1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gogolik [260]
3 years ago
11

Which of the following best describes a magnetic field? a region around a magnet in which you can measure magnetic forces. a mea

sure of the length of a magnet. the force that pushes two magnets away from each other. an invisible region that surrounds the north pole of a magnet.
Physics
2 answers:
gregori [183]3 years ago
7 0

Answer:

a region around a magnet in which you can measure magnetic forces.

Explanation:

Magnetic field is the field that surrounds the magnet so that when a magnetic material is placed in that region then that magnetic material will experience some magnetic force on it

this magnetic force is given by

F = mB

here we know that

m = magnetic pole strength

B = magnetic field strength

so correct answer will be

a region around a magnet in which you can measure magnetic forces.

ale4655 [162]3 years ago
3 0
The first one is correct.
You might be interested in
Question 3
GREYUIT [131]

Based on scientific data, the stone is accelerated at approximately 10 m/s^2.

<u>Given the following data:</u>

  • Weight = 5 Newton
  • Height = 44 meters.

<h3>What is gravity?</h3>

Gravity can be defined as a force of attraction that controls the movement of the planets such as Earth around the Sun.

This ultimately implies that, gravity is a universal force of attraction that acts between all objects or matter that are having both mass and energy, and can occupy space.

<h3>Gravity on planet Earth</h3>

Furthermore, the gravity near the Earth's surface generally makes it possible for all physical objects such as stones to possess weight and experience a free fall.

According to astronomical records, the acceleration due to gravity for an object experiencing a free fall near the Earth's surface is 9.8 m/s^2.

In this scenario, the stone is accelerated at approximately 10 m/s^2.

Read more on weight here: brainly.com/question/13833323

6 0
3 years ago
Millikan is doing his oil drop experiment. He has a droplet with radius 1.6 µm suspended motionless in a uniform electric field
swat32

Answer:

The charge on the droplet is 3.106\times10^{-16}\ C.

Yes, quantization of charge is obeyed within experimental error.

Explanation:

Given that,

Radius = 1.6μm

Electric field = 46 N/C

Density of oil = 0.085 g/cm³

We need to calculate the charge on the droplet

Using formula of force

F= qE

mg=qE

V\times\rho\times g=qE

q=\dfrac{V\times\rho}{E}

q=\dfrac{\dfrac{4}{3}\pi\times r^3\times\rho\times g}{E}

Put the value into the formula

q=\dfrac{\dfrac{4}{3}\times\pi\times(1.6\times10^{-6})^3\times85\times9.8}{46}

q=3.106\times10^{-16}\ C

We need to calculate the quantization of charge

Using formula of quantization

n = \dfrac{q}{e}

Put the value into the formula

n=\dfrac{3.106\times10^{-16}}{1.6\times10^{-19}}

n=1941.25

Yes, quantization of charge is obeyed within experimental error.

Hence, The charge on the droplet is 3.106\times10^{-16}\ C.

Yes, quantization of charge is obeyed within experimental error.

7 0
3 years ago
Read 2 more answers
Bonsoir, je suis complètement bloquée, j’ai besoin de répondre aux 3 questions:
Lapatulllka [165]

Answer:

3)le changement oblige le monde à rechercher des sources d'énergie et de carburant alternatives à faible émission de carbone.... le remplacement des combustibles fossiles par des alternatives renouvelables telles que les biocarburants est un moyen efficace de réduire ces émissions ... ... combiné à une croissance économique significative dans les économies émergentes ... 3) Sécuriser l'approvisionnement énergétique

Explanation:2)Le calculateur d'équivalences de gaz à effet de serre utilise le taux d'émission marginal moyen pondéré national américain de CO2 moyen de l'outil AVoided Emissions and GenRation Tool (AVERT) pour convertir les réductions de kilowattheures en unités évitées d'émissions de dioxyde de carbone.

