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.
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
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...
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...