In the context of variables and measurement scales, the magnitude of the differences between the numbers on the scale is meaningful in a(n) _____ scale.\

Answer:

that's true The work-energy theorem states that

The magnetic field strength willl be 2 T. A force known as the Lorentz force acts on the charge when it is subject to an electric and magnetic field.

Lorentz force is defined as the force acting on point charge when it is moving in an electric and magnetic field.

The given data in the problem is ;

B is the magnetic field strength =? T.

Current, I =?

L is the length of the wire

The magnetic force is found as;

F= BIL

15 N  = B × 3 A ×  2.5 m

B = 2 T

Hence, the magnetic field strength willl be 2 T.

To learn more about the Lorentz force refer to the link;

https://brainly.com/question/13791875

#SPJ1

a. The free-body diagram for the glass when it is at the top of the circle is attached below.

b. The equation for the net force on the glass at the top of the circle in terms of w, Fn, m, v, and r is mg x g + N -  mg x Vtop² /R =0

c. The glass will fall out of the bucket if the normal force between the glass and bucket equals zero. The speed with which she spin the bucket to prevent this from happening is 3.83 m/s.

d. The string will break if the tension on it is more than 100 N. The range of speeds can  prevent the string from breaking is 3.83< Vtop<4.99 m/s

When two or more forces are acting on the system of objects, then the to attain equilibrium, net force must be zero.

Given, Angela has a bucket of mass 2 kg tied to a string. She places a drinking glass of mass 0.5 kg in the bucket. She spins the bucket in a vertical circle of radius 1.5 m. She must swing the bucket to keep the glass from falling out.

a. The free body diagram of the bucket and glass is attached below.

b. Bucket will undergo centrifugal force

Fb = mVtop² /R

From the equilibrium of forces, we have

For bucket,

T +mb xg - N =  mb x Vtop² /R..............(1)

For glass,

mg x g + N =  mg x Vtop² /R..............(2)

Thus, this is the net force equation on the glass.

c. On adding both the equations. we have

T + (mb + mg) xg = (mb + mg) Vtop² /R

Substituting the values, T = 0 and from the question, we get

0 + (2+0.5) 9.81 = (2+0.5)(Vtop²/0.5)

Vtop = 3.83 m/s

Thus, the speed of spin to prevent glass from falling out is 3.83 m/s

d. The string will break if the tension on it is more than 100 N

100 + (2+0.5) 9.81 = (2+0.5)(Vtop²/0.5)

Vtop = 4.99 m/s

Thus, the range of velocity is  3.83< Vtop<4.99 m/s

Learn more about net force.

https://brainly.com/question/18031889

#SPJ1

Answer:

Force = 9600N

Explanation:

If this is the right question, there should have been a question before about the what the change in the momentum of the ball was. The answer to that was 9.6kg m/s. For this part, we divide this by the time taken which was 0.001s which give us the resultant force.

resultant force = change in momentum ÷ time

= 9.6kgm/s ÷ 0.001s

= 9600N

ILS is a type of facility that has a frequency of 108.15 Megahertz.

ILS is an acronym for instrument landing system and it can be defined as a precision radio navigation system that is designed and developed to provide an aircraft (airplane) with short-range guidance, so as to enable it approach a runway during bad weather or at night.

Generally, ILS uses two main directional radio signals and these include:

Read more on instrument landing system here: https://brainly.com/question/19091395

#SPJ12

The mass of 1 cm² piece of copy paper is 0.0072 g.

Assuming the dimensions of a piece of paper is 21.0 x 29.7 cm

The area of the piece of paper = 21.0 * 29.7 = 623.7 cm²

Mass of 623.7 cm² = 4.5 g

Mass of 1 cm² piece of copy paper = 4.5/623.7 cm² = 0.0072 g

Therefore, the mass of 1 cm² piece of copy paper is 0.0072 g.

Learn more about area at: https://brainly.com/question/25965491

#SPJ1

The cornea is  responsible of refraction light 1/3 in eye.

In addition to the protective function, it plays a fundamental role in the formation of vision. Transparent, it works like a lens over the iris, focusing light from the pupil towards the retina.

Normally, the cornea and lens deflect (refract) incoming light rays, focusing them on the retina. The shape of the cornea is fixed, but the lens changes shape to focus on objects at different distances from the eye.

See more about cornea at brainly.com/question/2297282

#SPJ12

Explanation:

The periscope is used in the submarines to see what is going on the water surface.

It is also used in some gun turrets and it is used in armed vehicles.

✨Hope it helps.✨

In the gaseous state,  particles transfer significant amounts of energy by both conduction and convection.

