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METU D. F. HIGH SCHOOL

2016-2017 ACADEMIC YEAR, 1st SEMESTER GRADE 9 / PHYSICS

POST-EXAM REVIEW for General Exam-1 Unit Conversion

1. The length and the width of the soccer field in Camp Nou are 11.10-5 Mm and 4,5.1010 nm respectively.

What is the area of the soccer field in km2? 2. The height and the base area of the Great Pyramid of Giza (or the Pyramid of Cheops) in Egypt are 1500000 mm and 0,05 km2 respectively.

What is the volume of the Great Pyramid of Giza in ML?

3. The height, the length and the width of a container in a dock are 3,5.10-12 Tm, 5000 mm and 0,04 hm respectively.

What is the volume of the container in L?

4. A container in the shape of truncated cone is completely filled with water. The volume of the water in the container is 0,0112 m3 and the height of the container is 40000 µm. (π=3)

What is the base radius (r) of the container in dam?

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5. Object X is placed on a left pan and 0,05 kg, 1 g, 200000 mg, 200000000 µg standard masses are placed on the right pan of and equal arm balance. The balance is equilibrium.

What is the mass of object X in kg? 6. The mass of object X is 15,62 g. When it is placed on the left pan, 0,05 hg, 100 dg and 2.107 ng standard masses are placed on the right pan of an equal arm balance and the rider on the right arm is set to 5th division to set the equilibrium.

What is the sensitivity of the equal arm balance in mg/division?

7. The radius of a metal sphere is 2 cm and its mass is measured as 80000 µg. (π=3)

What is the density of the solid sphere in kg/m3? 8. A simple electric circuit is established by a light bulb, an ammeter, a voltmeter and a power supply as shown in the figure. The voltage measured by voltmeter and the current measured by ammeter are 6300 mV and 2,1.104 µA respectively. The Ohm’s Law is stated as “V=i.R” where “V” is the voltage measured in volts (V), “i" is the current measured in amperes (A) and “R” is the resistance measured in Ω (V/A) .

What is the resistance of the light bulb in kΩ?