How Do You Convert Minutes to Years and Analyze Speed Comparisons?

  • Thread starter Thread starter bombsaway
  • Start date Start date
  • Tags Tags
    Time
AI Thread Summary
To convert 0.35 minutes to years, perform dimensional analysis by sequentially converting minutes to hours, hours to days, days to months, and finally months to years, ensuring all units are canceled appropriately. For the skateboarding question, a speed of 14.7 m/s converts to 52.92 km/h, which exceeds the 30 km/h limit, indicating the skateboarder would receive a ticket. The snail, moving at 3 km/h, is 100 times slower than a normal human walk, making it approximately 17.64 times slower than the skateboarder. The key to these conversions lies in systematic unit cancellation and understanding speed comparisons. Proper dimensional analysis is essential for accurate conversions and comparisons in physics problems.
bombsaway
Messages
1
Reaction score
0

Homework Statement



15. Convert the following times. All units must be shown as well as cancellations.

f) 0.35 minutes to years.

19. a) The maximum speed reached by a standing skate boarder is about 14.7 m/s. Would the skate boarder get a ticket in a 30 km/h speed zone?

b) A snail crawls 100 times slower than a normal human walk (3km/h). How many times slower than the skate boarder is the snail?

Homework Equations


The Attempt at a Solution

 
Physics news on Phys.org
You did not really state where your stuck...which it makes it a bit hard to help you.

But here is a try for the first q

"Convert the following times. All units must be shown as well as cancellations.

f) 0.35 minutes to years"


This is a dimensional analysis type q. Used commonly in chemistry and higher classes physics.

for example, 50 mL to L

50mL x 1L/1000mL

as you can see we converted over a unit we want and canceled the units we do not want. Your question follows a similar path...just keep converting until you get to years ex. mins to hours to days to months to finally years.


The other questions follow a similar method.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Back
Top