You and a friend go sailing for the day. At the end of the day you need to pull the boat up onto the shore. Your friend pulls 40 degrees CW from the x-axis
with 200-lbs of force. You pull at 45 degrees CCW from the x-axis with 250-lbs
of force. MAKE SURE TO MAKE A DRAWING.
Answer the following:
a. Resultant Force =
Ibs
b. Resultant Angle =
degrees
c. Resultant Sense =
SHOW ALL WORK!!

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Diamond will scratch quartz. true or false

If a balloon is taken outside on a very cold day, what will occur?