The term convection refers to a pattern of heat transfer in which there is the movement of a significant amount of matter. In convection, the particles of a fluid are moved from one point to another.

Thus, in the gaseous state,  particles transfer significant amounts of energy by both conduction and convection.

Learn more about convection:https://brainly.com/question/16635311?

#SPJ1

Answer:

Explanation:

[tex]\text{Since the fulcrum lies in between the load and effort, it is class I lever.}[/tex]

[tex]\text{Mechanical advantage (M.A.) of levers is given by,}[/tex]

[tex]\text{M.A.=effort armload arm=50cm,10cm}[/tex]

[tex]\text{Thus, mechanical advantage , M.A. = 5.}[/tex]

[tex]\text{Given, effort (E)=10N, Load(L)=?}[/tex]

∴ [tex]L=E \times M.A.[/tex]

[tex]=10\times5=50N[/tex]

Answer:

[tex]\fbox {100 cm}[/tex]

Explanation:

Finding Mechanical Advantage :

MA = Load / Effort

MA = 1000/250

MA = 4

Finding length of effort arm :

Load arm = Effort arm / 4

Effort arm = 25 cm x 4

Effort arm = 100 cm

Answer:

40kg

Explanation:

w=m×

w=400n

g=10

m=?

400/10=m×10/10

m=40

The specific heat capacity of iron is greater than that of lead hence the iron will melt the ice more than the lead.

The specific heat capacity refers to the amount of heat that is required to raise the temperature of 1Kg of a body by 1 K.

We know that the specific heat capacity of iron is greater than that of lead hence the iron will melt the ice more than the lead.

Learn more about heat capacity:https://brainly.com/question/13499849

#SPJ1

Answer:

Doppler effect

Explanation:

this means that at one point when the person running is close to the observer it will appear to run fast but slower as he moves away from the observer

A passenger is running inside a stationary train at some speed and looks at the person standing on the platform, then the person standing on the platform seems to be moving backward relative to the person running inside the stationary train because of the concept of relative velocity.

The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.

A passenger is going inside a stationary train at a certain pace when they look at the person standing on the platform, and because of the idea of relative velocity,

The person on the platform appears to be moving backward in relation to the passenger moving inside the stationary train.

By observing from the side of the person standing on the platform the person running inside the stationary train would appear to move in the forward direction because of the relative velocity.

Learn more about Velocity from here

brainly.com/question/18084516

#SPJ2

Answer:

a

Explanation:

Polymers are large molecules which form long chains

Answer: A. Polymers are substances that have relatively large molecules.

Explanation:

Select the correct answer.

Which statement about polymers is true?

A. Polymers are substances that have relatively large molecules.

B. Oil and gas are the starting materials for making all polymers.

C. Fabrics such as cotton and silk are synthetic polymers.

D. All polymers are obtained from living organisms.

The maximum energy stored in the spring bumpers is given as ¹/₂kx².

The maximum energy stored in a spring is given by the following equations;

E = ¹/₂kx²

where;

Thus, the maximum energy stored in the spring bumpers is given as ¹/₂kx².

Learn more about energy stored in spring here: https://brainly.com/question/20762015

#SPJ12

Answer:

B

Explanation:

19.8 N force is tending to lift Rover vertically off the ground.

The horizontal velocity component ([tex]v_{x}[/tex]) describes the influence of the velocity in displacing the projectile horizontally. The vertical velocity component ([tex]v_{y}[/tex]) describes the influence of the velocity in displacing the projectile vertically.

According to the question,

The women pulls the dog with a force of 30 N at an angle of  29° from the horizontal.

Horizontal component=  30cos(29°) = 22.2 N

Vertical component = 30sin(29°) = 19.8 N

Therefore,

The horizontal component would tend to make the dog move forward and the vertical component would tend lift it off the ground.

Hence,

19.8 N force is tending to lift Rover vertically off the ground.

Learn more about horizontal and vertical component here:

https://brainly.com/question/11776718

#SPJ1

Answer:

liquid

Explanation:

due to high temperatures in the magma chamber all solids liquidify on reaching the surface with colder temperatures it now solidify to form igneous rock

Let's take this problem step-by-step:

What does this problem want to solve:

 ⇒ find two pendulums that will swing back and forth in the least amount

     of time

Therefore:

 ⇒ must find the equation that calculates that period or swing time of a

     pendulum

     Equation: [tex]T = 2\pi \sqrt{\frac{L}{g} }[/tex]

Based on the equation:

  ⇒ the longer the string is ⇒ the greater the swing time

Thus:

 ⇒ pendulum Y and Z will have the least amount of swing time

Answer: (B)

Hope that helps!

