In laboratorio, versi in un tubo a U acqua da una estremità e olio dall'altra. Le densità dell'olio e dell'acqua sono, rispettivamente, 890 kg/m^3 e 1010 kg/m^3. L'altezza della colonna d'acqua è 18 cm. ▶ A che altezza arriva l'olio nell'altro ramo del tubo? ▶ Quanto vale la differenza fra i livelli superiori dell'acqua e dell'olio nei due rami?

Answer:C car

Explanation:

a) The flow rate will be Q = 84 cm³ per second.

b) The flow speed in the capillaries will be 0.028 cm /s.

The flow rate is defined as the volume of the fluid passing across the cross-section of the pipe in a unit of time.

To calculate the flow rate of blood in the aorta, we can use the equation:

Flow rate = Area x Velocity x Density

Where the area is the cross-sectional area of the aorta, the velocity is the flow speed of the blood in the aorta, and the density is the density of blood (p = 1.0 g/cm³).

Substituting the values we know, we get:

Flow rate = 2.0 cm²x 42 cm/s x 1.0 g/cm³

Flow rate = 84 g/s

Therefore, the flow rate of blood in the aorta is 84 grams per second.

b. According to the principle of continuity, the flow rate of blood must remain constant as it moves from the aorta to the capillaries. Therefore, we can use the equation:

Flow rate = Area x Velocity x Density

To calculate the flow speed in the capillaries, given the combined cross-sectional area of the capillaries.

We know that the flow rate in the capillaries must be the same as the flow rate in the aorta, which we calculated in part a:

Flow rate = 84 g/s

The combined cross-sectional area of the capillaries is given as 3.0 x 10³ cm². Substituting these values in the equation, we get:

84 g/s = 3.0 x 10³cm² x Velocity x 1.0 g/cm³

Solving for the velocity, we get:

Velocity = 84 g/s / (3.0 x 10³ cm² x 1.0 g/cm³)

Velocity = 0.028 cm/s

Therefore, the flow speed in the capillaries is 0.028 cm/s.

To know more about flow rate follow

https://brainly.com/question/11967592

#SPJ1

The letters JJ in a wheel designation size labeled 14 x 7 JJ refer to the shape of the flange area of the wheel. The letters represent a specific type of flange shape and do not refer to the speed rating, load rating, or tire conicity of the wheel. These ratings and designations are typically indicated separately on the wheel and tire.

In a wheel designation size labeled 14 x 7 JJ, the letters "JJ" refer to the shape of the flange area.
Here's a breakdown of the designation:
- 14: The wheel diameter in inches (14 inches)
- 7: The wheel width in inches (7 inches)
- JJ: The flange shape (JJ flange type)
The JJ flange type indicates a specific profile of the wheel's flange, which is designed to better retain the tire bead and accommodate certain tire types. This flange type is commonly used for high-performance and off-road vehicles.

learn more about off-road vehicles here: brainly.com/question/4809729

#SPJ11

Given function isv(t) = t³ +13t²+47t-35and time interval is 1≤t≤7. We have to calculate:

(a) Displacement

(b) Total Distance

(a) Displacement:

Displacement is defined as the shortest distance between initial and final points. We can find the displacement of a particle with the help of following formula:

Displacement = Final Position - Initial PositionHere, the particle moves along a straight line, and we don't know the initial and final position.  Thus, the displacement of the particle is 219 ft.(b) Total Distance:Total distance traveled by the particle is the sum of all the distances covered by it in different intervals.

Thus, we have two real roots of the given equation:t₁

≈ - 6.548t₂

≈ 0.215

Therefore, ∫|v(t)|dt = 309

As we have to find the total distance, we have to add both the cases. Therefore,

Total Distance =∫|v(t)|dt  [from 1 to 7]

=∫|v(t)|dt [from 1 to 7]

=∫|v(t)|dt (from 1 to 1.215) +|v(t)|dt (from 1.215 to 7) = 252 + 309= 561 ft Thus, the total distance traveled by the particle is 561 feet.

To know more about displacement, visit:

https://brainly.com/question/11934397

#SPJ11

Answer:

the answer is b i think

Answer:Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism.

