help ;-;
Replace the pencil with an iron nail (Doc.19 in pic)


1. does the lamp glow?

2. does an electric current flow through the lamp?


3. Does the iron nail conduct the electric current?​

Answer:

fxfvhzsegjyfetvhtde ftgfrdedddfvygy

Explanation:

mass

Answer:

the distance to the image is 1.5 m

Explanation:

To find the position of the image let's use the equation of the constructor

       [tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]

where p and q are the distance to the object and the image, respectively, and f is the focal length.

In this case a plane mirror has a focal length at infinity, if we substitute in the equation

        1 / p = - 1 / q

         q = -p

therefore the distance to the image is 1.5 m

this image has some characteristics:

* It is a virtual image, this means that light rays do not pass through it

* It is a right image, that is, the image is in the same direction of the object.

* the magnification is 1, since the height of the image and the object are the same

* has the right - left direction reversed

Answer:

Newton's First Law of Motion.

Explanation:

Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.

In physics, Sir Isaac Newton's First Law of Motion is known as law of inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.

In this scenario, a girl pushes her little brother down a snowy hill on a sled and he rides quickly to the bottom of the hill. The push from the little boy's sister is the external force acting on him and consequently, causing him to be in motion down the snowy hill.

Answer:

1. Genetic diversity are the differences in DNA among individuals within a species or population while ecosystem diversity is the number or variety of ecosystems within a particular area.

2. Genetic diversity is the genetic material of microorganisms,  plants and animals contains information that  determines the characteristics of all species and  individuals that make up the diversity of the living  world while the ecosystem diversity is the enormous range of terrestrial and  aquatic environments on earth has been classified into a number of ecosystems.

Answer:

Explanation:

Newton's 2 nd law of motion tells that when equal torque is applied on object having higher moment of inertia , it will rotate slower .

Moment of inertia of boiled egg is higher because the whole egg rotates as s solid unit . Hence it will rotate slower or it rolls slower on an inclined surface .

In this way by applying Newton's law , we can identify raw or boiled egg .

Answer:

8) A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant? 1 . 1 66. 82 NIMO 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m? Iouliply then divide 875 X 4. 2- - (4 04. 7919) 10) A spring with a spring constant of 25 N/m is stretched 65 cm. What was the force used? 11) A 25 N force stretches a spring 280 cm. What was the spring constant? 12) A 75 N force stretches a spring 175 cm. What was the proportionality constant? 8) 66.82 N/m 9) 401.79 kg 10) 16.25 N 11) 8.93 N/m 12) 42.86 N/m

Explanation:

A spring has a constant of 875 N/m. and the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.

The spring constant is a characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement which is caused by that force. The SI unit of spring constant is N.m⁻¹ (Newton per meter).

The spring constant is:

F = -k/ x

where, k is the spring constant

F denotes the force,

and x denotes the change in the length of the spring.

k = 875N/m

x = 4.5m

We know that

Kx = mg

m= kx/ g

m = 875 × 4.5/ 9.8

m = 401.78kg

Therefore, the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.

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Answer:

D) gravitational force

Answer:

Antibody molecules that are secreted by plasma cells mediate the humoral immune response. The antigen that binds to the receptor of the B-cell antigen signals B cells and is internalized and transformed into peptides that activate the armed helper at the same time.

Explanation:

Answer:

B cells

Explanation:

Humoral immunity or humoural immunity is the aspect of immunity that is mediated by macromolecules found in extracellular fluids such as secreted antibodies, complement proteins, and certain antimicrobial peptides. Humoral immunity is named so because it involves substances found in the humors, or body fluids. It contrasts with cell-mediated immunity. Humoral immunity is also referred to as antibody-mediated immunity.

Answer:

20000N

Explanation:

Given parameters:

Acceleration  = 4m/s²

Mass of truck  = 5000kg

Unknown:

Net force require to accelerate the truck  = ?

