two similar razor blades were placed on a wooden block and the other on an iron block. it was observed that the razor blade on the wooden block is attracted by the magnet while that on the iron block was not. explain

The change in height of the mercury column for a temperature change of 26 °C is 0.000175 cm.

Mercury is the smallest and innermost planet in the Solar System. It is about one-third the size of the Earth and has no moons. It has a very thin atmosphere consisting almost entirely of a small amount of helium and sodium. Mercury's surface is heavily cratered and is similar in appearance to Earth's Moon. It has a very large iron core that makes up most of its mass.

The change in height of the mercury column is given by the equation:
Δh = V * β * ΔT
Where V is the volume of the mercury, β is the volume expansion coefficient of mercury, and ΔT is the change in temperature.
The volume of the mercury can be calculated as follows:
V = π * r² * h
Where r is the radius of the bulb and h is the height of the mercury column.
Substituting these values into the equation, we get:
Δh = π * (0.37/2)² * 0.0057 * 0.000182 * 26
Δh = 0.000175 cm
Therefore, the change in height of the mercury column for a temperature change of 26 °C is 0.000175 cm.

To learn more about mercury
https://brainly.com/question/29321317
#SPJ1

Answer:

a) The velocity of the object as a function of time, v(t) is 2·b·t

b) The acceleration of the function of time, a(t) is 2·b

c) The time at which the object is at the flagpole is t = √(c/b)

Explanation:

The function that gives the position of the object north of the flagpole, x(t) is presented as follows;

x(t) = b·t² - c (b and c are constants)

a) The velocity of the object as a function of time, v(t), is derived as follows

v(t) = x'(t) = d(b·t² - c)/dt = 2·b·t

The velocity of the object as a function of time, v(t) = 2·b·t

b) The acceleration of the function of time, a(t) = v'(t) = d(2·b·t)/dt = 2·b

c) The time at which the object is at the flagpole is given by the x-intercept of the function, where x(t) = 0, as follows;

At the x-intercept, we have, x(t) = 0 and x(t) = b·t² - c

∴ 0 = b·t² - c, which gives

b·t² = c

t² = c/b

t = ±√(c/b), we reject the negative value to get;

The time at which the object is at the flagpole, t = √(c/b).

The correct statement about the forces acting on a car moving at a constant speed along a straight line is: A. The net force acting on the car from all directions is zero.

The correct answer is A.

The net force acting on the car from all directions is zero. This is because the car is moving at a constant speed, which means that the forces acting on it must be balanced. If there was an unbalanced force, the car's speed would change. Therefore, the net force acting on the car is zero.

When a car is moving at a constant speed, it is not accelerating. According to Newton's first law of motion, an object in motion will stay in motion at a constant velocity unless acted upon by an unbalanced force. In this case, since the car is moving at a constant speed, the net force acting on it is zero. This means that the forces acting on the car, such as friction and air resistance, are balanced and do not cause any change in the car's velocity.

To know more about force visit:

https://brainly.com/question/13191643

#SPJ11

The set {1,{2},{3}} contains three elements: 1, {2}, and {3}. The element {2} is a set that contains the element 2. However, the element {2} is not itself an element of the set {1,{2},{3}}.

To be an element of a set, an object must be contained directly within the set. In this case, the object {2} is not contained directly within the set {1,{2},{3}}. Instead, it is contained within the set {2}. Therefore, {2} is not an element of the set {1,{2},{3}}.

Here is another way to think about it. If we were to write out the set {1,{2},{3}} in list form, it would look like this:

1, {2}, {3}

The element {2} is not in this list. It is only in the set {2}, which is itself an element of the set {1,{2},{3}}.

Learn more about element here : brainly.com/question/31950312

#SPJ11

Answer:

Favorable sites include the tops of smooth, rounded hills; open plains and water; and mountain gaps that funnel and intensify wind. Wind resources are generally more favorable for electricity generation at higher elevations above the earth's surface

This method will only determine the average speed, not the final speed. This is wrong with Student 1's method for determining final speed.

Speed is a rate of change of distance with respect to time. i.e. v =dx÷dt. Speed can also be defined as distance over time i.e. speed= distance ÷ time it is denoted by v and its SI unit is m/s. it is a scalar quantity. i.e. it has only magnitude not direction. ( velocity is a vector quantity, it has both magnitude and direction. when we define velocity, we should know about its direction) Speed shows how much distance can be traveled in unit time. As speed is scalar quantity it has nothing to do with the direction. student 1 has not considered the height and angle hence it tells about average velocity not the final velocity.

