Questions asked by Asghar khan

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• What is the angle between A×B andB×A?
  
• A sound has speed of 330m/s and frequency of 50Hz what is the possible distance between 2 points on wave that have phase difference of 60°?
  
• An object in satellite orbiting around the earth is weightless due to?
  
• Which state of matter solid,liquid,or gas have the heighest internal energy?
  
• 2 capicitor wire s habing diameter 3.0mm and T having diameter 1.5mm are connected in parallel a potential difference is applied across the ends of parallel arrangement the value of ratio of current T to current S is?
  
• A pedal bicycle fitted with electrical motor the rider switch on the motor for 3.0 min.a constant current of 3.5A in the electrical motor is provided from baterry with a terminal voltage 24v.what is the energy supplied by the baterry?
  
• Among transition metal managnese vanadium chromium and iron which is best conductor?
  
• Methane on complete oxidation in presence of copper as catylst under 200 atm yeilds?
  
• If kinetic energy of electron is double then its radius becomes?
  
• If the velocity of body is doubled then % increase in centripetal force will be?
  
• When kinetic energy become equal to momentum then the velocity becomes?
  
• A body of weight 10N in lift which is moving upward with acceleration 2g its weight will be?
  
• The gravitational force between two unit masses seprated by unit distance is?
  
• Which of them is conserved in nuclear rxn? only mass, only energy,only charge,none?
  
• The ionozation energy of hydrogen atom is 13.6ev the 2 ionization energy for helium is?
  
• A reaction in which A+2B converted into C.then 5 moles of A and 8 moles of B will produce how many moles of c?
  
• If the radius of the orbit is half then the numbdr of days in 1 year will be?
  
• The ratio of electric force betweem 2 electrons to the gravotational force between them is of the order of?
  
• An object weighing 80N on surface of earth will weigh 20N at how much distance from the center of earth?
  
• When a vector is multiplied by number less then -1 then its magnitude and direction to original vector respectively are?
  
• The angle made by resultant vector R=2underroot3i-2j with x axis is?
  
• The sum of two vector A and B is 5i+j and their difference is 3i-2j the vector then is?
  
• A wave source of frequency 1000Hz radiate wave of wavelength 0.10m.the time taken to travel 2500m is?