Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk(*) designates a quantitative problem, for which you should show all your work.
Comparing Methods. What are the strengths and limitations of the Doppler and transit methods? What kinds of planets are easiest to detect with each method? Are there certain planets that each method cannot detect, even if the planets are very large? Explain. What advantages are gained if a planet can be detected by both methods?
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- For this question, CHOOSE THE CORRECT ANSWER, then explain your reasoning in the RATIONALE section below: Alpha, Beta-plus, Beta-minus and Gamma decay are all different forms of radio-Active decay. A certain radio-isotope emits ONE alpha particle, and its products then emit TWO beta-minus particles in succession. The atomic number of the final resulting nucleus will now change (as compared to your starting nucleus) by O A. zero O B. minus 1 OC. minus 2 O D. minus 3arrow_forwardGravitational Potential Energy. Directions: Answer the following problem involving gravitational potential energy. Refer to information given in the box below. The gravitational potential energy of a pair of masses, m, and mz, that are a distance r apart is U, =Cm, m, 2. What is the gravitational potential energy of the moon with respect to the earth? The mass of the moon is 7.35 x 1022 kilograms and the mass of the earth is 5.98 x 1024 kilograms. The earth moon distance is 384, 400 kilometers. Show your solution and answer. Remember that the earth-moon distance is still in kilometers.arrow_forwardRead the following items carefully. State your assumptions if any. Show your COMPLETE solution and BOX your final answers. Keep your answers and solutions in 4 decimal places. > Initially, 100 milligrams of a new radioactive substance Tobium, named after its discoverer Sir Tobs, was discovered and collected from one of the moons of Jupiter. After 6 hours from collection, the mass decreased by 4%, If the rate of decay IS proportional to the amount of the substance present at time t, find the amount of Tobium remaining after 48 hours.arrow_forward
- Briefly explain and show your complete solution. Choose the correct answer from the choices below. Thank you.arrow_forwardB. Show your complete solutions and round off your final answer to 2 decimal places and box your final answers using a red pen. Make sure your solutions are clearly written and properly organized. 1. A ball moves in a straight line (the x-axis). The graph in the figure below shows this ball's velocity as a function of time. v (m/s) 3.0- 2.0 1.0 o J 1.0 2.0 3.0 1 (s) (a) What are the ball's average speed and average velocity during the first 3.0 s? (b) Suppose that the ball moved in such a way that the graph segment after 2.0 s was -3.0 m/s instead of +3.0 m/s. Find the ball's average speed and average velocity in this case. 2. An antelope moving with constant acceleration covers the distance between two points 70.0 m apart in 6.00 s. Its speed as it passes the second point is 15.0 m/s. (a) What is its speed at the first point? (b) What is its acceleration? 3. A juggler throws a bowling pin straight up with an initial speed of 8.20 m/s.How much time elapses until the bowling pin returns…arrow_forwardPlease answer part A. Show all work and highlight your answers. Thank you in advanced!arrow_forward
- For this question, CHOOSE THE CORRECT ANSWER, then explain your reasoning in the RATIONALE section below: Alpha, Beta-plus, Beta-minus and Gamma decay are all different forms of radio-Active decay. A certain radio-isotope emits ONE alpha particle, and its products then emit TWO beta-minus particles in succession. The atomic number of the final resulting nucleus will now change (as compared to your starting nucleus) by A. zero B. minus 1 C. minus 2 D. minus 3arrow_forwardShow your complete solution and box the final answer. Please write your solution clearly and readable. Thank you.arrow_forwardChoose the best answer to each of the following. Explain your reasoning. Which of the following is not true during Northern Hemisphere summer? (a) Sunlight strikes the ground at a steeper angle in the Northern Hemisphere that it does in the Southern Hemisphere. (b) The Sun follows a longer and higher path through the Northern Hemisphere sky than it does through the Southern Hemisphere sky. (c) Noontime shadows are longer in the Northern Hemisphere that in the Southern Hemisphere.arrow_forward
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