To know more about Speed :

https://brainly.com/question/30462853

#SPJ1.

Answer:

6.75J

Explanation:

U=1/2KΔx²

U=0.5* 150*0.30^2

The missing word here is Asthenosphere.

The convection in the asthenosphere directly propels the tectonic plates of the earth.

Did you know that the asthenosphere is thought to remain malleable because of heat from deep within the Earth? It is thought to be lubricating the earth's tectonic plates' undersides and enabling movement.

The older, denser portions of the lithosphere that are dragged downward in subduction zones are stored in the asthenosphere, according to the theory of plate tectonics.

The lithosphere above is stressed by convection currents, and the cracking that frequently results manifests as earthquakes.

Magma is forced upward through volcanic vents and spreading centers by convection currents produced within the asthenosphere, which also results in the formation of new crust.

Learn why properties of the asthenosphere are important: https://brainly.com/question/11484043

#SPJ4

A property that can be observed without changing the identity of a substance is a Physical Property.

A physical property is a property that can be observed or measured without changing the composition of the substance. They are used to observe and describe matter. Texture, color, smell. Melting point, boiling point, density, solubility, polarity, electrical conductivity, ductility, ductility, luster, sound intensity, etc., are some examples of physical properties.

Physical properties are often characterized as strength and general properties. Intensive properties do not depend on the size or extent of the system, nor on the amount of matter in the object, while extensive properties exhibit an additive relationship. These classifications are generally valid only if the smaller subdivisions of the sample do not interact in a physical or chemical process when combined.

Goods can also be classified according to the meaning of their nature. For example, isotropic properties do not vary with viewing direction, while anisotropic properties have spatial variance.

Learn more about Physical Property:

https://brainly.com/question/2116116

#SPJ4

Your eye as well as the spider's image in the mirror are 1.28 meters apart.

A mirrors is a luminance that reflects light and creates an actual or fictitious picture. An device that returns an image is a reflector or looking glass, which reflects the image of the object when it is positioned in front of it. When focused through an eye or camera lens, light that reflects off a mirror will reveal an image of everything that was in front of it. Mirrors reflect light at an equal but opposite angle, reversing the orientation of the image.

The image distance is equal to the object distance:

Distance between the spider and mirror = 40cm

So, the image is formed 40cm inside the mirror

Distance between the person and mirror = 68cm

Distance between the image and person = 68+40= 128cm

To know more about image visit:

https://brainly.com/question/3795433

#SPJ4

When rays of light actually intersect, they form a real image. A real image is an image that can be projected onto a screen because it is formed by the actual intersection of light rays.

The real image is always inverted and smaller in size than the object being imaged. The distance between the real image and the lens or mirror that forms it is dependent on the distance between the object and the lens or mirror. Real images are formed by concave mirrors and convex lenses when the object is placed beyond the focal point, as well as by convex mirrors and concave lenses when the object is placed within the focal point.

Real images are used in many applications such as in microscopes, telescopes, and cameras. In these devices, the real image is projected onto a surface such as film or an electronic sensor, which captures the image and converts it into an electrical signal.

to know more about light rays. click this link

https://brainly.com/question/1030839

#SPJ11

Answer:

Choose how long the object is falling. In this example, we will use the time of 8 seconds. Calculate the final free-fall speed

The generator efficiency is 60.19%

What is generator efficacy?

The efficiency of the generator and overall efficiency A generator is a device that converts mechanical energy to electrical energy. The generator efficiency, the ratio of electrical power output to mechanical power input, characterizes a generator's performance. However, no electric motor is actually 100 percent efficient. Heat, noise, and the creation of products like carbon dioxide all result in energy loss. A generator is 70% efficient if it produces 700 watts out of a 1000 watt generator.

Efficiency = (Pout/Pin)x100%
= (756/1256)x100%
=60.19%

hence, the efficacy of the generator is 60.19%.

To learn more about the generator efficacy the link is given below:

https://brainly.com/question/25098342?

#SPJ4

The correct description of Miranda, one of the satellites of Uranus, is:

C) icy surface with chaotically varied terrain.

Miranda is the smallest of Uranus's five major moons, known for its unique and chaotic terrain. The surface of Miranda is heavily cratered and composed mainly of water ice, with some rocky outcrops.

