## Len Academy

Questions on Physics

# An 🍎 apple 🍎 falling from a tree has an unbalanced force. A. True B. False You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Force is a quantity measured in _____. A. Kilogram B. Gravity C. Incandescence D. Meter per second square (ms-1) E. Mole F. Newton You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Heat transfer indicates two systems of varying temperatures and will always be transferred from a region with lower temperature to another with higher temperature. A. True B. False You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Heat can be created. A. True B. False You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Temperature is defined as the measure or ability of an object or substance to transfer heat energy to another object or substance. A. True B. False You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Which of the following statement is incorrect concerning gravity? A. It is a natural force of attraction B. The earth is spherical in shape and we don't fall off it due to gravity C. The amount of gravity is the same all around the spherical earth D. Earth's gravity affects the satellites E. Gravity is affected by size and closeness of objects F. In an ideal space environment, gravity is absent You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE If two bodies are in thermal equilibrium with another body, then they are also in equilibrium with each other. The above statement is the _____ law of thermodynamics. A. Zeroth B. First C. Second D. Third E. Fourth F. Fifth You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Which of the following is a derived unit? A. Kelvin B. Meter C. Newton D. Candela E. Mole F. Ampere You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The following are fundamental quantities except _____. A. Power B. Electric Current C. Amount of Substance D. Temperature E. Time F. Length You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE When a car moves at a speed in a given direction, its referred to as _____. A. Speed B. Velocity C. Momentum D. Inertia E. Acceleration F. Constant Acceleration You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The rate of change of momentum is proportional to the applied force and will take place in the direction of that force. The above statement is attributed to _____. A. Albert Einstein B. Isaac Newton C. Galileo Galilei D. Neils Bohr E. Ernest Rutherford F. Marie Curie You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The Law of Inertia is also referred to as _____. A. 1st Law of Thermodynamics B. 2nd Law of Thermodynamics C. 3rd Law of Thermodynamics D. Newton's 1st Law of Motion E. Newton's 2nd Law of Motion F. Newton's 3rd Law of Motion You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The process whereby the velocity of an object increases and decreases over a period of time is best associated with the term _____. A. Speed B. Velocity C. Momentum D. Constant Velocity E. Acceleration F. Average Velocity You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The rate of motion is best referred to as _____. A. Speed B. Velocity C. Momentum D. Inertia E. Acceleration F. Constant Velocity You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Consider this expression below: A body X exerts a force FX on another body Y. In return, body Y exert a force FY back on body X. The forces FX and FY are equal in magnitude but opposite in direction. Putting the above expression into equation: FX = -FY Where FX is the action force FY is the reaction Force The above expression relates to _____. A. Theory of Force B. Force Postulate C. Einstein's proposal on Relativity D. Newton's 1st law of motion E. Newton's 2nd law of motion F. Newton's 3rd law of motion You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The tendency of a body to remain in a state of rest or in uniform motion is referred to as _____. A. Tension B. Uniform acceleration C. Constant acceleration D. Deceleration E. Inertia F. Velocity You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE A change in the position of an object with reference to time is best described as _____. A. Momentum B. Displacement C. Velocity D. Acceleration E. Direction F. Motion You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE The saying 'what goes up on earth must come down' can be best attributed to _____. A. Force B. Motion C. Mass D. Acceleration E. Average velocity F. Constant velocity You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE We have _____ laws of Thermodynamics. A. 1 B. 2 C. 3 D. 4 E. 5 D. 6 You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE Which Scientist successfully discovered the theory of special relativity? A. Albert Einstein B. Isaac Newton C. Galileo Galilei D. Neils Bohr E. Ernest Rutherford F. Marie Curie You need to be Registered or Logged in to see Answer and its Explanation Please REGISTER HERE | LOGIN HERE \$(".reglogin").hide(); \$(document).ready(function() { \$(".see1").click(function() { \$(this).next().slideToggle('slow'); }); }); \$(".answer").hide(); \$(document).ready(function() { \$(".see").click(function() { \$(this).next().slideToggle('slow'); }); });

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