Essential Cosmic Perspective
9th Edition
ISBN: 9780135795033
Author: Bennett
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 4, Problem 35EAP
To determine
To List: The developments led by Einstein’smass energy equivalence that are beneficial and dangerous.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The law of conservation of energy states that energy can be converted from one form to another but cannot be created or destroyed. Therefore, the amount of energy in the universe is constant.
In your initial post to the discussion, respond to the following prompts:
What do you think would happen if energy were not conserved?
Think of (and share) two scenarios in which our lives would be drastically altered if this law of conservation was not in place. At least one of your scenarios should be at the molecular level.
Would the implications be positive? Negative? Explain.
Humanity's Energy Needs: Humankind's total annual energy need is approximately 4 x 10^20 J.
a) What is this in Watts?
b) The solar energy reaching the Earth is ~340 W/m^2. If we could collect 100% of the energy hitting 1/20th (5%) of the Earth's surface, and Earth's surface is 5x10^14 m^2, show that we could collect enough energy to meet all of humankind's annual energy needs in less than 12 hours.
c) Alternatively, if we wanted to provide all of humankind's energy needs with wind power, how many 100 MW wind farms are needed? (Assume constant average energy use and no efficiency losses.)
What are the three forms of energy? Describe them briefly.
Chapter 4 Solutions
Essential Cosmic Perspective
Ch. 4 - Prob. 1VSCCh. 4 - Check your understanding of some of the many types...Ch. 4 - Check your understanding of some of the many types...Ch. 4 - Check your understanding of some of the many types...Ch. 4 - Check your understanding of some of the many types...Ch. 4 - Define speed, velocity, and acceleration. What are...Ch. 4 - Define momentum and force. What do we mean when we...Ch. 4 - What is free-fall, and why does it make you...Ch. 4 - Prob. 4EAPCh. 4 - Prob. 5EAP
Ch. 4 - Define kinetic energy, radiative energy, and...Ch. 4 - Define and distinguish temperature and thermal...Ch. 4 - Prob. 8EAPCh. 4 - Summarize the universal law of gravitation both in...Ch. 4 - What is the difference between a bound and an...Ch. 4 - Under what conditions can we use Newton’s version...Ch. 4 - Explain why orbits cannot change spontaneously,...Ch. 4 - Explain how the Moon creates tides on Earth. Why...Ch. 4 - How do the tides vary with the phase of the Moon?...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - Decide whether the statement makes sense (or is...Ch. 4 - A car is accelerating when it is (a) traveling on...Ch. 4 - Compared to their values on Earth, on another...Ch. 4 - Which person is weightless? (a) a child in the air...Ch. 4 - Consider the statement “There’s no gravity in...Ch. 4 - To make a rocket turn left, you need to (a) fire...Ch. 4 - Compared to its angular momentum when it is...Ch. 4 - Prob. 31EAPCh. 4 - If Earth were twice as far from the Sun, the force...Ch. 4 - According to the law of universal gravitation,...Ch. 4 - If the Moon were closer to Earth, high tides would...Ch. 4 - Prob. 35EAPCh. 4 - Testing Gravity. Scientists are constantly trying...Ch. 4 - How Does the Table Know? Thinking deeply about...Ch. 4 - Perpetual Motion Machines. Every so often, someone...Ch. 4 - Group Activity: Your Ultimate Energy Source. Work...Ch. 4 - Weightlessness. Astronauts are weightless when in...Ch. 4 - Einstein’s Famous Formula. a. What is the meaning...Ch. 4 - The Gravitational Law. a. How does quadrupling the...Ch. 4 - Prob. 44EAPCh. 4 - Head to Foot Tides. You and Earth attract each...Ch. 4 - Space Elevator. Some people have proposed using a...Ch. 4 - Prob. 47EAPCh. 4 - Prob. 48EAPCh. 4 - Prob. 49EAPCh. 4 - Prob. 50EAP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- PLEASE help me with the two questions. These are the only two I need help with and this is my last question until November. Please solve number #7 from the information in 6, and please solve question #9 from the information in number 8. THANK YOU PLEASE HELP!!arrow_forwardAnswer it correctly please. Explain your answer. I will rate accordingly with multiple votes.arrow_forwardWhy write numbers in scientific notation Understanding physics will help you describe in great detail how the world works. However, the characteristics of the world span an enormous range of numbers. The mass of an electron is 