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is this the right place to go for help . i am seeking help with my physical science
Weegy: yes you can ask any question User: a car moves4 times as fast as another care. compared to a slower car, the faster car at wat times the KE Weegy: he new car is four- tenths of a second slower than last year's car. User: so is the car 4 times the KE Weegy: Yes the car is 4 times the KE. User: a car moves 4 times as fast as another identical car. compared to a slower car, the faster car has ______ times the KE Weegy: To calculate KE or Kinetic energy do you have the mass and speed of the car User: its 4 times faster Weegy: KE = 1/2 (M * (V * V)) User: a machine puts out 100 w of power for engery 1000 w put into it . the efficiency of the machine is Weegy: (Wout/Win)*100% is the formula so User: a machine puts out 100 w of power for every 1000 w put into it . the efficiency of the machine is Weegy: (1000/100)*100% = 10 the effeincy of the machine is 10% User: thank u (More)
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Asked 1/26/2009 9:25:19 AM
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if the earth,s mass decreases to one-half its original mass with no chang in radius then your weight would ?
Weegy: It would decrease to one-half its original value. F = G M m / d2 (More)
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Asked 1/26/2009 9:59:27 AM
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when the distance between two stars decreases by half, the force between then
Weegy: When the distance between two stars decreases by half, the force between them increases to four times as much. (More)
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Asked 1/26/2009 10:03:45 AM
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before ice can form on a lake , all the water in the lake must be cooled to _____ c
Weegy: The lake ice must be cooled to 0 degrees Celcius. User: metals are both good heat conductors and also electrical conductors because of the ______ (More)
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Asked 1/26/2009 11:08:29 AM
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a water-filled paper cup help in a flame will not catch fire . this is because
Weegy: The fact that water has a boiling point of 100 °C means that paper will not reach its ignition temperature if water is heated in a paper cup. [ The high specific heat capacity of water means the temperature rise in a heated balloon is limited if it contains water. The good thermal conductivity of water conducts the heat away from the hot spot above the Bunsen flame in each case. ] User: so the paper cup cannot become apprecaible hotter than the water in it (More)
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Asked 1/26/2009 11:19:20 AM
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