1. The fractional increase in volume per unit increase in pressure is termed:
2. i.i=j.j=k.k is _________
3. The rate of change of momentum is:
4. Impulse is defined as:
5. The three phases of matter are __________
6. M=5kg, velocity =10 m/s, and time =5 s. What is the acceleration?
7. Another name for volume expansivity is
8. A force of 15N is required to stretch a catapult by 20 cm. Calculate the force constant of the rubber of which this catapult is made.
9. An example of a torque on a body is when a football is being kicked __________
10. What is the weight of a 50kg astronaut on the moon if the acceleration due to gravity is 1.7 m/s²?
11. Newton's 3rd law refers to action and reaction forces; the forces always occur in pairs and __________
12. A revolver of mass 3kg releases a bullet of mass 2kg at a speed of 60m/s. What is the revolver’s speed of recoil?
13. A block of copper is heated to an initial temperature and later placed in 0.2 kg of water at 30°C. When thermal equilibrium is attained, the temperature of the mixture is 35°C. How much heat is absorbed by the water? (Take the specific heat capacity of water as 4200 J/kg·K)
14. If a=i+j−3k, b=3i+3j+k, find a−b
15. Among the three ways in which heat can be transferred, one of them does not require a material medium. This is __________