#LearnwithBrainly

Ms. Woodard has traveled a distance of 5 m.

Ms. Woodard's displacement is 1 m.

The acceleration of the car is 1.66 m per sec square.

The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is accelerating.

Initial velocity=0

Final velocity= 60km/hr

To convert it into m/sec

1 km=1000 m

1 hr=3600 sec

So= (60×1000)÷3600=16.66 m/sec

time=10 sec

We know that acceleration is the rate of change of velocity per unit of time.

acceleration=(final velocity-initial velocity)÷ time taken

                     = (16.66-0)÷10

                     = 1.66 m per sec square

So, Acceleration will be, 1.66 m per sec square

For more details on acceleration refer to:

brainly.com/question/2437624

#SPJ10

[tex]\textsf {a) As there is no change in the initial and final positions, the displacement is}\\\textsf {equal to 0.}[/tex]

b) Finding total distance :

Distance travelled from 0 s to 5 s :

Distance travelled from 5 s to 10 s :

Distance travelled from 10 s to 15 s :

Distance travelled from 15 s to 20 s :

Distance travelled from 20 s to 25 s :

Distance travelled from 25 s to 30 s :

Distance travelled from 30 s to 35 s :

Distance travelled from 35 s to 40 s :

Total = 75 + 150 + 162.5 + 190 + 237.5 + 225 + 150 + 50

Total = 1240 m

c) velocity at t = 15 s

d) average velocity

e) average speed

f) Part d uses displacement whereas part e uses distance

Answer:

accuracy

Explanation:

You are trying to measure the mass of several different objects when you realize that there is a large wad of gum stuck to the underside of the balance pan. Removing the gum will improve the accuracy of your measurements.

D. It allows the flow of an electric current in the circuit.

Closed circuit allows the flow of current in the circuit from the battery to the bulb. If the circuit is open then the current will not reach to the bulb or other appliances.

So we can conclude that It is important to have a closed circuit because it allows the flow of an electric current in the circuit.

Learn more about circuit here: https://brainly.com/question/2969220

#SPJ1

The correct option is 2. The solid state is more dense than the liquid state.

The solid form of most substances is denser than the liquid phase so a block of most solids will sink in the liquid but a block of ice floats in liquid water because ice is less dense. Upon freezing the density of water decreases by about 9%. This is due to cooling of intermolecular vibrations allowing the molecules to form steady hydrogen bonds and locking into positions of hexagonal packing upon freezing to ice. These bonds are shorter in the crystal than in the liquid.

Learn more about densities of the phases of water here. https://brainly.com/question/12292208

#SPJ10

You should switch your headlights from high beam to low beam when a vehicle approaching from the opposite direction gets no closer than 492.126 feet away from you.

Low beams, often known as dipped beams have a close-range focus. The most crucial and commonly utilized beam in an automobile is the low beam.

When a car coming from the other direction is no closer than 492.126 feet away from you, you should lower your headlights from high to low beam.

Hence, a vehicle approaching from the opposite direction gets no closer than 492.126 feet away from you.

To learn more about the low beam refer;

https://brainly.com/question/11531917

#SPJ1

Answer: The cricket ball bc of the material

Explanation:

The power exerted by the cyclist is determined as 50 W.

The power exerted by the cyclist is calculated as follows;

P = FV

where;

P = 20 x 2.5

P = 50 W

Thus, the power exerted by the cyclist is determined as 50 W.

Learn more about power here: https://brainly.com/question/25263760

#SPJ1

4. The X-rays, ultraviolet light, and gamma rays all can travel through interplanetary space, so they are examples of waves is a False.

5. The amplitude of water waves as you get farther from the disturbance that caused them decreases.

The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves, visible light waves, ultraviolet rays and microwaves.

They possess high energy even to penetrate deep within the material. The electromagnetic spectrum has longer wavelength and less frequency.

4. The Earth's environment is thick an adequate number of that for all intents and purposes no X-beams can come through from space the entire way to the Earth's surface. This is great as far as we're concerned yet in addition terrible for stargazing. We need to put X-beam telescopes and identifiers on satellites.

Thus, X-rays, ultraviolet light, and gamma rays all can travel through interplanetary space, so they are examples of wave is a False statement.

5. The amplitude of the wave decreases as the time period increases. But when we get far from the disturbance, the amplitude increases.

Thus, the amplitude of water wave increases as we get farther from the disturbance.

Learn more about electromagnetic spectrum.

https://brainly.com/question/23727978

#SPJ1