Answers created by qin

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• The compressor on an air conditioner draws 50.0 A when it starts up. If the start up time is 0.45 s, how much charge passes a cross sectional area of the circuit in this time?
  
• Why can we assume that radio waves travel through air at the same speed as light?
  
• Question #0d3f7
  
• A ball with a mass of #12 kg# moving at #7 m/s# hits a still ball with a mass of #24 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?
  
• Question #b54aa
  
• How do solve the following linear system?: # x+2y=1 , -3x -8y = -9 #?
  
• Question #61e9a
  
• Question #97de6
  
• Question #ca019
  
• Question #9a436
  
• Question #ffd7b
  
• Question #cd241
  
• What is the last sublevel filled for carbon?
  
• Question #28dda
  
• Question #22bcc
  
• Why is tension added?
  
• How do you solve #-x + y = 1# and #x^2 +y^2 = 16# using substitution?
  
• Question #e4337
  
• What are the products of this reaction: #H_3PO_4(aq) + NaOH(aq) ->#?
  
• Question #e1576
  
• Question #98403
  
• Question #14d5b
  
• How are dipole - dipole forces created?
  
• Question #f0948
  
• A 2.20kg object which is 1.20m in diameter is rolling to the right without slipping on a horizontal floor at a steady 3rad/sec. Then How fast its center is moving?
  
• Question #0139f
  
• What is the formula for the kinetic energy of a particle of mass #m# traveling at velocity #v#?
  
• Question #530ad
  
• Question #f7804
  
• If the length of a #23 cm# spring increases to #46 cm# when a #16 kg# weight is hanging from it, what is the spring's constant?
  
• Question #82b13
  
• Question #ea432
  
• When a listener moves towards a stationary source of sound , the change in the pitch of sound occurs due to change in: a) wavelength b)intensity c) speed of waves d) all of the them?
  
• Question #e4a84
  
• Question #849c2
  
• Question #8e958
  
• Question #19986
  
• Question #54ef3
  
• The force applied against an object moving horizontally on a linear path is described by #F(x)=8-x#. By how much does the object's kinetic energy change as the object moves from # x in [ 0, 4]#?
  
• The position of an object moving along a line is given by #p(t) = cos(t- pi /3) +2 #. What is the speed of the object at #t = (2pi) /4 #?
  
• Question #8d30e
  
• How do you solve #e^ { x + 4} = \frac { 1} { e ^ { 6} }#?
  
• What are the sources of thermal energy in the Earth's interior?
  
• What is the moment of inertia of a pendulum with a mass of #2 kg# that is #5 m# from the pivot?
  
• How do seismic waves affect buildings?
  
• Question #e3f11
  
• Question #6287f
  
• A projectile is shot at an angle of #pi/6 # and a velocity of # 5 m/s#. How far away will the projectile land?
  
• What is the velocity of a wave if there are #25# waves in a span of #50cm# and their frequency is #60# per second?
  
• Using the right-hand rule for forces, which way does this rod rotate?
  
• Question #ab81b
  
• Question #79485
  
• Question #0045c
  
• Question #78c29
  
• Question #9678a
  
• Question #cb24f
  
• Question #79da4
  
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 3 #?
  
• How do you graph # y = x - 4# by plotting points?
  
• Question #64914
  
• Question #de249
  
• Question #f8d33
  
• Time travels faster than light. Light has a mass of 0 and according to Einstein nothing can move faster than light if it doesn't have its weight as 0. Then why does time travel faster than light?
  
• Question #add4b