If the coefficient of kinetic friction between a 22-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? What horizontal force is req

The type of material that is least likely to be transported as suspended load is gravel.

Gravel is made up of large, irregularly shaped particles that are too heavy to be suspended in water for long periods of time. Instead, gravel is typically transported as bed load, which means that it rolls and slides along the bottom of a stream or river. Other materials that are less likely to be transported as suspended load include sand and pebbles. These particles are smaller than gravel, but they are still too heavy to be suspended for long periods of time. However, they can be transported as suspended load if the water is flowing quickly enough. The type of material that is most likely to be transported as suspended load is clay. Clay particles are very small and have a high surface area. This makes them very effective at absorbing water, which makes them buoyant and allows them to be suspended in water for long periods of time.

Learn more about transportation here : brainly.com/question/29851765
#SPJ11

The Paschen series is a spectral series of hydrogen-like atoms that is similar to the Balmer series, but with a different value of the principal quantum number.

Specifically, the Paschen series corresponds to transitions between an excited state with principal quantum number n greater than or equal to 3, and the n=3 energy level in hydrogen-like atoms.

Like the Balmer series, the Paschen series also produces a series of spectral lines, which are the result of the emission of electromagnetic radiation as the electrons in the atom transition from higher energy levels to lower energy levels.

However, the wavelengths of the spectral lines in the Paschen series are longer than those in the Balmer series, due to the higher energy levels involved.

Overall, the Paschen series is an important aspect of the study of atomic physics, and provides valuable insights into the behavior of hydrogen-like atoms and their spectral emissions.

To know more about Paschen refer here

brainly.com/question/29376664#

#SPJ11

A change in temperature frequently causes substances to change phases. Most substances are solid at low temperatures; as the temperature rises, they become liquid; and at still greater temperatures, they become gaseous.

Melting is the conversion of a solid into a liquid (an older term that you may see sometimes is fusion). Solidification is the process where a liquid turns into a solid. The melting point, or the temperature at which a pure substance begins to melt, is a property of that substance. A solid must expend energy to become a liquid. A specific quantity of energy is required by every pure substance in order to transform from a solid to a liquid. This amount is known as the substance's enthalpy of fusion (or heat of fusion).

The complete question is- The diagram shows how states of matter can change when energy is either added or removed.

System before change

System after change

00000

00000

00000

00000

00000

00000

00000

All of these statements below are true EXCEPT

Energy was added to the matter causing the particle movement to increase.

The matter changed states which is a physical change.

The particles in the matter before the change had more energy than after the change.

The particles in the matter before the change had less energy than after the change.

the diagram is attached below.

Learn more about temperature here-

https://brainly.com/question/11464844

#SPJ9

The change in potential energy ΔU will be equal to qV, where q is the charge. Hence, the statement that is true in general is ΔU= qV.

The correct answer is ΔU= qV. A charge is moved through a potential difference generated by other charges.

Let q be the charge, U be the electrical potential energy and V be the voltage (also known as the electric potential). The statement that is true in general is ΔU= qV.In an electric field, electric potential is defined as the amount of work done per unit charge in bringing a small positive test charge from infinity to that point in the field where the electric potential is to be measured.

The electric potential energy of a charge Q placed in an electric field is given by the formula U = QV, where V is the potential difference across the two points.

Therefore, the change in potential energy ΔU will be equal to qV, where q is the charge.

Hence, the statement that is true in general is ΔU= qV.

To know more about energy  visit

https://brainly.com/question/29256439

#SPJ11

Here are the positive instructions corresponding to the given negative instructions:

1. Please refrain from jumping on the sofa.

2. I would like you to walk instead of running now.

3. Could you please pick up your toys?

4. Please avoid pushing him off the slides.

5. Could you go to your room and clean up the mess?

6. Please keep your legs off the table.

7. Let's stop throwing the crayons.

8. I would prefer if you didn't sit near the door.

9. Let's lower our voices and avoid shouting.

10. Please wait for your turn to speak and avoid interrupting me.

Answer:

B. Direction

Explanation:

Speed is a scalar quantity and doesn't keep track of direction : Velocity is a vector quantity and is direction aware.

Hi there!

(A)

When the rock reaches the peak, it will have a vertical velocity of 0 m/s. We can use the equation:

vf = vi + at

vf = final velocity (0 m/s)

vi = initial velocity (2 m/s)

a = acceleration (in this situation, due to gravity = 9.8 m/s²)

t = time (s)

0 = 2 + (-9.8)t

2/9.8 = t = .204 sec

(B)

Use the equation:

d = vit + 1/2at²

d = 2(.204) + 1/2(-9.8)(.204²)

d = .204 m

Answer:

Stars are very massive stellar objects, which means that they have a very intense force of gravity. This is the first of the forces entering this "war".

