MODULE 2 Physics

1.The total number of proton and neutron is called
– mass number of an element

2.A slug is a unit of
– mass for English system

3.2 different elements can never be the same number of
– proton

4.The mass of neutron is
– much greater than the mass of electron

5.The SI unit of force is
– Newton (N)

6.The definition of stress
– force over area

7.The definition of high malleability
– the ability to become a thin sheet by hammering / passing thru a roller

8.Relationship between the buoyant force which exerted in submerged body and weight of submerged body displaces
– buoyant force equal to the weight of the fluid the body displace

9.Force that tends to cause twisting or angular displacement about the longitudinal axis
– torsion

10.Impulse is the product of
– force and time interval

11.Precession of a gyro is
– inversely proportional to the moment inertia of rotor and angular velocity of rotor

12.Calculate the kinetic energy of an object with mass = 4kg, velocity = 3msˉ¹
– 18 Joule

13.A boy pushes a box using a force of 100N over a distance of 2m in 5sec. What is the power generated by him? –
40 watt

14.Define specific gravity of a substance
– density of a substance over density of water of equal volume

15.Temperature of 77ºF is equal to
– 25ºC

16.Temperature of 113ºF is equal to
– 318ºK

17.A length of a ruler of 100cm has center of gravity of
– 50cm

18.A mass of an object of 10kg is lifted thru a distance of 4m on a planet where g = 6msˉ². Calculate the work
– 240 Joule

19.Definition of 1 calorie
– 4.186 Joule or amount of heat needed to raise the temperature of 1 g of water by 1ºC

20.Acceleration of the earth of this orbit around the sun points
– straight in toward the sun

21.Which of the following statement is not true about temperature
– temperature flow from the hotter part to the colder part

22.If fluid moves freely, it has
– low viscosity

23.Which of the following shows that force can change the shape of an object
– a balloon pressed in the center

24.A boat thrust backward as we move forward, it is due to
– Newton’s 3rd law

25.When a car drive in a level straight away and suddenly hit the brake, what is the acceleration vector poin
ta)opposite direction to the car traveling
b)the same direction to the car traveling

26.According to the law of momentum, in an ideal closed system
– when 2 object collide, neither gain or lost of energy

27.Which have not an effect to the momentum of the moving of spherical object
– diameter

28.Which is not always true – acceleration is always points in the same direction with the velocity

29.A ball is put on the floor did not move when a rope attached to it is placed because
– great number of gravitational force

30.Velocity has 2 components. What are they?
a)Magnitude and direction
b)Distance and time