0.000000000000000000000000000000911 kg (incredibly tiny!). The mass of the Sun is 1,989,000,000,000,000,000,000,000,000,000 kg (incredibly massive!). If you had to write, interpret, or use these numbers as written, you could very easily end up making a minor math error. Scientific notation was invented to easily express numbers that are too large or too small to be conveniently written in decimal form. The advantages of scientific notation are it 1) is compact, 2) helps articulate significant figures, and 3) works with numbers of any size. The traditional format for numbers written in scientific notation is m × 10 n is where m is a number between 1 and 10 and n is an integer (either positive or negative). For the examples above, the mass of an…arrow_forward
- Hello. Please answer with a complete and correct solution. Take note of the i-hat, j-hat, and k-hat. Thank you!arrow_forwardHb Take Test HW2 - General Physics X .blackboard.com/webapps/assessment/take/launch.jsp?course assessment_id%3_1156714_1&course_id%3_330880 1&new_attempt3D1&content_id= * Question Completion Status: Calculate answer to one decimal. QUESTION 19 Power of the Human Heart. The human heart is a powerful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood. Assume that the work done by the heart is equal to the work required to lift this amount of blood a height equal to 1.6 m. The density (mass per unit volume) of blood is 1050 kg/m³. What is the heart's power output. Use g= 9.8m/s2 Calculate answer to one decimal.arrow_forwardCan you please solve question number 2 explaining step by step, on a picture please. Just post the picture of how you did it please, DON'T TYPE IT ON THE WEBSITE. Thanks.arrow_forward
- Please explain in full detail as I am trying to understand this concept! thank you! a. Sketch a diagram including Earth, Sun, and Mars, with attention to scale of distance (Mars is about 1.5 AU from the Sun) showing a faster trajectory from Earth to Mars than the minimal energy trajectory discussed in the lecture. b. Without doing a calculation, how would the arrival velocity of the spacecraft at Mars for the case in (a) compare to the spacecraft arrival in the class example? The lecture example had the spacecraft arriving at Mars with a velocity of 22.49 km/sec. c. The average velocity of Mars in orbit around the Sun is 24.08 km/sec. Comment on the trade-offs between trajectories, arrival velocities and velocity changes (delta V) required to enter an orbit around Mars.arrow_forwardDUE NOW. PLEASE ANSWER IT CORRECTLY. Just a simple solutions and correct answer. Thank you!arrow_forwardDUE NOW. PLEASE ANSWER IT CORRECTLY. Just a simple solutions and correct answer. Thank you!arrow_forward
- DUE NOW. PLEASE ANSWER IT CORRECTLY. Just a simple solutions and correct answer. Thank you!arrow_forwardW MYUW A Phy201 HW 3 A Phy201 HW 3 - Physics 201 x Home | Chegg.com My Questions bartleby i webassign.net/web/Student/Assignment-Responses/submit?dep=26280453&tags=autosave#question3955715_10 Submit Answer 3. [-/6 Points] DETAILS SERPSE10 4.2.OP.005.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A fish swimming in a horizontal plane has velocity v = (4.00 î + 1.00 j) m/s at a point in the ocean where the position relative to a certain rock is F = (16.0 i - 3.00 j) m. After the fish swims with constant acceleration for 17.0 s, its velocity is v = (21.0 î - 3.00 j) m/s. (a) What are the components of the acceleration of the fish? a, = m/s2 a, = m/s2 (b) What is the direction of its acceleration with respect to unit vector î? ° counterclockwise from the +x-axis (c) If the fish maintains constant acceleration, where is it at t = 28.0 s? y = In what direction is it moving? ° counterclockwise from the +x-axis Need Help? Read It Master It PRACTICE ANOTHER MY NOTES ASK YOUR TEACHER 4. [-/2…arrow_forwardKinetic Energy and Temperature: We will construct the algebraic relationship between kinetic energy and temperature for a gas from the ideal gas law, PV=NkT where P = pressure, V = volume, N = number of particles, k is Boltzmann’s constant, and T is temperature. Recalling that pressure can be expressed as P=F/A,where F = force and A = area, rewrite the ideal gas law in terms of Newton’s Second Law of motion in order to relate kinetic energy to temperature using dimensional analysis. (HINT: keep in mind the definitions of the kinematic variables and . Assume there is temperature associated with the kinetic energy in each direction [x,y,z] of motionarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
