Help me please to solve this
7. The standard weights (dhaks) and meter scales of the shops in the market are verified in every two years by the department of measurement of Nepal, Why? ​

Answer:

B

Explanation:

You need a specific force to change the momentum of something.

Hope this helps!

When the spring is then cut into two halves and one of the halves is compressed by 0.20 m, the potential energy in the spring is 10 J.

The spring constant of the spring is the energy stored in the spring due to its elasticity.

E = ¹/₂kx²

where;

k = 2E / x²

k = ( 2 x 10 J ) / ( 0.2 m )

k = 500 N/m

When the spring is then cut into two halves and one of the halves is compressed by 0.20 m, the potential energy in the spring is calculated as;

E =  ¹/₂kx²

E =  ¹/₂(500)(0.2)²

E = 10 J

Learn more about elastic potential energy here: https://brainly.com/question/19024537

#SPJ1

Answer:KE

Explanation:

If no external forces act on a moving object, it will continue moving at the same speed. This is known as Newton's First Law of Motion, also called the law of inertia.                                                                                                                                            

In the absence of any external forces, an object in motion will continue moving with a constant velocity. This means that the object will not slow down or speed up unless acted upon by an external force.
If no external forces act on a moving object, it will follow Newton's first law of motion, also known as the law of inertia. According to this law, an object in motion will continue moving at the same speed and in the same direction unless acted upon by an external force. Therefore, the correct answer to your question is option (a): the object will continue moving at the same speed. This law explains the natural tendency of objects to maintain their current state of motion, whether at rest or in motion.

Learn more about Newton's First Law of Motion here:
https://brainly.com/question/29775827

#SPJ11

Answer:

m v^2 / R = G M m / R^2       gravitational attraction = centripetal force

M = v^2 R / G       solving for M

period = 6 h 25 min = (6 * 3600 + 25 * 60) sec = 23,100 sec = T

v = 2 pi R / T

M = 4 pi^2 R^3 / (G T^2)

M = 39.5 * (8.6E7)^3 / (6.67E-11 * 2.31E4^2)

M = 39.5 * 636 / (6.67 * 5.34) * 10^24

M = 7.05 * 10^26 kg

The true statement about mitosis and meiosis is that DNA replication occurs before the division of the nucleus.

option B.

Meiosis is the type of cell division that creates egg and sperm cells.

Mitosis on other hand is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

The similarity between meiosis and mitosis is that both mitosis and meiosis take place in the cell nuclei, which can be observed under a microscope. So both occurs in the nucleus and DNA replication must occur before the division of the nucleus.

Learn more about mitosis and meiosis here: https://brainly.com/question/2197637

#SPJ1

Answer:

Thermosphere A,B

Mesosphere B,C,D

Stratosphere D,E,F

Troposphere G

Hope this helps please give me brainliest!

God bless :)

The operating speed of a fluid power system is adjusted by the flow control valve. Flow control valves are used in fluid power systems to adjust the speed of actuator operations. They function by limiting the flow of fluid in the system.

They also act as a pressure regulator, ensuring that the actuator receives only the fluid it requires to execute its task. The fluid flow in a hydraulic system can be adjusted or regulated using a flow control valve. The flow control valve, or metering valve, is a device that regulates the speed of fluid flow to the actuator. It is used in a variety of hydraulic systems, from braking systems to production line machinery.

The flow control valve is a critical component in a hydraulic system. It is a simple device that regulates fluid flow. It regulates the speed of fluid flow through the system to maintain the desired speed of actuator movement. This guarantees that the actuator does not move too quickly or too slowly and that the system is efficient and reliable.

To know more about fluid power system, refer

https://brainly.com/question/14967131

#SPJ11

The terms are paired with their correct definitions as shown above.

Given is to match the terms with the correct definition.

We can write the pairs as -

{ 1 } → { b }

{ 2 } → { f }

{ 3 } → { a }

{ 4 } → { d }

{ 5 } → { e }

{ 1 } → { c }

Therefore, the terms are paired with their correct definitions as shown above.

To solve more questions on physics terms, visit the link-

brainly.com/question/29014197

#SPJ1

Answer:

the answer is 4.649 liters

Answer: The answer is 4.56L

Vitalpando Winery will need to promise an annual dividend of $330,000 if investors demand a return of 11% on their preferred stock. The dividend amounts for the other required return rates are as follows: $450,000 for 15%, $240,000 for 8%, $300,000 for 10%, $180,000 for 6%, and $90,000 for 3%.

To determine the annual dividend required to satisfy the investors' demands for different return rates, we need to multiply the number of shares by the desired return rate. In this case, the winery wants to sell one million shares of preferred stock.