In addition to that, due to the force of gravity that drives the star to contract, the process known as fusion occurs (the union of atoms of one element that results in another element, hydrogen fuses in stars to produce helium). The fusion created in the high temperatures of the center of the star generates an enormous amount of energy (which causes the stars to shine) and a force going outward of the star counteracting gravity, this is the second force in the "war" .

In a stable star these two forces (gravity going inward and the pressure created by the fusion going outward ) are in balance, preventing the star from exploding or collapsing. But eventually the star exhausts its "fuel" (hydrogen atoms) to produce fusion within it (although stars also fuse helium and other heavier elements, but once the hydrogen is finished the star is near its end), which decreases the force outward from the star, making the force that wins this battle to be the force of gravity.

When the force of gravity wins, the star collapses on itself and from here, depending on the star's mass, several things can happen, such as the star becoming a white dwarf, a supernova, even a black hole.

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -

Stars are very massive stellar objects and remain the longest in the stage when it is burning Hydrogen into Helium.

Thus,

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -

Learn more:

https://brainly.com/question/13172138

Answer:

His distance would be 80 or 13 something. I dont really understand this question. Just be sure to look into other answers pls.

Explanation:

Answer:

Below

Explanation:

FIND TOTAL NORTH DISPLACEMENT

   40 sin 35     + 50       + 10 sin 20   = 76.363 mi

FIND TOTAL E-W DISPLACEMENT  

  40 cos 35        -   10 cos 20 = 23.369 mi

Total resultant displacement ( using pythag theorem)

   sqrt ( 76.363^2 + 23.369^2 ) = 79.86  mi

    angle = arctan ( 79.23 / 23.37) = 73 °  North of East

At the surface of the ocean, the pressure is atmospheric pressure. At a depth, the pressure is hydrostatic pressure. At a depth of 2, the pressure is 20% greater than the atmospheric pressure.

Pressure is the force per unit area that one substance exerts on another substance. At the surface of the ocean, the pressure is the atmospheric pressure, which is 1 atm or 101.3 kPa. At a depth of any fluid, the pressure increases due to the weight of the fluid above it and the gravitational force acting on it. This is called hydrostatic pressure.

The hydrostatic pressure at any depth is proportional to the depth and the density of the fluid and the gravitational force. Thus, the pressure at a depth d in a fluid can be represented as P = ρgh, where ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth. Therefore, the hydrostatic pressure increases with depth at a constant rate of 1 atm per 10 meters or 1 kPa per meter below the ocean surface.

At a depth of 2, the pressure is 2 x 1 atm = 2 atm or 101.3 kPa x 2 = 202.6 kPa. The pressure at a depth of 2 is 20% greater than the atmospheric pressure at the surface of the ocean.

Learn more about hydrostatic pressure here:

https://brainly.com/question/28206120

#SPJ11

Answer:

0.0118125 (kg)

Explanation:

mass = density x volume

First, find the volume of the cube as you're already given the density. You're also given the length of the cube, 1.5 cm. You need to convert this to m since the density's unit is kg/m^2

1.5cm x (1m/100cm) = 0.015m

Since Volume = (length)^3,

Volume of the cube = (0.015)^3

Volume of the cube = 3.375*10^-6

So mass of the cube = (3500)(3.375*10^-6) = 0.0118125 (kg)

This can be calculated by the simple harmonic motion, and the lowest resonant frequency for this string is 89 Hz.

Harmonic motion refers to the motion an oscillating mass experiences when the restoring force is proportional to the ​displacement, but in opposite directions. Harmonic motion is periodic and can be represented by a sine wave with constant frequency and amplitude.

Let 356Hz be the nth  harmonic of the string.

Thus nc/2l = 356 Hz

and (n+1)c/2l = 445 Hz

dividing both of them

(n+1)/n = 445/356 = 1.25

again,

n+1 = 1.25n

0.25n = 1

n = 1/0.25

n = 4

So, lowest resonant frequency = c/2l = 356/4 = 89 Hz

Hence the lowest resonant frequency for this string is 89 Hz.

To learn more about harmonic motion , visit here

https://brainly.com/question/28208332

#SPJ4

Answer:

1.positive velocity.

2.speeding up.

Answer:

the answer is equal to the microwave gamma rays visible light x-rays.

