Recent content by dmk90

Can you explain what the magnitude of that force would be, and why?

For example, a 1-m bar fixed to a wall holding a weight of 100 N, like this: How will the free body diagram of the second case different from the first?

Based on your clarification, I calculated the velocity at the bottom using the conservation of volumetric flow rate (R = Av = constant), v0 = 17.3. Then g = dv/dt -> dt = dv/g = 0.98 s. Then d = d0 + v0t + 0.5at2 = 12.3, which seems to be the correct result. What do you think?

Homework Statement Water flows through a hole at the bottom of a tank that is filled to a height h=3m. The radius of the hole is r1 = 1.5 cm. 1. What is the speed of the water immediately after it leaves the hole? 2. At what distance d below the bottom of the tank is the radius of the stream...

Isn't 105 only applies to things at roughly sea level? Wouldn't something at 7.6 km up not be subjected to this pressure?

This is from the solution manual: The gauge pressure at a depth of 20 m in seawater is p1=ρswgd = 2.00 x 105 Pa On the other hand, the gauge pressure at an altitude of 7.6 km is p2=ρairgh=6.48 x 104 Pa Therefore, the change in pressure is Δp = p1 - p2 = 1.4 x 105 Pa

Homework Statement What is the change in pressure on a special-op soldier who must scuba dive at a depth of 20 m in seawater one day and parachute at an altitude of 7.6 km the next day? Assume that the average air density within the altitude range is 0.87 kg/m3. Homework Equations p=p0 + ρgh...

Homework Statement A broken spaceship is located h=10 km above the center of a large circular thin sheet of unknown dust. The sheet has a radius of R=106 km and a density of σ = 7*1011 kg/m2. The spaceship and the dust attract each other due to the gravitational force. a) Find the initial...