However, the most striking feature of Miranda is its chaotically varied terrain, which includes large canyons, ridges, and grooves that and overlap in an irregular pattern. It is believed that this chaotic terrain is the result of geological activity in the moon's past, including tectonic and volcanic processes.

There is no evidence of active volcanoes on Miranda, and the vents of rising gas mentioned in option B are not present on the moon. Option A describes some of the features of another moon of Uranus, Ariel.

Therefore, the correct answer is option C.

Learn more about Uranus:

https://brainly.com/question/14286855

#SPJ11

The energy lost due to friction is 82 J.

This is the energy lost by a body due to friction.

Note:  The energy lost due to friction = Potential energy-kinetic energy.

To calculate the energy lost by friction, we use the formula below.

Formula:

From the question,

Given:

Substitute the given values into equation 1

Hence, The energy lost due to friction is 82 J.

Learn more about lost energy here: https://brainly.com/question/847844

Answer:

i put cereal first

Explanation:

cereal

The speed of the second bowling ball after collision is 1.55 m/s

Speed can be defined as the ratio of distance to time of a body.

To calculate the speed of the second bowling ball after collision, we use the formula below

Formula:

v = mu/m'................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the second bowling ball is 1.55 m/s fast.

Learn more about speed here: https://brainly.com/question/17146782

#SPJ1

The principle of operation of a pressurized garden sprayer is as follows;

A pressurized garden sprayer is a chamber which is filled with a liquid which can be a lubricant, paint or chemical, then filled with compressed air to allow the liquid to be sprayed at high pressure.

As it is pumped by hand, the compressed air with which it is filled serves the primary purpose of allowing the liquid to be sprayed at high pressure - an important requirement for performance characteristics of the sprayer.

Flammable liquids must not be used with such equipment.

Read more on pressurized sprayers:

https://brainly.com/question/8842747

The set of two charges experiencing the strongest attraction is charges of +2 C and -2 C, separated by 1 m. Option A.

+2 C and -2 C is an attracting force because the charges are opposite

For Charges of +2 C and -2 C the force of attraction between two charges is directly proportinal to the product of their charges and inversely proportional to the square of the distnce between them.

The product of the charges is 2 × -2 = -4 C², and the square of the distance between them is 1² = 1 m².

The force of attraction between these two charges is -4 / 1 = -4 N.

Find more exercises on charges;

https://brainly.com/question/6562914

#SPJ1

Answer:

I prefer to write the full question.....I think you should too.....or this is just free points?

When a body is positively charged, it implies that there is positive as well as negative charge in the body but the positive charge is more than negative charge.

Most of the materials that make up our world are composed of atoms, which are made up of a nucleus containing protons and neutrons surrounded by electrons. When an atom loses or gains electrons, it becomes positively or negatively charged, respectively. This is because the number of protons in an atom, which determines its atomic number and chemical properties, does not change.

When there are more protons than electrons, the atom becomes positively charged, and when there are more electrons than protons, it becomes negatively charged.Positive charge is the property of a material that has lost one or more electrons and therefore has more protons than electrons. Positive charges repel other positive charges, while negative charges attract positive charges.

To know more about neutrons visit:

https://brainly.com/question/31977312

#SPJ11

The position that visible light occupies lies between infrared and ultraviolet region. Option B is correct.

Visible light is a type of electromagnetic radiation that occupies the wavelength range between infrared and ultraviolet radiation. It has a wavelength range of approximately 400-700 nanometers (nm).

Electromagnetic radiation consists of waves of electric and magnetic fields that oscillate perpendicular to each other and travel through space. The electromagnetic spectrum encompasses all types of electromagnetic radiation, including radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

The different types of electromagnetic radiation are distinguished by their wavelength and frequency. Visible light is the only part of the electromagnetic spectrum that is visible to the human eye and is responsible for the colors we see in the world around us.

To know more about ultraviolet, refer here:

https://brainly.com/question/24524460#

#SPJ11

The evidence that some meteorites originated inside large bodies includes the presence of chondrules, which are believed to have formed in the early solar system, and the isotopic composition of certain elements that suggests they underwent a process of differentiation.

