Recent content by math989

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    Finding the mass of iron using the heat equations

    That's my main issue right now because that is not given to me and I am having a hard time trying to figure how one would do that without the mass being given.
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    Finding the mass of iron using the heat equations

    Homework Statement Calculate themass of iron at 100C that causes 20.0 kg of water to change temperature from 16C to 18C. C of iron is 460 J/kg C. The C for water is 4190. [/B]Homework Equations q1+q2=0 q=mct[/B]The Attempt at a Solution q1=-q2 mct=-mct 20(4190)(2)=-m(460)(100) 167600=46000m 3.5=m
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    Newton's Laws of Motion (Is my theory correct?)

    Homework Statement If two cars of equal mass are pushed apart by a spring mounted on cart #1 with a force of 14 N what will be the resulting acceleration of the carts. Mass of carts 1 and 2= 2.0Kg f=14N A? Homework Equations F=ma The Attempt at a Solution My theory is that the Newtons will...
  4. M

    Calculate Car Mass: 19,454 N Force at 201 mph Speed

    Does that indicate that i have to use the gravity of the Earth for the "a" variable and rearrange the equation so that it is m=f/g?
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    Calculate Car Mass: 19,454 N Force at 201 mph Speed

    A race car exerts 19,454 N while the car travels at a constant speed of 201 mph, 91.36 m/s. What is the mass of the car? F=m(a) I have no idea how to start this problem; I labelled out my given info but i do not know how to incorporate it into my equation. At first i thought to use kinematic...