Answer:

A

Explanation:

THAT is th equation for Potential Energy

Answer:

1. chemical energy --> electrical energy --> light energy

2. Electrical Energy --> Mechanical Energy

3. Electrical Energy --> Heat Energy

4. Chemical Energy --> Thermal Energy  --> Mechanical Energy

5. Nuclear Energy --> Light energy and thermal energy

6. Mechanical Energy --> Electric Energy

7. Chemical Energy --> Electrical Energy --> Sound Energy

8. Mechanical Energy --> Sound Energy

Explanation:

1.FLASHLIGHT:

chemical energy --> electrical energy --> light energy

The chemical energy from the cell batteries is converted to electrical energy, which is used to produce the light energy in form of flashlight.

2.ELECTRIC SAW:

Electrical Energy --> Mechanical Energy

The electrical energy from the socket is converted to the mechanical energy used to run the saw blade.

3.TOASTER:

Electrical Energy --> Heat Energy

The electrical energy from the socket is converted to the heat energy (thermal energy) used in browning the bread.

4.GAS POWERED SCOOTER:

Chemical Energy --> Thermal Energy  --> Mechanical Energy

The chemical energy from fuel, such as petrol is converted to heat (thermal energy) in the engine by the process of combustion. This heat is then used to do work by conversion into mechanical energy, through piston movement, which in turn moves the shaft and the scooter.

5.THE SUN:

Nuclear Energy --> Light energy and thermal energy

The nuclear reactions on Sun provide nuclear energy which is converted into light and thermal energy that reaches us on earth.

6.WIND TURBINE:

Mechanical Energy --> Electric Energy

The mechanical energy is provided by wind when it rotates the blade of turbine. This is then converted to electrical energy b the turbine.

7.IPOD:

Chemical Energy --> Electrical Energy --> Sound Energy

The chemical energy i supplied by the battery of ipod, which is converted to electrical energy and that electrical energy is used to produce sound by ipod.

8.SPEAKER VIBRATES

Mechanical Energy --> Sound Energy

The mechanical energy due to vibration produces sound energy.

Answer:

1. chemical energy --> electrical energy --> light energy

2. Electrical Energy --> Mechanical Energy

3. Electrical Energy --> Heat Energy

4. Chemical Energy --> Thermal Energy  --> Mechanical Energy

5. Nuclear Energy --> Light energy and thermal energy

6. Mechanical Energy --> Electric Energy

7. Chemical Energy --> Electrical Energy --> Sound Energy

8. Mechanical Energy --> Sound Energy

Explanation:

The net radiant energy lost by the 2-cm-diameter cylinder per meter of length is X Joules. The temperature of the 6-cm-diameter cylinder is Y °C.

To calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length, we need to consider the Stefan-Boltzmann law and the emissivities of both cylinders. The formula for net radiant heat transfer is given:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4)

Where:

- Q_net is the net radiant energy lost per meter of length.

- ε1 is the emissivity of the 2-cm-diameter cylinder.

- σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/(m^2·K^4)).

- A1 is the surface area of the 2-cm-diameter cylinder.

- T1 is the temperature of the 2-cm-diameter cylinder.

- T2 is the temperature of the surroundings (27 °C).

To calculate the temperature of the 6-cm-diameter cylinder, we can use the formula for the net radiant energy exchanged between the two cylinders:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4) = ε2 * σ * A2 * (T2^4 - T3^4)

Where:

- ε2 is the emissivity of the 6-cm-diameter cylinder.

- A2 is the surface area of the 6-cm-diameter cylinder.

- T3 is the temperature of the 6-cm-diameter cylinder.

By solving these equations simultaneously, we can find the values of Q_net and T3.

To know more about radiant energy click here:

https://brainly.com/question/31870099

#SPJ11

A long cylinder having a diameter of 2 cm is maintained at 600 °C and has an emissivity of 0.4. Surrounding the cylinder is another long, thin-walled concentric cylinder having a diameter of 6 cm and an emissivity of 0.2 on both the inside and outside surfaces. The assembly is located in a large room having a temperature of 27 °C. Calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length. Also, calculate the temperature of the 6-cm-diameter cylinder

Answer:

1,500 ohms is the total resistance

Answer:

acceleration: 5.48 m/s²

time taken: 9.3 seconds

Given:

\(\boxed{\sf acceleration = \dfrac{Force}{mass}}\)    \(\boxed{\sf time \ taken = \dfrac{final \ velocity - initial \ velocity}{acceleration} }\)

using the formula's:

answer 1:

