10.5 Gravitational and Electromagnetic Forces

• What is the formula for gravitational force between two masses $m_{1}$ and m_{2}</latex> separated by a distance $r$?


  $F =$$G \frac{m_{1} m_{2}}{r^{2}}$
• What is a gravitational field?

  Region around a mass
• The gravitational constant $G$ is $6.674 \times 10^{ - 11} \ Nm^{2} / kg^{2}$


  True
• The strength of the gravitational field decreases as the distance from the source increases
• The strength of a gravitational field decreases as the distance from the source increases
• What is the formula for the gravitational force between two masses in Newton's law?

  $F =$$G \frac{m_{1} m_{2}}{r^{2}}$
• The gravitational force is described by Newton's law of universal gravitation
• Newton's law of universal gravitation states that every object attracts every other object with a gravitational <blank_start_start>Which force can be both attractive and repulsive?<question_end><answer_start>Electromagnetic<answer_end><distractors>Gravitational ||| Nuclear ||| Weak</distractors><qa_end>

  
  

  <cloze_start>The gravitational force between two objects is directly proportional to the product of their masses
• What is the key difference between gravitational and electric forces regarding attraction and repulsion?

  Electric force can be repulsive
• Gravitational fields are created by masses, similar to electric fields created by charged particles.

  True
• What law describes the gravitational force between two masses?

  Newton's law
• Which force is much stronger at small distances for charged particles?

  Electric force
• Newton's law of universal gravitation states that every object in the universe attracts every other object with a gravitational force.

  True
• What does Newton's Law of Universal Gravitation state?

  Every object attracts every other
• What is the mathematical formula for Newton's Law of Universal Gravitation?

  $F =$$G \frac{m_{1} m_{2}}{r^{2}}$
• What is the gravitational field?

  Region around a mass with gravitational force
• The Coulomb constant $k$ has a value of approximately 8.99
• Match the feature with the correct force:

  Gravitational force ↔️ Always attractive

  Electromagnetic force ↔️ Attractive or repulsive
• Compare and contrast the gravitational and electromagnetic forces based on their properties:

  1️⃣ Gravitational force depends on mass, Electromagnetic force depends on charge

  2️⃣ Gravitational force is always attractive, Electromagnetic force can be attractive or repulsive
• In Coulomb's Law, the electric force is proportional to the product of the charges
• What is one key difference between the gravitational and electromagnetic forces?

  Gravitational is always attractive
• The electric force between two point charges is given by Coulomb's law
• What is the key difference between gravitational and electric forces?

  Gravitational is only attractive
• The strength of the gravitational field increases as the distance from the source increases.

  False
• The key difference between gravitational and electric forces is that the electric force depends on the charges
• What two factors is the gravitational force directly proportional to according to Newton's law?

  Product of masses
• What does Newton's Law of Universal Gravitation state?

  Every object attracts every other object
• The gravitational constant G is approximately 6.674 \times 10^{ - 11} \ Nm^{2} / kg^{2}</latex>.

  True
• The strength of the gravitational field increases as the distance from the source increases.

  False
• What does Coulomb's Law state about the electric force between two point charges?

  Force is proportional to charges and inversely proportional to distance squared
• What is the electric field?

  Region around a charge with electric force
• Match the force with its properties:

  Gravitational ↔️ Depends on mass, always attractive

  Electromagnetic ↔️ Depends on charge, both
• What is the formula for the force exerted by an electric field on a charge?

  $F =$$qE$
• Gravitational fields are created by masses
• What is the formula for gravitational force according to Newton's law of universal gravitation?

  $F =$$G \frac{m_{1} m_{2}}{r^{2}}$
• The gravitational force is inversely proportional to the square of the distance
• The gravitational force between two objects is directly proportional to the product of their masses
• What is the gravitational field defined as?

  Region around a mass
• Match the type of force with its dependence:

  Gravitational force ↔️ Mass

  Electromagnetic force ↔️ Charge
• The electric force between two charges is always attractive.

  False