Pls answer asap!! I need help on this question!

Answer:

The three best answers are:

Electric fields can be positive or negative  (depending on source)

Electric fields can attrace or repel objets         (assuming the object is charged)

Electric forces are strongest near the charged object       E ∝ 1 / R^2

Answer:

the total population of the planet is 248

Answer:

e

Explanation:

I think hope it's correct

Answer:

On the side of the Earth opposite from the sun

Explanation:

As our Moon continues its orbit counterclockwise around Earth (viewed from above the north pole), more and more of the illuminated part of the Moon becomes visible to us, until it reaches the “full Moon” stage. A full Moon occurs when the Moon has moved in its orbit so that Earth is “between” the Moon and the Sun.

Answer: the sun:


Explanation:

the moon reflects the light coming from the sun. hope this helps. Can I pls have brainllyistbrainllyistbrainllyistbrainllyist

Answer:

Possible Answers:

How the points made can be more complicated or problematic:

The author seems to be focusing on pop culture or pastime activities.

The author isn’t taking into account economic differences between the average citizens of different nations.

All of these examples still follow the American idea of capitalism, not other economic systems.

Explanation:

pf

The total metabolic energy used by each to complete the course is determined as 656.91 J.

The kinetic energy of Jessie and Jaime is calculated as follows;

K.E = ¹/₂mv²

where;

15 km/h = 4.17 m/s

5 km/h = 1.39 m/s

K.E = ¹/₂(68)(4.17)² + ¹/₂(68)(1.39)²

K.E = 656.91 J

Thus, the total metabolic energy used by each to complete the course is determined as 656.91 J.

Learn more about kinetic energy here: https://brainly.com/question/25959744

#SPJ1

Answer:

silver

Explanation:

It is because it contains a higher number of movable atoms ( free electrons)

Answer:

Water scarcity can mean scarcity in availability due to physical shortage, or scarcity in access due to the failure of institutions to ensure a regular supply or due to a lack of adequate infrastructure.

Explanation:

The Federal Reserve helps to regulate the economy of the United States. So, the correct option is D.

Marketing is defined as the activities done for promoting the products through creating offers and communicating to the customers.

Here,

The Federal Reserve of the United state is functioning as a Central Bank, such that they are maintaining the financial aspects of the system.

The Federal Reserve has a great role in regulating the financial system and at the same time, the establishing of the monetary policies.

The primary functions of the Federal Reserve includes the functions of maintaining the banking operations and reliable payments for the system.

Hence,

The Federal Reserve helps to regulate the economy of the United States.

To learn more about marketing, click:

https://brainly.com/question/13414268

#SPJ7

Answer:

32.6 years

Explanation:

Each point along the track of one solar mass star represents the star's surface temperature and luminosity at one time.

A star having a mass equal to the mass of the Sun is called a one-solar mass star.

Its life track shows the luminous intensity as well as the surface temperature.

Learn more about one-solar mass star.

https://brainly.com/question/14984575

#SPJ1

Answer:

Sun is on the other side

Explanation:

Explanation:

Comets are mostly made of ice and dust

Answer:

The main difference between asteroids and comets is their composition, as in, what they are made of. Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago.Explanation:

Answer:

45 j

Explanation:

At the top, the KE will have been converted to PE

KE = 1/2 mv^2 =PEat-top = 1/2 10 *3^9 = 45 j

The composition of a star is determined from the red or blue shift of spectral lines in a spectrum, the width of the spectral lines in the spectrum.

The study of light and other radiation absorption and emission by matter is called spectroscopy. Electromagnetic radiation into its constituent wavelengths, in a spectrum, just like a prism splits light into a rainbow of colors.

The composition of a star is determined from the red or blue shift of spectral lines in a spectrum, the width of the spectral lines in the spectrum.

Hence, option D is correct.

To learn more about the spectroscopy,refer to the link;

https://brainly.com/question/13265448

#SPJ1

Answer:

 speed 9/speed 4   =   2sqrt3 / 3

Explanation:

KE = 1/2 m v^2

for 9 kg   = 3 * the 4 kg      1/2 (9)va^2   = 3* 1/2 (4) vb^2

va^2 / vb^2 = 3*  1/2 (4) / (1/2 *9)

                      6 / 4.5

va / vb = sqrt (6/4.5) =  2sqrt3 /3

ratio of the 9 speed  to the speed of the 4   is  2 sqrt 3 /3

Answer:

10g to kg=0.01

20×0.01=0.2

Force of 0.2N

Answer:

Ionic Compound

Explanation:

We know that an ionic compound dissolves easily in water. Its melting point is very high, and it is a conductor.

The equation for Ionic Compound (IC) versus Electricity (EC) is

IC=1/2 divided by EC

EC is the base for the mathematics, so EC is a base warmth at 360.

360 divided by 1/2 is 180

That is the speed in which the current has.

Glad I could help!

Call me if ya need anything!

:)

Answer:

b) 2ft/s

Explanation:

A scalar has only magintude, not direction

6.2m, 3kg, and -100 o C are all scalars because they only have magnitude.

2ft/s is not a scalar because it has a direction.

Oops.

That's my bad then.

Answer:

nothing

Explanation:If you ride a bike around the block and return to the exact point where you started, your displacement is zero.

By definition, displacement involves changing an object from its original position. No matter how far or for how long a body moves, if it returns to the position it started from, it has not been displaced at all. This means that the body has zero displacements.

Answer:

See below

Explanation:

Torgue = f * distance    basically ...so if you want to increase torque with same  f   then the distance ( lever arm)  must be increased

To increase the torque applied on a lever without exerting any more force, the length of the lever arm must be increased.

Torque is defined as the rotational analogue of force. It is the product of the applied force and the perpendicular distance.

Here,

A lever is a simple machine composed of a stiff beam and a fulcrum. Both the load and the effort are applied to the beam's ends (input force and output force, respectively).

The location on which the beam pivots is known as the fulcrum. When a force is exerted on one end of a lever, the opposite end of the lever experiences a load.

The expression for the torque acting on a lever arm is given by,

Torque, τ = Length of lever arm x Force applied

τ = L x F

From the equation, it is clear that the torque acting on the lever arm is directly proportional to its length.

τ ∝ L

Therefore, as the length of the lever arm increases, the torque applied also increases.

Hence,

To increase the torque applied on a lever without exerting any more force, the length of the lever arm must be increased.

To learn more about torque, click:

https://brainly.com/question/31709810

#SPJ2

Answer:

Explanation:

          ρ =

making mass subject of formula we have

 m=ρv

from the question aluminium and zinc have same mass hence we can say;

By Hooke's law, the spring exerts a restoring force with magnitude F when compressed by a distance x according to

F = kx

where k is the spring constant. Solve for k :

k = F / x = (108.0 N) / (0.0191 m) = 5654.45 N/m

Now solve for F when x = 0.0440 m :

F = (5654.45 N/m) (0.0440 m) = 248.796 N ≈ 249 N

Answer:

384 joule

Explanation:

mass(m) = 1200 kg,velocity(v) = 0.800m/s, Kinetic Energy(KE) = ? We know that, KE = 1/2 m× v×v, = 1/2× 1200×0.800×0.800 = 600× 0.64 = 384 joule

Answer:

fringes move farther

Explanation:

The relation between the distance between the fringes is given by

y = Dλ/d

where, D is the distance between the plane of slit and the screen

d is the width of slit, λ is the wavelength of light used.

As the slit made narrower, that means d decreases, the value of y increases, that means the fringes move farther.

Part 1- The work done by the gas during this process will be 5.65 ×10⁻³ kJ.

Part 2-The heat added to the gas during this process will be 5.65 ×10×10⁻³ kJ.

Work is the product of pressure p and volumes V during a volume change for such a gas. The work seems to be the area under the curve that indicates how the state changes.

The work done under the isothermal process is;

[tex]\rm W= P_1V_1 log_e(\frac{P_1}{P_2} )\\\\ W= 7 \times 1.71429 \times 10^{-3} log_e(\frac{7 }{2} )\\\\\ W= 0.0044 \ kJ[/tex]

For the isothermal process;

ΔU=0

[tex]\rm \triangle Q = \triangle E + \triangle W \\\\ Q = 0 + 5.65 \times 10^{-3}\\\\ Q = 5.65 \TIMES 10^{-3} \ kJ[/tex]

Hence, the work done, and the heat added by the gas during this process will be 5.65 ×10⁻³ kJ and 5.65 ×10×10⁻³ kJ respectively.

To learn more about work done by the gas, refer to the link;

https://brainly.com/question/12539457

#SPJ1

Answer:

The dynamo has a wheel that touches the back tyre. As the bicycle moves, the wheel turns a magnet inside a coil. This induces enough electricity to run the bicycle's lights. The faster the bicycle moves, the greater the induced voltage - and the brighter the lights.

Because of the bicycle's actions, the wheel turns a magnet internal a coil. This induces enough strength to run the bicycle's lighting fixtures. The faster the bicycle movements, the greater the caused voltage - and the brighter the lights.

A trendy dynamo creates an instantaneous modern-day (DC) – a one-directional waft of electrical rate. A bicycle dynamo creates an alternating current (AC), which reverses course from time to time.

A dynamo is a tool normally positioned inside the hub of a motorcycle's wheel that converts the energy generated by means of the wheel spinning to electric power. That energy is then used to run front and rear dynamo lights at the bike, offering constantly-on illumination without the want to change the lighting.

Learn more about alternating current here: https://brainly.com/question/10715323

#SPJ2

The time required to move from the equilibrium position directly to a point a will be 0.879 sec.

The period is the amount of time it takes for a particle to perform one full oscillation. T is the symbol for it. Taking the reciprocal of the frequency yields the frequency of the oscillation.

The standard equation for the SHM is found as;

[tex]\rm x = asin \omega t \\\\ \rm 12.3 \times 10^{-2} = 18.0 \times 10^{-2}sin \omega t \\\\ 0.6833=sin \omega t \\\\ \omega t =sin^{-1}0.6833 \\\\ \omega t =0.7522 \\\\ t = \frac{0.7522}{0.855 } \\\\ t=0.879\ sec[/tex]

Hence the time required to move from the equilibrium position directly to a point a will be 0.879 sec.

To learn more about the period of oscillation refer to the link;

https://brainly.com/question/14394641

#SPJ1