\(\sf acceleration = \dfrac{F}{m}\)

\(\sf acceleration = \dfrac{6572 }{1200 }\)

\(\sf acceleration = 5.4766... \ m/s^2\)

\(\sf acceleration = 5.48 \ m/s^2\)             // rounded to nearest hundredth //

answer 2:

\(\sf time \ taken = \dfrac{\Delta v}{a}\)

\(\sf time \ taken = \dfrac{66 - 15}{5.48}\)

\(\sf time \ taken = 9.3122 \ seconds\)

\(\sf time \ taken = 9.3 \ seconds\)           // rounded it to nearest tenth //

Answer:

\(\large\boxed{\sf Time =9.30\ s }\)

\(\large\boxed{\sf Accl^n =5.47\ m/s^2 }\)

Explanation:

Here it is given that a car of mass 1200kg has an initial velocity of 15m/s achieves a velocity of 66m/s . A force of 6572N was applied in order to increase the velocity and we need to find the time taken in doing so .

From Newton's Second Law of Motion ,

\(\sf\qquad\longrightarrow Force = \triangle p\\\\ \)

As momentum (p) = mass × velocity ,

\(\\\sf\qquad\longrightarrow Force = \dfrac{m(v-u)}{t} \\\\ \)

Here ,

• On substituting the respective values ,

\(\sf\qquad\longrightarrow 6572N = \dfrac{1200kg ( 66- 15 )m/s }{t}\\\\ \)

\(\sf\qquad\longrightarrow 6572N = 1200kg \times \dfrac{51}{t} \\\\ \)

\(\sf\qquad\longrightarrow t = \dfrac{1200×51}{6572N } \\\\ \)

\(\sf\qquad\longrightarrow t =\dfrac{61200}{6572}s \\\\ \)

\(\sf\qquad\longrightarrow \pink{\frak{ Time = 9.30\ s }} \)

• For finding acceleration ,

\(\sf\qquad\longrightarrow Force = mass * acceleration \\\\ \)

\(\sf\qquad\longrightarrow accl^n =\dfrac{Force}{mass} \\\\ \)

\(\sf\qquad\longrightarrow accl^n =\dfrac{6572N }{1200kg} \\\\ \)

\(\sf\qquad\longrightarrow \pink{\frak{ acceleration= 5.47\ m/s^2}} \\\\ \)

\(\rule{200}4\)

Among the options given, the use of "autoclave" is the most preferred in a disinfection process for salon implements. Autoclave is a method of sterilizing materials through high-pressure steam.

Autoclaves are the best means of disinfecting salon implements because they kill both bacterial spores and fungi, as well as viruses.An autoclave is used in beauty salons to sterilize items that may have been contaminated with blood, fungi, or bacteria. An autoclave, unlike other forms of sterilization, completely eliminates all types of microorganisms, including viruses and spores, from tools and equipment.

Disinfection is the method of reducing the number of microorganisms on an item to a degree where it is no longer harmful. Bacterial endospores are the most challenging microorganisms to remove or kill. An autoclave is the only method of sterilization that effectively kills all types of bacterial endospores.

An autoclave is the best way to disinfect salon implements since it destroys both bacterial spores and fungi as well as viruses. Sterilization, the process of killing or removing all types of microorganisms, is necessary for beauty salons to guarantee the safety of their customers. Disinfection is the procedure of reducing the number of microorganisms to a point where they are no longer dangerous. Autoclaving is the preferred method of sterilization for salon equipment since it is the only method that can kill bacterial spores.Autoclaves have been used in beauty salons for a long time to sterilize tools and equipment. They are highly effective and have been shown to kill all types of microorganisms, including spores. Autoclaves work by subjecting the objects being sterilized to high-pressure steam. This procedure ensures that all microorganisms are killed and that the objects are safe to use. In conclusion, the use of autoclave is the most preferred in a disinfection process for salon implements because it is the only method that can kill all types of microorganisms, including bacterial spores, fungi, and viruses.

To know more about Disinfection  :

brainly.com/question/31565449

#SPJ11

If the ventilation fan has radius of blades as 0.25 m and rotating at 20 rpm , then the tangential speed of each blade tip is 0.52 m/s .

The Tangential Speed is defined as the linear speed of any object that is  moving along a circular path.

it is given that , radius of the blades = 0.25 m  ;

rotating rpm of blades (N) = 20 rpm ;

the tangential speed of the blade can be calculated by :

v = r(2πN/60)

substituting the values ,

we get ;

v = 0.25 × (2×π×20/60)

simplifying further ,

we get ;

v = 0.52 m/s .

