
Concept explainers
(a)
To write: The number of parsec in
(a)

Answer to Problem 69P
Explanation of Solution
Given:
The arc length is equal to
The angle of arc covered is
Formula used:
Write the expression for arc.
Rearrange the above expression in terms of
Here, r is the radius,
Calculation:
Substitute
The radius of circle is
Calculate the number of parsec in
Conclusion:
Thus,
(b)
To write: The number of meter in
(b)

Answer to Problem 69P
Explanation of Solution
Given:
Formula used:
Write the conversion for parsec into astronomical units as follows:
Calculation:
Calculate the number of meters in
Conclusion:
Thus,
(c)
To write: The number of meters in a light-year.
(c)

Answer to Problem 69P
A light-year is equal to
Explanation of Solution
Given:
Formula used:
Write the expression for distance covered.
Here, d is the distance covered, v is the speed of object and t is the time taken.
Calculation:
Substitute
Conclusion:
Thus, a light-year is equal to
(d)
To write: The number of AU in a light-year.
(d)

Answer to Problem 69P
A light-year is equal to
Explanation of Solution
Given:
Formula used:
Write the conversion for light years into meter as follows:
Calculation:
Calculate the number of AU in a light-year.
Conclusion:
Thus, a light-year is equal to
(e)
To write: The number of light-year in a parsec.
(e)

Answer to Problem 69P
Explanation of Solution
Given:
Formula used:
Write the conversion for parsec into meter as follows:
Calculation:
Calculate the number of light-year in a parsec.
Conclusion:
Thus,
Want to see more full solutions like this?
Chapter 1 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
- Part A: kg (a) Water at 20 °C (p = 998.3 and v = 1 × 10-6 m²/s) flows through a galvanised m³ iron pipe (k = 0.15 mm) with a diameter of 25 mm, entering the room at point A and discharging at point C from the fully opened gate valve B at a volumetric flow rate of 0.003 m³/s. Determine the required pressure at A, considering all the losses that occur in the system described in Figure Q1. Loss coefficients for pipe fittings have been provided in Table 1. [25 marks] (b) Due to corrosion within the pipe, the average flow velocity at C is observed to be V2 m/s after 10 years of operation whilst the pressure at A remains the same as determined in (a). Determine the average annual rate of growth of k within the pipe. [15 marks] 4₁ Figure Q1. Pipe system Page 2 25 mmarrow_forwardFor an independent study project, you design an experiment to measure the speed of light. You propose to bounce laser light off a mirror that is 53.5 km due east and have it detected by a light sensor that is 119 m due south of the laser. The first problem is to orient the mirror so that the laser light reflects off the mirror and into the light sensor. (a) Determine the angle that the normal to the mirror should make with respect to due west.(b) Since you can read your protractor only so accurately, the mirror is slightly misaligned and the actual angle between the normal to the mirror and due west exceeds the desired amount by 0.003°. Determine how far south you need to move the light sensor in order to detect the reflected laser light.arrow_forwardA mirror hangs 1.67 m above the floor on a vertical wall. A ray of sunlight, reflected off the mirror, forms a spot on the floor 1.41 m from the wall. Later in the day, the spot has moved to a point 2.50 m from the wall. (a) What is the change in the angle of elevation of the Sun, between the two observations?arrow_forward
- It is not (theta 1i) or (pi/2 - theta 2i)arrow_forwardAssume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.250 mW. (a) If such a laser beam is projected onto a circular spot 3.40 mm in diameter, what is its intensity (in watts per meter squared)? 27.5 W/m² (b) Find the peak magnetic field strength (in teslas). 8.57e-7 X T (c) Find the peak electric field strength (in volts per meter). 144 V/marrow_forwardIdentify the most likely substancearrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityAstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning





