2011test1v1

# 2011test1v1 - Phys 100 Fall 2011 Concepts of Physics Class...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Phys 100 Fall 2011 Concepts of Physics: Class Test I 26 September 2011 Name: Total: /50 Instructions • There are 10 questions on 5 pages. • Show your reasoning and calculations and always justify your answers. Physical constants and useful formulae speed = distance traveled time elapsed s = d t acceleration = change in velocity time elapsed a = v t distance = 1 2 × acceleration × time 2 d = 1 2 × a × t 2 acceleration = net force mass a = F m net force = mass × acceleration F = ma earth’s gravitational force = mass × 9 . 8 F = m × 9 . 8 gravitational force = 6 . 67 × 10- 11 × mass 1 × mass 2 distance 2 F grav = 6 . 67 × 10- 11 × m 1 × m 2 d 2 Question 1 A sulfur atom ( S ) has a mass exactly 32 times that of a hydrogen atom ( H ). Hydrogen atoms and sulfur atoms can combine to form hydrogen sulfide, H 2 S (one sulfur atom and two hydrogen atoms). Which of the following (choose one) is the correct mass ratio of sulfur to oxygen produced when hydrogen sulfide is decomposed? a) 2 to 1 (i.e. two kg of sulfur per one kg of hydrogen). b) 1 to 2 (i.e. one kg of sulfur per two kg of hydrogen). c) 64 to 1 (i.e. 64 kg of sulfur per one kg of hydrogen). d) 32 to 1 (i.e. 32 kg of sulfur per one kg of hydrogen)....
View Full Document

{[ snackBarMessage ]}

### Page1 / 5

2011test1v1 - Phys 100 Fall 2011 Concepts of Physics Class...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online