La plupart des utilisateurs du calculateur d'équivalences qui recherchent des équivalences pour les émissions liées à l'électricité veulent connaître les équivalences pour les réductions d'émissions des programmes d'efficacité énergétique (EE) ou d'énergie renouvelable (ER). Pour calculer les effets des émissions d'EE et d'ER sur le réseau électrique, il faut estimer la quantité de production d'énergie fossile et les émissions déplacées par l'EE et les ER. Un facteur d'émission marginal est la meilleure représentation pour estimer quelles unités alimentées aux combustibles fossiles EE / ER sont déplacées dans le parc fossile. Les programmes d'EE et d'ER ne sont généralement pas supposés affecter les centrales électriques de base qui fonctionnent tout le temps, mais plutôt les centrales électriques marginales qui sont mises en service si nécessaire pour répondre à la demande. Par conséquent, AVERT fournit un facteur d'émission marginal national pour le calculateur d'équivalences.

Facteur d'émission

1558,8 lb CO2 / MWh × (4,536 × 10-4 tonnes métriques / lb) × 0,001 MWh / kWh = 7,07 × 10-4 tonnes métriques CO2 / kWh

1)Dans le préambule de la réglementation conjointe EPA / Department of Transportation du 7 mai 2010 qui a établi les normes d'économie de carburant du programme national initial pour les années modèles 2012-2016, les agences ont déclaré qu'elles avaient accepté d'utiliser un facteur de conversion commun de 8887 grammes de Émissions de CO2 par gallon d'essence consommé (Federal Register 2010). A titre de référence, pour obtenir le nombre de grammes de CO2 émis par gallon d'essence brûlée, la teneur en chaleur du carburant par gallon peut être multipliée par le kg de CO2 par teneur en chaleur du carburant.

Cette valeur suppose que tout le carbone de l'essence est converti en CO2 (GIEC 2006).

Calcul

8887 grammes de CO2 / gallon d'essence = 8,887 × 10-3 tonnes métriques de CO2 / gallon d'essence

7 0
4 years ago
A pilot is flying from DFW to NYC. The air traffic controller directs him to fly 69° Northeast at 243 m/s. What is the y compone
kolezko [41]

Answer:

v_{y} = 227 m/s

Explanation:

Assumptions: 0° is true North, and 90° is east (along the x-axis).

To solve this problem we must use the expression:

v_{y} = v_{0}sin(\theta)

Where v_{y} is the velocity in the y-direction (East), v_{0} is the total velocity in the direction which the aircraft is travelling, and \theta is the direction the aircraft is travelling (angle from the y-axis).

Using the equation above, we obtain the y-component of velocity

v_{y} = (243)sin(69) = 226.86... m/s which is rounded to 227 m/s (due to the number of significant figures in the question).

8 0
4 years ago
A 10-μF capacitor in an LC circuit made entirely of superconducting materials ( R = 0 Ω ) is charged to 100 μC. Then a supercond
satela [25.4K]

Answer:

Vdc=10V

Explanation:

in a closed loop consisting of a super charged capacitor and an inductor, the super charge capacitor acts as a supply when the loop is closed, at t=0, the emf stored in the capacitor is 10V (q/c); and at that same time Vl= voltage across the inductor or loop too would be 10V,

if the loop remains closed for  a longer period, the inductor would absorb energy from the capacitor till it dissipates all charges with itself.

8 0
3 years ago
Other questions:
  • a shot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 ∘above the horizontal. th
    11·1 answer
  • What divides the northern hemisphere from the southern hemisphere
    7·1 answer
  • To properly record a measurements, you must record which of the following?
    9·1 answer
  • To withstand "g-forces" of up to 10 g's, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a "human ce
    5·1 answer
  • Explain net force for the illustration and direction of motion
    9·1 answer
  • Which expressions correctly represent variations of Ohm’s law? Check all that apply.
    5·2 answers
  • according to newtons second law of motion, when an object is acted on by an unbalanced force, how will that object respond?
    13·2 answers
  • An object in motion stays in motion, in a _______________________, unless acted on by an external _____________________________
    9·1 answer
  • When water in clouds undergoes condensation, it can lead to?
    13·1 answer
  • Dùng một dao vòng có thể tích 50cm3 để lấy mẫu đất nguyên dạng, khối lượng đất
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!