Recent content by ramenluver50

Homework Statement A 54.0 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 327 g of water, initially at 19.4°C. What is the final temperature of the water, if no heat is transferred to the Styrofoam or the surroundings? Homework Equations Q=mc(delta)T...

down is 9.8 (gravity,) down slope is 74 in mag. the slope from the X axis is 10 deg from it.the Y of the triangle i believe is (74 sin 10) and perpendicular to the slope i have upward is 558 N

what is FBD? , the forces affecting the skier is air resistance, *frictional force, gravity, velocity

umm I am lost now... maybe i drew it wrong... the air resistance is the magnitude isn't it? iono.. start over?

it is sin, (lookin for the Y component of the slope) which i had (74 sin 10),

air resistance is opposite to the velocity, and friction force should be the same, gravitainal force opposes it but i don't think directly bc its is not parallel to the slope.

it would be the sum of normal force, and air resistance? so it should be 74 +558 ?

Homework Statement A skier of mass 57 kg skis down a 10° slope @ constant velocity. The force of air resist. has a magnitude of 74 N. Find the frictional force on the skis. Homework Equations F=ma F(fr) = (mu)(Fn) The Attempt at a Solution I found Fn= ma where is 558N so...

Newtons...?

wieght is downward force, and air is up...

thx i got number 3 down, the other resistance for number 2 is air...

2) there is also gravity,not sure what to do with it though, 3) i did sin 41=28/T1 which gave me 42.6 , that isn't right bc its force is larger... :-/

for Number 2, i used the F=ma formula, where, 99.5 (1.09) to get the Newtons of 108, which is wrong...for #3, i got T3 which is 28 N, but for T1 and T2, do i just used T3 as the vertical measurement to find T1 and T2 ?

so your saying if i just find the X and Y for F they X and Y should be the same force equivalence to F1 and F2? , i tried for X where sin 33.1=X/65, and X would be 35.5, apparently the answer is incorrect. EDIT:******* sorry, you are right, i entered the answer in the wrong answer slot, haha.. thx

yes, where there is balance