TEST 1: A cube of height 1mm has a volume of?
Which is a scalar quantity?
A soldier at a defending enterance to a bay discovered a pirate ship 500 m away. He fired a canon with an initial velocity of 100 m/s with a 30 degree. He missed the first ti
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A bridge 21m long has a mass 66700 kg and is supported at each end. A truck of mass 35000 kg is located 11 m from the left end. Acceleration of gravity is 9.8 m/s2. (a) What is the force on the bridge at the point of support?
A fishing reel has iner
V Vo at aav
1 X Vot at 2 2
W F cos x
V f 2 Vo 2 2aX aav
Etot KE PE
F 1 1 1 KE mv 2 Wnet mv f 2 mvi 2 PE mgy m 2 2 2 12 w F x Fs kx PEs kx Power ( P ) Fv Work: Scalar Quantity. KE: Scalar Quantity. 2 t t Conservative Force: (gr
A person pulls a 66.9N bag a distance of 343m at a constant velocity. She exerts a force of 32.5 N at an angle of 67.3*. a)Find the work she does on the bag? B) Find the work done by the force of friction on the bag? C) Find the coefficient of kineti
V Vo at
1 X Vot at 2 2
V f 2 Vo 2 2aX
ac
d r sin (Lever Arm)
I
a r
X cg
Angular.Momentum( L) Iw
s 2 r
I i wi I f w f s r
2 360o
av
w 1 dim ensions 2 t t
L 1 KEr Iw2 Inertia ( I ) mr 2 t 2 my m x m2 x2 .
Q mcT W mgh
Qcold QHot
Q / mL f ,v
c1m1 (T f T1o ) c2m2 (T20 T f )
Q T Tc Q kA h t P L P (4 r 2 )eT 4 <-Stefans Law t
P kA
Th Tc L
Heat: involves a transfer of internal energy from one location to another, results from a temp d
1) A motorist travels at 14 m/s when he sees a deer in the road 37 m away. Maximum negative acceleration is -7 m/s2. What is the max. reaction time so he avoids hitting the deer? V=14m/s X=37 m a= -7 t=?
2) A hockey puck sliding on a frozen lake com