- 12.) In terms of efficiency electric cost and purchase price , compare Incandescen lights to Fluorescent lights.
- 4. A mass. m_(1)=2.50kg is accelerated up the 20^circ ramp at 1.25m/s^2 The coefficient of friction is 0.200 Draw FBDs, what is the mass of second mass? [7]
- A sample of aluminum has a volume of 23cm^3 The density of aluminum is 2.7 g/cm^3 Calculate the mass of the same using dimensional analysis.Make sure to show your work.
- Kepler's First law (continued) 4. For the ellipse where the semimajor axis 20 AU and the eccentricity =0.5 find a point in the planet's orbit where the values of r_(1) and r_(2) are equal. Sketch the ellipse below as it appears on your screen. (8 points) 5. For the ellipse in Question 4, what is the value of the sum of r_(3) and r_(2) (1 point) __ 6. How does the value in Question 5 mathematically relate to the values of r_(1) and t_(2) (1 point) 7. Play with the simulator, changing the values of the semimajor axis and the eccentricity. Is the relationship you described in Question 6 true for all ellipses? (1 point) Kepler's Second law Complete the steps belo win order. Check them off as you complete them. square Click on the clear optional features button (bottom right) to remove the 1st Law features. square Open the Kepler's 2nd Law tab square Enable the show grid checkbox. square Click on the start sweeping button square Adjust the animation rate so that the planet moves at a reasonable speed. square Experiment with adjusting the size of the sweep using the adjust size slider Click and drag the sweep segment around. Note how the shape of the sweep segment changes, but the area does not
- Sllver has a density 10.5g/cm^3 What volume sliver a mass me of of 3000 0 9? 31,500 g 31,500cm^3 285.7cm^3
