• Was Iraq better when saddam Hussein was in power?

    Of course I mean aside from the terrorism he afflicted on those who defied his rule. Seems to me like the economy was better for Iraq in the 70s and 80s due to them nationalizing their oil, and this is also when they built much of their infrastructure. Now it seems like a poverty ridden dump
    Of course I mean aside from the terrorism he afflicted on those who defied his rule. Seems to me like the economy was better for Iraq in the 70s and 80s due to them nationalizing their oil, and this is also when they built much of their infrastructure. Now it seems like a poverty ridden dump
    3 answers · Politics · 6 months ago
  • How do solar sails work?

    I know what you are going to say, “google it”. But according to google, solar sails work by harnessing the light. each particle of light has momentum, and it uses these to accelerate. but i thought that momentum was equal to mass times velocity, and according to the laws of physics and einstein’s law of relativity, photons have no mass? therefore... show more
    I know what you are going to say, “google it”. But according to google, solar sails work by harnessing the light. each particle of light has momentum, and it uses these to accelerate. but i thought that momentum was equal to mass times velocity, and according to the laws of physics and einstein’s law of relativity, photons have no mass? therefore their momentum is 0 because 0 times the speed of light is 0? i am confused, am i missing something?
    13 answers · Physics · 6 months ago
  • Physics Momentum Easy?

    What is the change in momentum of a 56.7 g tennis ball travelling at 25m/s west if it hits a practice wall and rebounds with the same speed? I swear the answer is 0 but on the answer key it says 2.8 kgm/s east. shouldnt momentum be dependent on mass and velocity? if both of those values stay the same shouldnt the impulse (change in momentum) stay... show more
    What is the change in momentum of a 56.7 g tennis ball travelling at 25m/s west if it hits a practice wall and rebounds with the same speed? I swear the answer is 0 but on the answer key it says 2.8 kgm/s east. shouldnt momentum be dependent on mass and velocity? if both of those values stay the same shouldnt the impulse (change in momentum) stay the same? Thanks
    1 answer · Physics · 8 months ago
  • Physics 20 Circular Motion?

    a 0.250 kg mass is twirled on a string in a horizontal circle (radius = 0.700m) at a rate of 90.0 tpm. Calculate the speed of the mass. I got 6.59m/s but im not sure, i didnt use the magnitude of mass at all which is strange
    a 0.250 kg mass is twirled on a string in a horizontal circle (radius = 0.700m) at a rate of 90.0 tpm. Calculate the speed of the mass. I got 6.59m/s but im not sure, i didnt use the magnitude of mass at all which is strange
    4 answers · Physics · 12 months ago
  • Physics 20 Gravitation?

    Three objects, mass A is 22.0 kg, mass B is 30.0 kg, while mass C is 25.0 kg, are placed in a straight line as shown in the diagram. If distance AB is 0.200 m and distance BC is 0.150 m, then find the net force on C. Thanks, I was thinking adding the FG between C and A and C and B, which would give Fnet? not sure though..
    Three objects, mass A is 22.0 kg, mass B is 30.0 kg, while mass C is 25.0 kg, are placed in a straight line as shown in the diagram. If distance AB is 0.200 m and distance BC is 0.150 m, then find the net force on C. Thanks, I was thinking adding the FG between C and A and C and B, which would give Fnet? not sure though..
    2 answers · Physics · 12 months ago
  • Thing on rear window/roof of car?

    I have a piece of rubber/plastic on the roof and rear window of my 2013 dodge dart rallye. it is very annoying because it rattles every time there is bass in a song i am playing, and i was wondering what its purpose was and if i can take it off because it is so damn annoying. for some reason my phone isnt letting me upload a picture, i cant think of... show more
    I have a piece of rubber/plastic on the roof and rear window of my 2013 dodge dart rallye. it is very annoying because it rattles every time there is bass in a song i am playing, and i was wondering what its purpose was and if i can take it off because it is so damn annoying. for some reason my phone isnt letting me upload a picture, i cant think of what it is? it is directly above the back middle seat and is rectangular, maybe other dodge owners could help me.
    1 answer · Dodge · 12 months ago
  • Basic Physics 20 Homework Help: Newton And Forces?

    If you use a horizontal force of 45N to slide a 15kg crate at a constant velocity across a floor, then what is the coefficient of sliding friction between the crate and the floor? My answer: -0.306 Thanks
    If you use a horizontal force of 45N to slide a 15kg crate at a constant velocity across a floor, then what is the coefficient of sliding friction between the crate and the floor? My answer: -0.306 Thanks
    1 answer · Physics · 1 year ago
  • How to remove marker from piano?

    Hi. I made some marks on my piano keys with a black dry erase marker and a red dry erase marker to help me learn arpeggios. I have learned them, and the black marker came off just fine, but the red marker is stuck on there. I used nail Polish remover and EXPO dry erase board cleaner, which dimmed down the red but it is still there and visible. How... show more
    Hi. I made some marks on my piano keys with a black dry erase marker and a red dry erase marker to help me learn arpeggios. I have learned them, and the black marker came off just fine, but the red marker is stuck on there. I used nail Polish remover and EXPO dry erase board cleaner, which dimmed down the red but it is still there and visible. How can I get it off? I was thinking vodka or something, but how else?
    3 answers · Cleaning & Laundry · 3 years ago
  • How to move a large aquarium?

    I am renovating my room, and my 75 gallon fish tank needs to be moved a few feet. How do I do this without emptying it and having to restart the bacteria growth period? Because the fish most likely will not survive if I empty it and put all new water in, even with added bacteria suplements. Is there a way to move it with only draining half of the... show more
    I am renovating my room, and my 75 gallon fish tank needs to be moved a few feet. How do I do this without emptying it and having to restart the bacteria growth period? Because the fish most likely will not survive if I empty it and put all new water in, even with added bacteria suplements. Is there a way to move it with only draining half of the water or a quarter? Looking for.creative answers.. thanks
    4 answers · Fish · 3 years ago
  • What kind of algae is growing on my aquarium glass?

    A strange algae is growing on my cichlid tank glass. It doesn t appear to grow on any of the 4 tank walls, but rather the removable glass "roof" of the tank. Whenever I take the canopy off for maitenence or water changes, the accumulated water that has evaporated onto the glass roof appears to be blue in colour. When I Scrub off the algae,... show more
    A strange algae is growing on my cichlid tank glass. It doesn t appear to grow on any of the 4 tank walls, but rather the removable glass "roof" of the tank. Whenever I take the canopy off for maitenence or water changes, the accumulated water that has evaporated onto the glass roof appears to be blue in colour. When I Scrub off the algae, it just comes back. I am currently using disinfectants to see if it works, but I am just wondering what kind of algae this is?
    1 answer · Fish · 3 years ago