Explanation:

The phenotype is the trait those genes express. ... Looking at the possible offspring, each box (or possible offspring) has two copies of the dominant gene. This means there is a 100% chance of the offspring having brown eyes, or being BB. It's important to note here that each box represents a possible offspring.

The applied force acting on the wagon is 3.04 N.

The direction of the applied force is east.

The net force acting on the wagon is Fa - Ff, which is equal to (2.4 kg)(1.2 m/s^2) + 1.22 N, or 3.04 N.

To determine the applied force, we need to use the equation for net force: ΣF = ma

where ΣF is the sum of all forces acting on the wagon, m is the mass of the wagon, and a is the acceleration of the wagon.

From the free-body diagram, we can see that the forces acting on the wagon are the applied force (Fa) in the direction of motion (east), and the frictional force (Ff) in the opposite direction (west):

So the net force equation becomes:

Fa - Ff = ma

Substituting the given values, we get:

Fa - 1.22 N = (2.4 kg)(1.2 m/s^2)

Simplifying and solving for Fa, we get:

Fa = (2.4 kg)(1.2 m/s^2) + 1.22 N

Fa = 3.04 N

Learn more about force here:

https://brainly.com/question/13191643

#SPJ1

to get weight multiply Mass by 9.8

weight =9.8x15=147N

Answer:

control group and experimental group

The change in potential energy when it drops from 20 ft is  -27.14 J.

The change in potential energy when it drops from 30 ft is  -40.71 J J.

The change in kinetic energy when it drops from 30 ft is  40.71 J J.

The speed of the objects when they hit the ground is 13.39 m/s.

The change in potential energy is calculated as follows;

ΔP.E = P.E(final) = P.E(initial)

ΔP.E = mghf - mghi

ΔP.E = mg(hf - hi)

where;

ΔP.E = (0.454 x 9.8) (0 - 6.1)

ΔP.E = -27.14 J

hi = 30 ft x 30.5 cm = 915 cm = 9.15 m

ΔP.E = (0.454 x 9.8) (0 - 9.15)

ΔP.E = -40.71 J

Apply the principle of conservation of energy.

P.Ei + K.Ei = P.Ef + K.Ef

P.Ei - P.Ef = K.Ef - K.Ei

- (P.Ef - P.Ei) = K.Ef - K.Ei

- ΔP.E = ΔK.E

- (-40.71 J ) = ΔK.E

40.71 J  = ΔK.E

v = √2gh

v = √(2 x 9.8 x 9.15)

v = 13.39 m/s

Learn more about conservation of energy here: https://brainly.com/question/166559

#SPJ1

48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

To know more about velocity and conversions,

https://brainly.com/question/21552920

48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To learn more about escape velocity click:

brainly.com/question/29596174

#SPJ1  

Answer:

Car A has a velocity of 40 km/hr  west.

Explanation:

The velocity of an object is a vector quantity. It has both magnitudes as well as direction.

Arrows are used to show direction.

Car A is moving towards west. Car B is moving towards east-south direction. Car C is moving towards South direction. Car E is moving towards North direction.

So, the correct option is (a) i.e. Car A has a velocity of 40 km/hr  west.

A reasonable unit to measure the length of a rice grain is millimeters (mm).

Rice grains are relatively small, and millimeters provide a suitable level of precision for measuring their length. Using millimeters allows for more accurate measurements and consistency in assessing the size of rice grains. Various tools, such as calipers or rulers with millimeter markings, can be used to measure the length of rice grains.

This unit is commonly used in scientific studies, culinary applications, and quality control assessments of rice. It provides a practical and standardized way to quantify the length of rice grains, aiding in research, production, and cooking processes.

learn more about "millimeters ":- https://brainly.com/question/30959895

#SPJ11

The resistivity of a cylindrical material wire whose whose length has a resistance of 2.0 ohms the diameter of a wire is 0.5 mm​ is given as ρ = (2.0 Ω)\((1.96 x 10^-7 m^2) / L\)

The resistivity (ρ) of a cylindrical wire can be calculated using the formula

ρ = RA / L

where:

R is the resistance of the wire,

A is the cross-sectional area of the wire, and

L is the length of the wire.

To calculate the cross-sectional area of the wire from its diameter

The diameter of the wire is given as 0.5 mm.