Therefore , the tangential speed of the blade is 0.52 m/s .

Learn more about Tangential Speed here

https://brainly.com/question/15016193

#SPJ4

The statements true in regards to heat is 3. Heat is a form of energy, can be reflected by a mirror, and cannot pass through a vacuum.

Heat is a form of energy. Heat is the transfer of thermal energy from one object to another. Thermal energy is the energy of motion of the particles in an object. Heat can be reflected by a mirror. Heat is a form of electromagnetic radiation, and electromagnetic radiation can be reflected by mirrors.

Heat cannot pass through a vacuum. Heat is a form of electromagnetic radiation, and electromagnetic radiation cannot pass through a vacuum. Heat is not an electromagnetic radiation. It is a form of energy that is transferred from one object to another because of a difference in temperature.

Find out more on heat here: https://brainly.com/question/30738335

#SPJ1

Complete question:

Which of the following statements are true regarding heat?

(a) Heat is a form of energy

(b) Heat can be reflected by mirror

(c) Heat is an electromagnetic radiation

(d) Heat can pass through vacuum

Select the correct answer from the codes given below :

1. 1, 2 and 3

2. 2, 3 and 4

3. 1, 2 and 4

4. 1, 3 and 4

The cup's specific heat capacity if the final temperature is 24.4°C is 2.54J/kg°C.

Specific heat capacity of a substance can be calculated using the following expression:

Q = mc∆T

Where;

mc∆T (water) = - {mc∆T} (metal)

1.25 × 4.184 × 4.4 = - (0.75 × c × -12.1)

23.012 = 9.075c

c = 2.54J/kg°C

Learn more about specific heat at: https://brainly.com/question/29766819

#SPJ1

We have a cylindrical diving bell (a vertical cylinder with the lower end open and the upper end closed) of height 12 m that is immersed in a lake until the water inside the bell rises 8 m from the bottom of the cylinder. We are to determine the distance between the top of the bell and the surface of the lake.

To solve this problem, we'll need to consider the following information:The pressure on the top of the bell is atmospheric pressure, since it is open to the air. The pressure at the bottom of the bell will be the sum of atmospheric pressure and the pressure due to the water column.The pressure at the bottom of the cylinder will be calculated as follows:P = hρg + Patmwhere P is the pressure at the bottom of the bell, h is the height of the water column, ρ is the density of water, g is the acceleration due to gravity, and Patm is the atmospheric pressure.

Since the bell is open at the top, the pressure at the top of the bell is equal to atmospheric pressure, P = Patm.At the top of the bell, the pressure is atmospheric, while at the bottom of the bell, the pressure is P = (8.0 m)(1000 kg/m³)(9.8 m/s²) + 1 atm = 78,400 Pa + 1 atm.From this information, we can calculate the height of the column of water above the top of the bell as follows:P = hρg + PatmRearranging this formula to solve for h, we get:

h = (P - Patm)/(ρg) = (78,400 Pa)/(1000 kg/m³ x 9.8 m/s²) = 8.0 m.

So the distance between the top of the bell and the surface of the water is 8.0 m, since the water rises 8.0 m above the bottom of the bell.

To know more about atmospheric pressure visit :

https://brainly.com/question/28310375

#SPJ11

The given information is: a cylindrical diving bell (a vertical cylinder with the lower end open and the upper end closed) with a height of 10m and a radius of 1.5m is lowered into a lake. Determine the distance between the top of the bell and the surface of the lake.

For such more question on density

https://brainly.com/question/26364788

#SPJ8

Answer:

a

Explanation:

teacher told me?

When you turn while moving, your speed zeros out before rising.

What is instantaneous speed?

The speed of an object can change as it moves. The speed of an object at a certain instant of time is known as the instantaneous speed. If the position is a function of time, then the speed depends on the change in the position as time changes.

Turning around while moving causes your speed to drop to zero before rising in the opposite direction at the same location.

While you might maintain a steady pace if you made a semicircle turn, you wouldn't be traveling along the same road in the other direction.

To learn more about instantaneous speed click on the link below:

https://brainly.com/question/1222392

#SPJ4

Answer:

This level of needs is known as safety needs. Safety needs are the need for security, stability, and protection from physical and emotional harm. These needs include physical safety, financial security, health and well-being, and protection from discrimination and harassment.

Explanation:

Answer:

velocity term

Explanation:

Answer:velocity term

Explanation: