 1.1 / 4.9

Take the square root of both side

t = √(1.1 / 4.9)

t = 0.5 s

Thus, the time taken is 0.5 s

B. How to determine horizontal distance

The horizontal distance can be obatined as follow:

s = ut

s = 2.1 × 0.5

s = 1.1 m

Thus, the horizontal distance is 1.1 m

Learn more about motion under gravity:

https://brainly.com/question/22719691

#SPJ1

a) 1 foot = 12 inches

159 feet = 159 x 12 = 1908

The distance in inches is 1908 inches

b) 1 inch = 2.54 cm

1908 inches = 1908 x 2.54 = 4846.32

The distance in centimeters is 4846.32 cm

c) 100 cm = 1 m

4846.32 cm = 4846.32/100 = 48.4632

The distance in meters is 48.4632 m

d) 1000m = 1 km

48.4632 m = 48.4632/1000 = 0.0484632

The distance in kilometers is 0.0484632 km

Given:

m1 = mass 1 = 1kg

v1= initial velocity 1 = 12 m/s

m2= mass 2 = 3 kg

P after = momentum after collision = 15 kgm/s

(i)

Momentum of Ball A before collision

Momentum = mass x velocity

Pa = m1 v1

Replacing with the values given:

Pa = (1 kg) (12 m/s) = 12 kg m/s

(ii)

Momentum before = momentum after

Pa + Pb = P after

12 + Pb = 15

Since The ball B is travelling North, the distances travelled form a right triangle:

Apply pythagorean theorem:

c^2 = a^2 + b^2

Where c is the hypotenuse= P after = 15

a & b are the other 2 legs of the triangle = Pa and Pb

Replacing:

15^2 = 12^2 + Pb^2

Solve for Pb

15^2 - 12^2 = pb^2

√15^2 -12^2 = Pb

pb= 9 kgms^2

From the given figure, let's determine the solar radiation intensity 8000 years ago.

We can see the solar radiation intensity is represented on the left vertical (left side of the y-axis), while the number of years is represented on the x-axis.

Using the graph, at 8 thousand(8000) years ago, the radiation intensity was closest to 500 watts/m².

T

According to Newton's second law of motion,

Let the initial force be F, acceleration be a and the initial mass be m.

The acceleration is the same but now the mass is reduced by half.

So, the force will be

Thus, the force will also be half of the initial force if the mass is reduced by half.

ANSWER:

(a)

Potential energy = 75460 J

Kinetic energy = 38500 J

Total energy = 113960 J

(b)

The site can be used to start a colony.

STEP-BY-STEP EXPLANATION:

Given:

Mass (m) = 770 kg

Velocity (v) = 10m/s

Height (h) = 10 m

(a)

We calculate in each case the kinetic and potential energy by means of their formulas

The total energy is the sum of both calculated energies:

(b)

Since the tsunami energy is less than the energy that can destroy the colony, then the site can support a permanent colony.