The radius (r) of the wire is therefore

r = d/2 = 0.5 mm / 2 = 0.25 mm

r = 0.25 mm = 0.00025 m

The cross-sectional area (A) of the wire is then:

\(A = \pi r^2 = \pi (0.00025 m)^2 = 1.96 x 10^-7 m^2\)

ρ = RA / L

ρ = R(A/L)

ρ = (2.0 Ω)\((1.96 x 10^-7 m^2) / L\)

To calculate the resistivity, information on the length of the wire must be available. Once this is available , we can substitute for it in the equation.

Learn more on resistivity on https://brainly.com/question/13735984

#SPJ1

Hey there mate ;),

Graph Attached. Please check.

Now displacement area:-

\(Area = \frac{(10s - 0s)(30ms - 20ms)}{2} \)

\(→Area = \frac{100m}{2} \\ →Area = 50m\)

So, area of displacement is 50 m

Answer:

The answer to the question is highlighted in the box

According to the research, the correct option is moments of both forces are equal. In the principle of moments, both moments of forces are equal.

It states that the moment of a force about a point is equal to the sum of the moments of the components of the force about the point where two forces are equivalent when their effects on a rigid body are the same, that is, produce the same moment.

In this sense, two forces acting on an object are known as a couple whose torques about a point cause the object they act on to tend to rotate.

Therefore, we can conclude that following the equilibrium condition in the principle of moments, a structure of an object has to respond to the action of a moment with another of the same value and in the opposite direction.

Learn more about the principle of moments here: https://brainly.com/question/26117248

#SPJ1

A slider mechanism is a concept used in wheelchairs to allow for smooth and efficient movement of the seat. It involves a sliding mechanism that enables the user to adjust the position of the seat along the wheelchair frame, providing flexibility and comfort.

The slider mechanism concept in wheelchairs revolves around the idea of a sliding seat that can be adjusted forward or backward along the frame of the wheelchair. This mechanism allows the user to modify their seating position to achieve optimal comfort, balance, and posture.

Typically, the slider mechanism consists of a set of rails or tracks installed on the wheelchair frame, with the seat attached to a carriage that slides along these tracks. The sliding mechanism can be manual, where the user manually pushes or pulls the seat to adjust its position, or it can be powered, using electric motors or hydraulics for easier adjustment.

The benefits of the slider mechanism are numerous. It allows wheelchair users to modify their seating position to accommodate specific activities or preferences, such as reaching a table or desk, transferring in and out of the wheelchair, or adjusting weight distribution for better balance. The sliding mechanism also helps in preventing pressure sores and discomfort by allowing users to periodically change their seating position and relieve pressure points.

Overall, the slider mechanism concept on a wheelchair enhances the user's mobility and comfort by providing an adjustable seating position. It offers flexibility, adaptability, and improved ergonomics, enabling wheelchair users to customize their experience based on their individual needs and preferences.

To learn more about wheelchair visit:

brainly.com/question/32897347

#SPJ11

If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.

It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.

Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.

To know more about static frictional visit :-

https://brainly.com/question/13000653

#SPJ1

A star of the apparent magnitude of +1 would appear farther away than a star of the apparent magnitude of +2. Hence, option B is correct.

In astronomy, a star is a brilliant plasma spheroid that is held together through gravity. The Sun is the planet's closest star. The human eye can see a great number of other stars at night, but due to our planet's size, they seem alike stationary points of light.

Numerous of the shining stars were given names, whereas the most notable stars have been grouped into constellations and asterisms. The known stars have been recognized and given standard designations in star inventories that astronomers have put together.

The birth of a star is caused by the gravitational attraction of a gaseous nebula made largely of hydrogen, helium, and traces of transition metals. Its overall mass is the primary factor influencing how it will develop and end up.

To know more about Star:

https://brainly.com/question/7379319

#SPJ2

The voltage drop across each capacitor is 134 V.