For option (a), where the desired return rate is 11%, the calculation would be: $30,000,000 (total funds required) multiplied by 0.11 (11% expressed as a decimal) divided by 1,000,000 (number of shares). This results in an annual dividend of $330,000.

Similarly, for the other return rates, the calculations are as follows:

(b) $30,000,000 x 0.15 / 1,000,000 = $450,000

(c) $30,000,000 x 0.08 / 1,000,000 = $240,000

(d) $30,000,000 x 0.10 / 1,000,000 = $300,000

(e) $30,000,000 x 0.06 / 1,000,000 = $180,000

(f) $30,000,000 x 0.03 / 1,000,000 = $90,000

Therefore, the annual dividends required to satisfy the investors' demands for the different return rates are as stated above.

Learn more about dividend here:

https://brainly.com/question/30792099

#SPJ11

The control in the experiment is option B. The group that is given no shock.

The method utilized by the researcher in scientific study to reduce the impact of unimportant factors is known as experimental control. The power of the independent variable to alter the dependent variable is further strengthened by experimental control. 9 Nov 2021

A controlled experiment is a scientific test carried out under predetermined circumstances in which only one (or a small number of) variables are altered at a time while all other variables are maintained constant.

Researchers use experimental controls to reduce the impact of unrelated experience and environmental factors, as well as to strengthen the conclusion that changes in the dependent variable are caused by the independent variable (the ability to infer causality).

Hence, option B is correct as it is not receiving any special treatment in the experiment.

Learn more about experimental control from

https://brainly.com/question/24708013
#SPJ1

The the distance between the asteroid and the earth's surface measured in the earth's radius is 1.82 R

What are the Asteroids:

here,

An asteroid experiences acceleration on earth's orbit which is 8.0 times smaller than it on the earth surface.

Free fall acceleration of Asteroid:

so,

g' = GM /(R + x)^2 ------1

g = GM / R^2

g' = 1/8 ( GM / R^2 ) -------1

where G is gravitational constant

M is mass of earth

R is earth's radius

comparing both equations 1 and 2

GM /(R + x)^2 =  1/8 ( GM / R^2 )

8 R^2 = (R + x)^2

2√2 * R = R + x

x = R (2√2 - 1)

x = 1.82*R

hence, The the distance between the asteroid and the earth's surface measured in the earth's radius is 1.82*R

Learn more about earth's radius here:

https://brainly.com/question/4865936

#SPJ4

To find the volume of the solid obtained by rotating the region, we will need some more information, such as the function or shape of the region, the axis of rotation, and the interval of rotation. The terms you should be familiar with are:
1. Volume: The measure of the amount of space occupied by a solid figure.
2. Solid: A three-dimensional geometric figure.
3. Rotation: Turning a shape around a fixed point or axis.
4. Region: An area enclosed by a curve or boundaries.
5. Axis of rotation: The line around which the region is rotated to form the solid.
Once you provide these details, I'd be happy to help you find the volume of the solid obtained by rotating the region.

For more question like Volume visit the link below:

https://brainly.com/question/30785714

#SPJ11

The gravitational force between the satellite and Earth is 9.8N.

Gravitational Force:

Every object in this universe attracts other objects to it by a force called gravity. Gravity is therefore the study of the interaction between two masses. Of the two masses, the heavier is called the source mass and the lighter is called the test mass.

Gravity is a central force that depends only on the position of the test mass relative to the source mass and always acts along the line connecting the centers of the two masses.

Given that,

Mass of the body, m = 1 kg

Mass of the Earth, M = 6× 10²⁴kg

The radius of the Earth, R = 6.4×10⁶m

According to the law of universal gravitation, the magnitude of the gravitational force (F) between the Earth and a satellite is given by,

                  \(F=G\frac{M*m}{R^{2} }\)

where G=6.67×10⁻¹¹ Nm²/kg² is the universal gravitational constant.

Hence, the magnitude of the gravitational force (F) between the earth and the body is given by,

\(F=G\frac{M*m}{R^{2} }=\frac{6.67*10^{-11} *6*1*10^{24} }{(6.4*10^6)^{2} }\)  

= 9.77 N ≈ 9.8 N

Learn more about force:

https://brainly.com/question/13191643

#SPJ4

The course of action that has the highest EMV for the accompanying tree diagram is action B.

The total EMV resulting in each action is calculated by using the values given in the tree diagram as follows;

The total EMV resulting in action A is as follows;

EMV = 0 + 60 + 90 + 40 + 44 + 60

EMV = 294

The total EMV resulting in action B  is as follows;

EMV = 45 + 45 + 99 + 40 + 50 + 30 + 40 + 50

EMV = 399

Thus, from the values obtained in the calculations above, we can conclude that the course of action that has the highest EMV for the accompanying tree diagram is action B.

