Mastery Level Check Point
Level 3
3. Nurul had two similar sheets, Y and Z, made of the same material. She placed
the sheets on a heater as shown.
.
sheet Y
sheet Z
heater
At the start, sheets Y and Z were of the same length. After a while, sheet Z
became longer than sheet Y.
(a) Give a reason why sheet Z became longer than sheet Y. [1]

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?