Solution:

From Newton's second law of motion:

     Force  = mass x acceleration

So;

  Force  = 5000 x 4  = 20000N

Answer:

The new force of attraction will be [tex]F_{new}=2.67\: N[/tex]

Explanation:

The electrostatic force equation is given by:

[tex]F=k\frac{q_{1}q_{2}}{r^{2}}[/tex]

Where:

Then, the original force could express as:

[tex]F_{original}=k\frac{3q_{2}}{0.15^{2}}=12[/tex]

This force is 12 N.

Now, we know that q(1) changes its value to 6 C and the new distance between the charges is 0.45 m, which means:

[tex]F_{new}=k\frac{6q_{2}}{0.45^{2}}[/tex]

We can rewrite this force in terms of the original force.

[tex]F_{new}=k\frac{2\cdot 3q_{2}}{(3\cdot 0.15)^{2}}[/tex]

[tex]F_{new}=\frac{2}{9}k\frac{3q_{2}}{0.15^{2}}[/tex]

[tex]F_{new}=\frac{2}{9}F_{original}[/tex]

[tex]F_{new}=\frac{2}{9}12[/tex]

Therefore, the new force of attraction will be [tex]F_{new}=2.67\: N[/tex]

I hope it helps you!

Answer:

When you are exercising, both your breating and heart rate go up, and it’s the opposite for sleep, when you sleep, your body slows down to rest itself.

Answer:

Explavyvyvuvubuvuvuvctcycuvrzedtcyvvy

Haha you did that to me it’s only fair

Answer:

C) By exposing a coil of wire to a changing magnetic field

Explanation:

An electrical generator creates electricity by exposing a coil of wire to changing magnetic field.

The generator converts mechanical energy which the energy due to the motion of a body and this produces electrical currents.

Answer:

your answer is C

Explanation:

the spring when fully recoiled is at maximum PE and will then convert to KE

Answer:

The centripetal acceleration is given by  

a = v 2 r = 10 2 25 = 4   m s − 2

Using Newton's Second Law, the centripetal force acting is  

F = m a = 900 ⋅ 4 =3600 N

Explanation:

Explanation:

you measure temperature in degrees celsius using a thermometer. Thermal energy is measured in joules. A larger volume of water will take longer to heat up but will store more energy than the smaller object. However, a smaller object will lose it's heat faster than a larger object. A cup of tea has less thermal energy than a swimming pool.

Answer:

Organelles

Explanation:

I learned this in science.

Answer:

x

Explanation:

The question relates to the energy required to pump water out of the

spout at the top of the triangular prism tank.

The width of the layer of water Δx thick is x m.

Reasons:

The location of the layer Δx m thick = x meters above the bottom

The length of the triangular (cross-section) prism tank = 8 meters

The length of the layer Δx thick layer = 8 meters

From the attached drawing of the cross-section of the tank, we have;

The height of the triangular tank cross-section = 3 meters

The length of the base of the triangular cross-section = 3 meters

By similar triangles, we have;

[tex]\dfrac{Height \ of \ Tank}{Base \ length \ of \ tank}= \dfrac{Height \ of \ layer \ with \ thickness \ \Delta x }{Width \ of \ layer \ with \ thickness \ \Delta x}[/tex]

Which gives;

[tex]\dfrac{3}{3} =\dfrac{x}{Required \ width}[/tex]

[tex]\dfrac{3}{3} =1 = \dfrac{x}{Required \ width}[/tex]

Required width × 1 = x

The required width = x m

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Answer:

There are six skill-related fitness components: agility, balance, coordination, speed, power, and reaction time. Skilled athletes typically excel in all six areas. Agility is the ability to rapidly and accurately change the direction of the body.

Explanation:

Answer:

B. They keep harmful programs from entering the computer from the

Internet.

Explanation:

Did the test !

Answer:

She can travel 24 miles in 3 hours.

Answer:

food chain / web lol? was this a question?

Answer:

She uses heat energy.

Explanation:

She uses heat energy. She transfers mechanical energy to heat energy wile staying in the car.

Answer:

Character vs self

Explanation:

The reason is because Martha is thinking to much about the negative things and it is making her feel like she is fighting her own body for control.