Learn more about tree diagram  here: https://brainly.com/question/24391505

#SPJ4

Answer:

a) P + Q = 2 P = 10 N    P = Q = 5 N      each exerts the same force

b)  P x1 = Q x2      if x1 and x2 are not equal (torque about pivot point)

50 Q = 150 P  or Q = 3 P      balancing torques

Since P + Q = 10       Q = 7.5 N and P = 2.5 N

c) take torques about P

100 * 10 + 100 * 10 = 200 * Q    

Q = 10 N        P + Q = 20 N upward and the force on the fulcrum in the middle is 10 + 10 = 20 N down (10 N for shelf and 10 N for book)      

Answer:

45

Explanation:

because

The magnitude of the force that the baseball exerts on the bat is 500 N.

The given parameters;

According to Newton's third law of motion, action and reaction are equal and opposite. That is, when an object A exerts a certain force on another object B, the reaction of object B is equal to the magnitude of the force exerted by object A but in opposite direction.

Let the force the baseball exerts on the bat = F₂

then, from Newton's third law, we will have the following;

F₁ = -F₂

500 = -F₂

-500 N = F₂ (500 N is magnitude while the negative sign is the direction)

Thus, the magnitude of the force that the baseball exerts on the bat is 500 N.

Learn more here:https://brainly.com/question/23772134

Answer:

  zero

Explanation:

You want to know the x-component of the normal force on a 5.00 kg crate on a 21.0° hill, given that the x-axis is parallel to the plane of the hill.

The normal force is perpendicular to the x-axis in this scenario. There is no component of the normal force that is in the direction of the x-axis.

The x-component of the normal force is zero.

__

Additional comment

The x-component of the force due to gravity is -17.6 N. The normal force is 45.7 N.

Based on the principle of moments, the distance from the end of the table should the box be placed before the board begins to tilt is 17.5 cm.

The distance from the end of the table should the box be placed before the board begins to tilt is determined from the principle of moments as follows:

sum of clockwise moments = sum of anticlockwise moments

The block is 30 cm on the table and 20 cm outside it.

The downward force acting on the left-hand side of the box

= 3/5 x 7 = 4.2

This force acts at the center of gravity, 15 cm or 0.15 m away.

Therefore, anticlockwise moments o the left side =4.2 x 0.15 = 0.63 J

Also, the clockwise moment on the right side = Force × distance

Force = 2/5 x 7 = 2.8 N

Distance from the center of gravity = 10 cm or 0.10 m away.

the clockwise moment on the right side due to the board = 2.8 x 0.1 = 0.28.

The moment due to the box with a weight of 2kg at a distance of x meters will be:

the total clockwise moment on the right side = 0.28 + 2x.

When the board is just about to tilt:

0.63 = 0.28 + 2x

2x = 0.63 - 0.28

x = 0.175m or 17.5cm

To look more about principle of moment click here

brainly.com/question/28977824

#SPJ4

(a) The drum takes 2.807 seconds to come to a stop.

(b) The drum rotates through an angle of 48.75 radians before coming to rest.

(a) To find the time it takes for the drum to stop, we can use the formula:

angular acceleration = (change in angular velocity) / time

Rearranging, we get:

time = (change in angular velocity) / angular acceleration

Substituting the given values, we get:

time = 17.4 / 6.21 = 2.807 seconds

So the drum takes 2.807 seconds to come to a stop.

(b) To find the angle through which the drum rotates before coming to rest, we can use the formula:

final angular velocity^2 = initial angular velocity^2 + 2 * angular acceleration * angle

We know that the final angular velocity is zero, the initial angular velocity is 17.4 rad/s, and the angular acceleration is -6.21 rad/s^2 (negative because the drum is slowing down). Substituting these values, we get:

0^2 = 17.4^2 + 2 * (-6.21) * angle

Solving for the angle, we get:

angle = 48.75 radians

So the drum rotates through an angle of 48.75 radians before coming to rest.

Learn more about angular acceleration here:

https://brainly.com/question/29428475

#SPJ11

Answer:

Release

Explanation:

The water is heated until

Answer:

To add two non-collinear vectors, you first need to draw them on a coordinate plane so that their tails are at the same point. Then, you can use the "tip-to-tail" method to add the vectors. This involves drawing a vector from the tail of the first vector to the tip of the second vector, and this new vector is the sum of the two original vectors.

For example, if you have two non-collinear vectors, A and B, and you want to find their sum, you would first draw them on a coordinate plane so that their tails are at the same point. Then, you would draw a vector from the tail of vector A to the tip of vector B. This new vector, which is the sum of vectors A and B, is the result of adding the two vectors.