Absent an external voltage source, a capacitor is nothing more than a neutral conductor (before charging). But a capacitor starts to store electric charges when an external voltage is placed across it. Currently, the electric charge on a capacitor is precisely proportional to the voltage across it. A change in charge applied to a capacitor causes a change in the voltage across it. Therefore, the voltage across a capacitor rises as it charges. The voltage across the capacitor becomes constant once the capacitor has fully charged. The capacitor will now start to discharge if we remove the external battery. The capacitor's voltage across it drops as it is being discharged, and after a while, it reaches zero.

Given,

C = 4.00pF          

C₁ = 8.00pF

V = 400 V

C(eq) = 1/ (114 + 118)

        = 2.66667 pF

Q = C * V

Q = 2.66667 * 10⁻¹² F *  400 V

Q₁ = 1.07 nC

Q₂ = 1.07 nC

V = Q/C = 1.07 * 10⁻⁹ C/ 4.00 * 10⁻¹² F

V₁ = 267.0 V

V₂= Q/C

   = 1.07 * 10⁻⁹ C / 8.00 * 10⁻¹² F

V₂ = 133.0 V

Thus, the voltage drop is, V₁ - V₂ = 267.0 - 133.0

Voltage drop = 134 V

Learn more about the capacitors here:

https://brainly.com/question/17176550

#SPJ4

Answer:

Explanation:

Some of the factors affecting intensity are: The energetic intensity of the source (the initial volume). The distance from the source (the volume at any point along the path). Any modifying elements in the light path (air, clouds, filters, reflectors, etc.) The factors affecting the intensity of light are diffraction.

Light has three properties: Wavelength, speed, and amplitude. The wavelength determines the type of light (color, etc.). Speed is determined by whether light passes through a vacuum or some material. The more photons emitted per unit time, the greater the intensity of the light. Directly, it is the power that determines the brightness of a bulb. That is why light bulbs have a power rating, i.e. a 60W bulb is enough to light a typical bedroom. But power is determined by the current and voltage which, in turn, is determined by the current.

Answer:

we call a foreign born resident of us a citizen

According to the given statement , the acceleration of the sphere at the instant when its speed is 27.0 m/s.

We can use the principles of electrostatics and kinematics.  a = [(9.00 x 10⁹ N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)²] / (4.00 x 10⁻³ kg).

1. Determine the electric force between the two charges:
  - The electric force between two charges can be calculated using Coulomb's Law:

F = k * |q1 * q2| / r².
  - In this case, q1 = 5.00 μC and q2 = +2.00 μC. The distance between them, r, is the horizontal distance of 8.00 cm (which is 0.08 m).
  - The constant k is 9.00 x 10⁹ N * m^2 / C².
  - Plugging in the values, we get F = (9.00 x 10^9 N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)².

2. Calculate the net force acting on the sphere:
  - At any instant, the net force acting on the sphere is the sum of the electric force and the force due to gravity.
  - However, in this case, gravity can be neglected, as stated in the question.
  - Therefore, the net force acting on the sphere is equal to the electric force between the two charges.

3. Calculate the mass of the sphere:
  - The mass of the sphere is given as 4.00 x 10⁻³ kg.

4. Apply Newton's second law:
  - Newton's second law states that the net force acting on an object is equal to the product of its mass and acceleration: Fnet = m * a.
  - In this case, the net force acting on the sphere is the electric force between the charges.
  - Plugging in the values, we get (9.00 x 10⁹ N * m^2 / C²) * |5.00 μC * 2.00 μC| / (0.08 m)² = (4.00 x 10⁻³ kg) * a.

5. Solve for the acceleration:
  - Rearranging the equation, we have a = [(9.00 x 10⁹ N * m² / C²) * |5.00 μC * 2.00 μC| / (0.08 m)²] / (4.00 x 10⁻³ kg).
  - Evaluating the expression, we find the value of acceleration.

By following these steps, you can find the acceleration of the sphere at the instant when its speed is 27.0 m/s.

To more about electrostatics visit:

https://brainly.com/question/14889552

#SPJ11

The angle between the incident ray and the reflected ray of the laser beam is 86°.

When a laser beam strikes a plane mirror, the angle between the incident ray and the reflected ray is equal to the angle of incidence. This is known as the law of reflection. In this case, the laser beam strikes the mirror's reflecting surface with an angle of incidence of 43°, so the angle of the reflected ray will also be 43°. This means that the reflected ray will bounce off the mirror at an angle of 43° away from the incident ray. This law of reflection is important in understanding how light interacts with surfaces and can be used in various applications, such as in telescopes and cameras.

