Question 3: Angelique, an acrobatic 60 kg pharmacy student, dives from atop a tall flagpole into a swimming pool below. Assume no air friction and that conservation of energy applies to this case. Her potential energy at the top is 12 J (relative to the surface of the pool). a) How high is this flagpole above the swimming pool? b) What is her kinetic energy when her potential energy is reduced to only 2000 J? e) What is her speed just before she hits the water surface of the swimming pool? Question 4: A pharmacist from South Africa decided to relocate to Canada He took two of his favourite lamps with him rated at (40 W, 200V) and (100 W, 200V) respectively. a) What are the resistances of the 40W and 100 W bulbs, respectively and which one will shine the brightest? Will the resistance change if he moves to another country? Explain. b) In Canada he discovers that they only use 120 V instead of 240 V. What will most likely happen to the brightness of these lightbulbs if he plugged it into a socket in Canada? Motivate your answer. e) He now experiments with the 2 lightbulbs and connected it in series whilst in Canada. What will most likely happen to the brightness of these lightbulbs (in SERIES) if he plugged it into a socket in Canada? Motivate your answer with calculations.
Question 3: Angelique, an acrobatic 60 kg pharmacy student, dives from atop a tall flagpole into a swimming pool below. Assume no air friction and that conservation of energy applies to this case. Her potential energy at the top is 12 J (relative to the surface of the pool). a) How high is this flagpole above the swimming pool? b) What is her kinetic energy when her potential energy is reduced to only 2000 J? e) What is her speed just before she hits the water surface of the swimming pool? Question 4: A pharmacist from South Africa decided to relocate to Canada He took two of his favourite lamps with him rated at (40 W, 200V) and (100 W, 200V) respectively. a) What are the resistances of the 40W and 100 W bulbs, respectively and which one will shine the brightest? Will the resistance change if he moves to another country? Explain. b) In Canada he discovers that they only use 120 V instead of 240 V. What will most likely happen to the brightness of these lightbulbs if he plugged it into a socket in Canada? Motivate your answer. e) He now experiments with the 2 lightbulbs and connected it in series whilst in Canada. What will most likely happen to the brightness of these lightbulbs (in SERIES) if he plugged it into a socket in Canada? Motivate your answer with calculations.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question
Transcribed Image Text:Question 3:
Angelique, an acrobatic 60 kg pharmacy student, dives from atop a tall flagpole into a
swimming pool below. Assume no air friction and that conservation of energy applies to this
case.
Her potential energy at the top is 12 J (relative to the surface of the pool).
a) How high is this flagpole above the swimming pool?
b) What is her kinetic energy when her potential energy is reduced to only 2000 J?
e) What is her speed just before she hits the water surface of the swimming pool?
Question 4:
A pharmacist from South Africa decided to relocate to Canada He took two of his favourite
lamps with him rated at (40 W, 200V) and (100 W, 200V) respectively.
a) What are the resistances of the 40W and 100 W bulbs, respectively and which one will
shine the brightest? Will the resistance change if he moves to another country? Explain.
b) In Canada he discovers that they only use 120 V instead of 240 V. What will most likely
happen to the brightness of these lightbulbs if he plugged it into a socket in Canada?
Motivate your answer.
e) He now experiments with the 2 lightbulbs and connected it in series whilst in Canada.
What will most likely happen to the brightness of these lightbulbs (in SERIES) if he
plugged it into a socket in Canada? Motivate your answer with calculations.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
Recommended textbooks for you
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON