Recent content by mogibb1

Homework Statement I know that if an object radiates more energy than it absorbs its temperature will decrease, but what I'm trying to see is whether or not its thermal energy also decreases (I'm thinking yes, but not 100% sure). Homework Equations The Attempt at a Solution

Sorry to be so much trouble, but I'm not good with word problems and having to figure out what to plug into an equation. Thank you very much for your time and assitance.

I appreciate your help. I really don't have much in the way of a formula (unless Archimedes principle is it) to go by and I'm trying to figure this out. The 400kg crate will displace 400kg of the water, isn't that right? If I take the 400kg crate and divide it by 1000kg/m^3 water I get...

To make more sense, here are the units: 400 kg * 10 m/s2 = 4000 kg m/s2 4000 kg m/s2 / 1000 g = 4 cm I now I need to work more on the units/conversions, but I would like to know if my thinking is correct or not on this. Thank you.

Ok, so this is what I believe to be the answer: 400kg * 10 (for gravity) = 4000 / 1000 kg/m3 = 4cm

Homework Statement A rectangular barge, 5m long and 2m wide, floats in fresh water. Suppose that a 400-kg crate of auto parts is loaded onto the barge. Show that the barge floats 4cm deeper. Homework Equations Archimedes Principle P=m/v The Attempt at a Solution I know that the...

Ok so it would be: Initial Velocity Gravity | Time | Time | | | | X=10 m/s (3)+1/2(10)32 x=30 m/s +5(9) x=75m

V=V0+at This may not be it, but I'm trying to make sense of this stuff. My book doesn't give very much help.

Oh. I don't know what the formula is then.

d=1/2gt2 or d=5t2

At 10 m/s the distance will be: d=5(1)2 d=5m for 20 m/s the distance will be: d=5(2)2 d=20m for 30 m/s the distance will be: d=5(3)2 d=45m Because she throws it an initial velocity of 10 m/s, will it still be 10 m/s for the first second, 20 m/s for second second, and...

Homework Statement Aunt Minnie drops a penny into a wishing well and it falls for 3 seconds before hitting the water. How far down is the water surface? Homework Equations d = 5t2 d = 5(3)2 d = 45 m Followup question: Aunt Minnie didn't get her wish so she goes to a deeper...

Homework Statement I copied these formulas down that my professor had written on the board, but I have no idea how they may apply to velocity or acceleration. Homework Equations v=at+v0 v-v0=a(t-t0) v1=10(1)+0 = 10 m/s I believe that the 10 represents gravity, but don't...

Ok. I think I may have it now. I appreciate the help. :) This is my first week in this class and am a little overwhelmed but I shall persevere. Thanks again.

The acceleration due to Earth gravity is usually denoted g, its value is about 9.8 m/s2. Can you explain what acceleration has to do with velocity and what the unit (m/s/s) means? I know that velocity is speed and direction. I think that the (m/s/s) is meters per second squared...which is...