In this case, the angle of incidence is 43°, so the angle of reflection is also 43°. To find the angle between the incident ray and the reflected ray, simply add the two angles together: 43° + 43° = 86°. Therefore, the angle between the incident ray and the reflected ray is 86°.

More on reflection angles: https://brainly.com/question/14270113

#SPJ11

The total angular momentum of the child plus the merry-go-round remains constant.

Angular momentum is a measure of an object's rotational motion and is equal to its mass times its velocity around a point. In this scenario, the child is walking towards the center of the rotating merry-go-round, thus changing its velocity.

However, as there is no external force acting on the system (child and merry-go-round), the total angular momentum must remain constant as per the law of conservation of angular momentum.

You can learn more about Angular momentum at

https://brainly.com/question/4126751

#SPJ4

Answer:

27J

Explanation:

Work done =force×distance

Therefore

Work done =18×1.5

Work done =27J

The velocity of sphere A after the collision is 1.67 m/s to the right. The kinetic energy of the system of spheres A and B after the first collision is 7.14 J.

p initial = m A * v A + m B * v B

p initial = (0.600 kg)(4.00 m/s) + (1.80 kg)(2.00 m/s)

p initial = 3.60 kg m/s

After the collision, the momentum of the system is:

p final = m A * v A' + m B * v B'

p initial = p final

m A * v A + m B * v B = m A * v A' + m B * v B'

Substituting the given values and solving for v A', we get:

v A' = (m A * v A + m B * v B - m B * Δv B) / m A

v A' = (0.600 kg)(4.00 m/s) + (1.80 kg)(2.00 m/s) - (1.80 kg)(1.00 m/s) / 0.600 kg

v A' = 1.67 m/s to the right

The kinetic energy of the system after the collision, we can use the formula:

K AB(ii) = (1/2) * m A * v A'²  + (1/2) * m B * v B'²

Substituting the given values, we get:

K AB(ii) = (1/2)(0.600 kg)(1.67 m/s)² + (1/2)(1.80 kg)(3.00 m/s)²

K AB(ii) = 7.14 J

The energy an item possesses as a result of its motion is known as kinetic energy. It is a scalar quantity and depends on both the mass and velocity of the object. The formula for calculating kinetic energy is KE = 1/2 mv^2, where KE represents kinetic energy, m represents the mass of the object, and v represents the velocity of the object.

As an object moves, its kinetic energy increases proportionally to its speed. The greater the mass of the object or the faster its velocity, the more kinetic energy it possesses. Conversely, as an object comes to a stop, its kinetic energy decreases and is converted to other forms of energy, such as potential energy or heat. Kinetic energy is a fundamental concept in physics and is important in understanding many natural phenomena.

To learn more about Kinetic energy visit here:

brainly.com/question/26472013

#SPJ4

Complete Question:-

Find the kinetic energy K AB(ii) of the system of spheres A and B after the first collision. Express your answer with the appropriate units. View Available Hint(s) Sphere A. of mass 0.600 kg, is initially moving to the right at 4.00 m/s. Sphere B, of mass 1.80 kg, is initially to the right of sphere A and moving to the right at 2.00 m/s. After the two spheres collide, sphere B is moving at 3.00 m/s in the same direction as before.

(a) What is the velocity (magnitude and direction) of sphere A after this collision?

(b) Is this collision elastic or inelastic?

(c) Sphere B then has an off-center collision with sphere C, which has mass 1.60 kg and is initially at rest. After this collision, sphere B is moving at 19.0° to its initial direction at 1.80 m/s. What is the velocity ( magnitude and direction) of sphere C after this collision?

(d) What is the impulse (magnitude and direction) imparted to sphere B by sphere C when they collide?

(e) Is this second collision elastic or inelastic?

(f) What is the velocity (magnitude and direction) of the center of mass of the system of three spheres (A, B, and C) after the second collision?

No external forces act on any of the spheres in this problem. ?

Answer:

18

Explanation:

12 - 5 + 8 = 15

12 - 8 = 4

7 - 4 = 3

15 + 3 = 18