Q3. A student investigated the relationship between the force applied to a 2 points spring and the extension of the spring. This is the method used. 1. Hang a
spring from a rod.2. Hang a mass from the spring.3. Measure the extension
of the spring.4. Repeat steps 2 and 3 using different masses. (a) Give two
ways in which the appearance of the spring has changed.
Figure 1 shows a spring before and after a mass had been hung from it
Figure 1
Before
After
Metro rule
Spring
00D
.B
8
Mass
D
(a)
Give two ways in which the appearance of the spring has changed
Your answer
The extension of the spring is the distance between which two points on
the metre rule? Use letters from the diagram in Figure 1.
1 point

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

1. the materials manager for a billiard ball maker must periodically place orders for resin, one of the raw materials used in producing billiard balls. she knows that manufacturing uses resin at a rate of 50 kilograms each day, and that it costs $.04 per day to carry a kilogram of resin in inventory. she also knows that the order costs for resin are $100 per order, and that the lead time for delivery is four (4) days.2. at what point should resin be reordered? a. 0 kilograms remainingb. 50 kilograms remainingc. 200 kilograms remainingd. 400 kilograms remaininge. 500 kilograms remaining3. if order size was 1,000 kilograms of resin, what would be the length of an order cycle? a. 0.05 daysb. 4 daysc. 16 daysd. 20 dayse. 50 days4. if the order size was 1,000 kilograms of resin, what would be the average inventory level? a. 50 kilogramsb. 200 kilogramsc. 500 kilogramsd. 800 kilogramse. 1,000 kilograms5. if the order size was 1,000 kilograms of resin, what would be the daily total inventory costs, excluding the cost of the resin? a. $5b. $10c. $20d. $25e. $40