Chondrules are small, spherical grains found in some meteorites that are thought to have formed through a rapid heating and cooling process in the early solar system. This suggests that these meteorites originated from a larger body that had undergone some form of thermal processing. The isotopic composition of certain elements found in some meteorites also provides evidence for differentiation. For example, the presence of isotopic anomalies in oxygen, chromium, and other elements suggests that these meteorites underwent a process of melting and differentiation within a larger parent body.Other lines of evidence for internal differentiation within meteorite parent bodies include the presence of layered structures and variations in mineral compositions. These findings suggest that some meteorites are fragments of larger bodies that formed and differentiated in the early solar system.

Learn more about  meteorites here;

https://brainly.com/question/30756230

#SPJ11

The current through the copper wire can be calculated using Ohm's Law. The resistance is determined based on the length and diameter of the wire, and the voltage is divided by the resistance to find the current.

To calculate the current through the copper wire, we can use Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R). In this case, the resistance can be determined using the formula for the resistance of a wire, which is given by R = (ρ * L) / A, where ρ is the resistivity of copper, L is the length of the wire, and A is the cross-sectional area of the wire.

Given:

Length of wire (L) = 400 m

Diameter of wire (d) = 2 mm = 0.002 m

Voltage (V) = 240 V

First, we need to calculate the cross-sectional area (A) of the wire using the formula A = π * (d/2)^2.

Next, we can find the resistivity (ρ) of copper from the notes or reference materials. The resistivity of copper is approximately 1.7 x 10^-8 Ωm.

Using the obtained values of length (L), cross-sectional area (A), and resistivity (ρ), we can calculate the resistance (R) of the wire.

\Finally, we can calculate the current (I) by dividing the voltage (V) by the resistance (R).

By following these steps and plugging in the appropriate values, we can determine the current through the copper wire.

To learn more about Ohm's Law, click here:  https://brainly.com/question/1247379

#SPJ11

Answer:

C

Explanation:

they both have to be the same for both to not move

Answer: C,30N

Explanation:

Answer:

Specific latent heat means, the amount of heat energy needed to convert a phase completely to another phase of a unit mass of a substance. Heat capacity is dependent on the amount of substance. Specific heat or specific heat capacity (s) is the heat capacity which is independent of the amount of substances.

Specific Heat Capacity involves temperature change, while Specific Latent Heat is for phase change without temperature change. Both measure energy requirements in different contexts.

Explicit Intensity Limit (SHC) and Explicit Idle Intensity serve unmistakable jobs in portraying substances' warm ways of behaving. SHC alludes to the intensity energy expected to build the temperature of a unit mass by one degree Celsius, mirroring the substance's capacity to store heat during temperature changes.

Then again, Explicit Inactive Intensity relates to the intensity energy expected for a substance to go through a stage progress, like liquefying or vaporization, without changing its temperature. It implies the energy important to defeat intermolecular powers during these progressions in state at a steady temperature.

Generally, SHC is significant while examining temperature varieties and energy stockpiling, while Explicit Idle Intensity becomes critical during stage shifts, where substances retain or deliver energy to progress between strong, fluid, or vaporous states while keeping a consistent temperature.

To learn more about Specific Heat, refer:

https://brainly.com/question/31608647

Formula: v = s+f/2

v = average velocity

s = starting velocity

f = final velocity

Use what we are given and solve.

v = 0+(-7.68)/2

v = -7.68/2

v = -3.84

Best of Luck!

The magnetic moment produced by an electron moving in an orbit of radius r with frequency f is given by:

μ = eπr²f

The magnetic moment (μ) produced by an electron moving in an orbit can be given by the equation:

μ = (e/2m) * L

where e is the charge of the electron, m is the mass of the electron, and L is the angular momentum of the electron.

The angular momentum (L) of the electron can be calculated using the equation:

L = mvr

where v is the velocity of the electron and r is the radius of the orbit.

The frequency (f) of the electron can be related to the velocity (v) and radius (r) using the equation:

f = v / (2πr)

By substituting this relation into the expression for angular momentum, we get:

L = m * v * r = (m * f * 2πr) * r = 2πmr²f

Substituting this value of angular momentum back into the equation for magnetic moment, we have:

μ = (e/2m) * L = (e/2m) * (2πmr²f) = eπr²f

Therefore, the magnetic moment produced by an electron moving in an orbit of radius r with frequency f is given by:

μ = eπr²f

This equation shows that the magnetic moment is directly proportional to the charge of the electron (e), the square of the radius of the orbit (r²), and the frequency of the electron's motion (f).

for more questions on frequency

https://brainly.com/question/27151918

#SPJ8