AT-A-DISTANCE FORCES
It is a Force that is exerted mainly because of an object's mass
a) Magnetism
b) Electricity
c) Gravity
c) Gravity
The Earth's mass is too big
Electrical Negative Charges come from very small particles called:
a) Neutrons
b) Protons
c) Electrons
d) Positrons
c) Electrons
All materials have Magnetic Properties
a) True b) False
b) False
It's a type of At-a-distance Force exerted by the action of charged objects
Electric Force (Electricity)
Objects like the Moon or other natural satellites are too small to have Gravity
a) True b)False
b)False
Objects have typically a neutral charge, this is due to:
a) Amount of Neutrons being greater than that of Protons
b) Amount of Protons being greater than that of Electrons
c) Amount of Electrons being the same as that of Protons
c) Amount of Electrons being the same as that of Protons
a) Positive to Negative
b) South to North
c) North to North
d) South to South
b) South to North
Force that works only on certain materials that attract specific metals like Iron.
Magnetism
When any object takes off the planet, the higher the Altitude is, the _______ the gravity will be.
Weaker
Two charged objects get close enough to interact. Each object has an overall charge of -30 C. Which is more likely to occur?
a) Both objects will be attracted equally
b) Both objects will be repealed unequally
c) Both objects will be attracted unequally
d) Both objects will be repealed equally
d) Both objects will be repealed equally
The Planet Earth can move a compass needle, therefore:
a) There are magnets everywhere on Earth
b) The compass gets attracted by Earth's gravity
c) The Earth is a Magnet
c) The Earth is a Magnet
All non contact forces share the following characteristic
a) The closer the distance between objects is, the stronger they get
b) They are all related to mass
c) They all work due to friction
d) All have attraction and repelence
a) The closer the distance between objects, the stronger they are
Calculate the Weight (N) of a Person (85 kg) that stands on the Moon Titan, one of Saturn's moons. It is estimated that Titan's g is 1.325 m/s2
W= mg
112.63 N
Calculate the Electric Force (FE) between two objects with the following charges.
Object A: -20 C
Object B: +5 C
Distance: 20 cm
k= 9 x109
FE = k (q1 x q2 / d2)
- 2.3 x1013 N
Electromagnetism was first described by:
a) Isaac Newton
b) Michael Faraday
c) Nikola Tesla
d) Elon Musk
b) Michael Faraday
Law of Universal Gravitation. Calculate the Gravity Force (Fg) that the Sun Exerts on Mercury. Consider the following data:
Sun's Mass= 1.989 ×1030 kg
Mercury's Mass= 3.285 ×1023 kg
Distance between them= 47,151,000 km
G = 6.67 x10-11
Fg= G (m1 x m2 / d2)
1.96 x1022 N
Calculate the Electric Force (FE) between two objects with the following charges.
Object A: +10 C
Object B: +10 C
Distance: 30 cm
k= 9 x109
FE = k (q1 x q2 / d2)
1 x1013 N