Question 1
State one factor that affects pressure in liquids
Answer
Density of the liquid
Question 2
Anyango placed her finger on a water as shown in the diagram below
Name the force that lifts the water to the finger
Answer
Adhesive force
Question 3
In an experiment to measure the radius of a wire a student cut the wire into 100 identical pieces of length 7mm and dipped the pieces completely into a burette with initial level of liquid at 49.5cm3 mark. If the final level was at 0cm3. Determine the radius of 0cm3 the wire giving your answer to two decimal places
Answer
Question 4
State Newton’s Second Law of Motion
Answer
The rate of change of momentum of a body is proportional to the applied force and takes place in the direction of the force
Question 5
The figure below shows a force pump
Explain how the water gets past valve V2
Answer
During the down strokeV1 closes down due to its own weight. Pressure is increased in the chamber forcing V2 to open hence water flows past V2