ติวเข้มฟิสิกส์ ตะลุยโจทย์ฟิสิกส์ ข้อสอบฟิสิกส์เข้ามหาวิทยาลัย
Wave Phenomena
Sound waves are longitudinal and mechanical.
Light slows down, bends toward the normal and has a shorter wavelength when it enters a higher (n) value medium.
All angles in wave theory problems are measured to the normal.
Blue light has more energy. A shorter wavelength and a higher frequency than red light (remember- ROYGBIV).
ข้อสอบฟิสิกส์ Momentum
ติวเข้มฟิสิกส์ ตะลุยโจทย์ฟิสิกส์ ข้อสอบฟิสิกส์
41) There's a planet where it downpours glass sideways.
42) As per the Heisenberg vulnerability standard, we can't have a clue about the specific position and energy of a molecule simultaneously.
43) Your head is more seasoned than your feet. As per Einstein's hypothesis of relativity, time moves quicker the further away you are from Earth, implying that except if you invest a ton of energy topsy turvy your head ages marginally quicker than your feet.
44) It takes a photon around 170,000 years to go from the center of the Sun to the outside of the sun, and afterward simply one more eight minutes to go from the outside of the sun to your eyes.
Momentum
ติวเข้มฟิสิกส์ ตะลุยโจทย์ฟิสิกส์ ข้อสอบฟิสิกส์
16) On the off chance that you put Saturn in water, it would skim.
17) On the off chance that you mix a pack of cards appropriately, odds are that careful request has never been found in the whole history of the universe.
18) Since the risky idea of their occupations, the Apollo space travelers couldn't make a difference for disaster protection. Rather they marked a heap of signatures trusting that they got significant in the event that they passed on.
19) The sky is blue since atoms noticeable all around dissipate blue light more than different shades of light. The blue light bobs off those atoms and hits your eyes, making you see blue.
ติวเข้มฟิสิกส์ โจทย์พร้อมเฉลย
11) You can't burp in space on the grounds that there's no gravity to isolate fluid from gas in your stomach.
12) At the point when NASA arrived on defaces three men from Yemen sued them for intruding, asserting that they had acquired the planet from their progenitors.
Related Topics :
visit : Nikola Tesla - Nikola Tesla top ten inventions.
👉: Facts about magnetism - complete information
Brief history of NASA / NASA space programs
Magnetism
The first hand rule deals with the B-field around a current bearing wire, the third hand rule looks at the force on charges moving in a B-field, and the second hand rule is redundant.
Solenoids are stronger with more current or more wire turns or adding a soft iron core.
Magnetism
The direction of a magnetic field is defined by the direction a compass needle points.
Magnetic fields point from the north to the south outside the magnet and south to north inside the magnet.
Magnetic flux is measured in webers.
Left hands are for negative charges and Right hands are for positive charges.
Electricity
A coulomb is charge, an amp is current [coulomb/sec] and a volt is potential difference [joule/coulomb].
Short fat cold wires make the best conductors
Electrons and protons have equal amounts of charge (1.6 x 10-19 coulombs each).
Adding a resistor in parallel decreases the total resistance of a circuit.
Adding a resistor in series increases the total resistance of a circuit.
Energy
Mechanical energy is the sum of the potential and kinetic energy.
UNITS: a = [m/sec2], F = [kg•m/sec2] (newton), work = pe= ke = [kg•m2/sec2] (joule)
1ev is an energy unit equal to 1.6 x 10-19 joules
Gravitational potential energy increases as height increases.
Kinetic energy changes only if velocity changes.
Mechanical energy (pe + ke) does not change for a free falling mass or a swinging pendulum. (when ignoring air friction)
Units for Power is [joules/sec] or the rate of change of energy.
Mechanics
Weight (force of gravity) decreases as you move away from the earth by distance squared.
Mass and inertia are the same thing.
Constant velocity and zero velocity means the net force is zero and acceleration is zero.
Weight (in newtons) is mass x acceleration (w = mg). Mass is not Weight!
Velocity, displacement [s], momentum, force and acceleration are vectors.
