Physics Questions from Jan 09,2025

Browse the Physics Q&A Archive for Jan 09,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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4et the 'Walls' option to "Bouncy." After you get an object moving on the ice (use a large force, try to reach a high speed), how long does it take for the object to stop moving? al text Calibri 13. Go back to using the crate and under 'Friction' set it to "Ice (no friction)." Now what force is needed to move the box? Is this different for any other object? 1. Swap to the textbook object and find the force needed to move it. Does this fit your trend? 12. Note the difference between the normal and gravitational forces on each of these objects you've objects? 7. A satellite with a mass of 350 kg is traveling by Saturn \( \left(\mathrm{m}=5.68 \times 10^{26} \mathrm{~kg}\right) \) at a distance of \( 8 \times 10^{7} \mathrm{~m} \) from its center. (A) Determine the magnitude of the force of gravity acting on the satellite due to Saturn \( F_{g}=m g \) \( =350 \) 10. Now switch to the sleepy dog object. Compare the force it needs to move to the crate and file cabinet. Does that make sense with what you said in \#9? If not, find a new trend for the forces required to move these objects. 9. On the bottom select the down arrow next to the small crate and select the file cabinet. What force is needed to move this object? How does it compare to the force to move the crate? What is different about the two objects that makes this happen? 8. Bring the crate against one wall and push it the other way enough that it keeps moving even after you let it go. While the crate is still moving is there still a net force? If so, what is it and what does it cause the crate to do? 7. Select the "Sum of Forces" box. The sum appears in green above the crate. Push the crate until it starts moving again. What is the sum just before and just after is starts moving? (Don't need a value for the 'after' case, just describe the vector. 8. Bring the crate against one wall and push it the other way enough that it keeps moving even after you let it go. While the crate is still moving is there still a net force? If so, what is it and what does it cause the crate to do? nal text Calibri 11 \( + \) B \( I \) U A \( \Leftrightarrow \) - , \( 7,1,1 \) 2 3 4 5 6 6. Which requires a larger force: starting the crate moving or keeping it moving? Why? (Hint : i briefly mentioned this in the first chapter 5 lecture.) 4. How long does it take for an object that is dropped from the top of a 45 meter high building to reach the ground? loud \( \square \) 1 ont \( 10 x \) 5. A ball is thrown with an initial velocity of 15 meters per second at an angle of \( 20^{\circ} \) above the horizontal. Aon a. Determine the vertical component of the bail's initial velocity. ving pes yer b. Determine the ball's total time of flight.
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