To calculate the sum of the vectors using the tip-to-tail method, you would simply add the x and y components of the two vectors separately. For example, if vector A has an x component of 3 and a y component of 4, and vector B has an x component of 5 and a y component of 6, the sum of the two vectors would be a vector with an x component of 8 and a y component of 10.

It's important to note that the sum of two non-collinear vectors is not necessarily a non-collinear vector. The sum of two non-collinear vectors can be a non-collinear vector, a collinear vector, or a zero vector (if the two original vectors are opposites of each other).

To make real ice cream, the ice cream must contain a minimum of 10% milk fat.

Ice cream is a delicious and popular dessert enjoyed by people all over the world. It is made by mixing cream, sugar, and other ingredients and then freezing the mixture until it becomes thick and creamy. Ice cream is defined as a frozen food product that is made from a mixture of milk, cream, sugar, and flavorings.

It must contain at least 10% milk fat to be considered real ice cream. The milk fat is what gives ice cream its creamy texture and rich flavor. Milk fat is an essential ingredient in ice cream because it gives it the smooth, creamy texture that people love. Without enough milk fat, the ice cream will be thin, icy, and not as flavorful.

Milk fat is a key ingredient in ice cream and is what gives it its signature taste and texture. Most ice cream makers use a combination of milk and cream to achieve the desired milk fat content. Some ice cream makers also add other ingredients like eggs or stabilizers to help improve the texture and consistency of the ice cream.

Ice cream is a popular dessert that has been enjoyed for centuries. By following the proper recipe and using high-quality ingredients like milk fat, you can make delicious and creamy ice cream at home.

To know more about milk fat refer here:

https://brainly.com/question/19589850#

#SPJ11

The emission spectrum for the collection of quantum harmonic oscillators can be determined by considering the energy differences between the levels. Given that the spacing between levels is 0.4 eV, the energy differences between adjacent levels are also 0.4 eV.

To find the complete emission spectrum, we need to consider all possible energy transitions between the levels. Starting from the ground state, the transitions to higher energy levels will have energies of 0.4 eV, 0.8 eV, and 1.2 eV, respectively.

Thus, the emission spectrum will consist of photons with energies of 0.4 eV, 0.8 eV, and 1.2 eV. These energies correspond to wavelengths of approximately 3.10 μm, 1.55 μm, and 1.03 μm, respectively.

The emission spectrum for the system of quantum harmonic oscillators includes photon energies of 0.4 eV, 0.8 eV, and 1.2 eV, which correspond to infrared wavelengths.

Learn more about "emission spectrum" here:

brainly.com/question/31086638

#SPJ11

The sentences that describe examples of acceleration are: B. A batter swings a bat to hit a ball.D. A runner slows down after finishing a race.

In both cases, there is a change in velocity, which indicates acceleration. In sentence B, the batter is exerting force to change the direction and speed of the bat. In sentence D, the runner is decelerating or slowing down after crossing the finish line. "Finishing" typically refers to the completion or conclusion of an activity or task. It implies reaching the end or final stage of something. In different contexts, "finishing" can have various meanings. For example: Finishing a race: This refers to crossing the finish line or completing a race, such as a running race, swimming race, or cycling race. Finishing a project: This implies completing all the required tasks and reaching the end goal of a project, whether it's a work-related project, school assignment, or personal endeavor.

Learn more about ball here:

https://brainly.com/question/13315889

#SPJ11

The work done by the torque to stop the wheel is -1918 J.

The given parameters are:
- Wheel radius (r): 15 cm = 0.15 m
- Rotational inertia (I): 2.3 kg·\(m^{2}\)
- Angular velocity (ω): 6.5 revolutions per second = 6.5 * 2π rad/s ≈ 40.84 rad/s

To find the work done by the torque to stop the wheel, we can use the rotational work-energy theorem: W = 0.5 * I * (ω_\(f^{2}\) - ω_\(i^{2}\)), where W is the work done, ω_f is the final angular velocity (0 rad/s), and ω_i is the initial angular velocity.

Plugging in the given values:
W = 0.5 * 2.3 kg·\(m^{2}\) * (0^2 - 40.84 rad/s^2)
W = 0.5 * 2.3 kg·\(m^{2}\) * (-1667.86 rad^2/s^2)
W ≈ -1918.24 J

Since work is done against the frictional force to bring the wheel to a stop, the work done is negative. Therefore, the work done by the torque to stop the wheel is most nearly -1918 J.

Know more about torque here:

https://brainly.com/question/17512177

#SPJ11

Answer:

Things like cloth and softmaterial, pliable, or porous materials

Explanation:

Answer:

Porous absorbers e.g paper, cardboards

Answer:

12761

Explanation: