1. Find the pressure increase in the fluid of a syringe when a
nurse applies a force of 42N to the syringe’s circular piston, which has a radius of 1.1cm = 0.011m.
2. If the temperature on one thermometer is and the other
is ,
To the nearest ,
- What is the temperature difference?
- What would be the answer if the temperature difference is in ?
- a) Calculate the absolute pressure at an ocean depth of 1,060m.
- Along a highway water is pumped through a straight
- The small piston of a hydraulic lever has a diameter of 5cm.
Assume the density of seawater is 1024kg/m^3 and the air above exerts a pressure of 101.3kPa.
b) What Force does this pressure exerts on an area of 1.5m^2?
horizontal underground pipe. The water enters one end at a speed of 7.2 m/s through an inlet radius of 0.05m and exits under a pressure of 0.06 atm through an outlet radius of 0.03m.
- What is the speed of the water at the other end?
- What is the pressure at the inlet?
- What is the flow rate? The volume of water per sec.
Recall: Flow rate = AV (A: area, V: velocity)
Density of water = 1,000 kg/m^3
The large piston has a diameter of 50 cm.
- What weight on the small piston will support 15 xN on the large?
- What distance should the small piston move to raise the larger 2 cm?
1.A wheel rotates with a constant angular acceleration of 3.50 rad/s2. If the angular speed of the wheel is 2.00 rad/s at ti = 0 (initially),
(a) Through what angle does the wheel rotate in 2.00 s?
(b) What is the angular speed at t = 2.00 s?
- The wheel of a grinder is a 0.8 kg disk with a radius of 0.04 m.
It spins uniformly to rest from 1400 rpm in a time of 4s.
a) Find the Moment of Inertia
b) How large is the frictional torque required to slow it motion?
Note: the moment of inertia of a disk is
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