Isostatic rebound?how much?New England?
148711
This is an interesting question because there has been recent evidence found using geodetic surveys in southern and central Lousiana that that area is still falling as a possible result of rebound from the Wisconsin glaciation. \n\nI found a good map of geodetic measurements at Northwestern University.  It shows current measured rates of rebound in New England and Canada. It looks like New England is along the pivot line, with the coastal parts still falliing and inland areas rising. The rates are hard to read from the map but appear to be a few mm/year. \nhttp://www.earth.northwestern.edu/research/geodesy.html\n\nI'm also including some links related to the topic that I ran across while trying to find this map.
682825
how does it bounce without springs?
918781
Where is your freebody diagram? There are other forces acting on the block than just gravity...\n\nGood Luck
375016
I reckon it's a pull; I've found if I fall down outside a pub, I hit the floor, no matter whether it's in Greenwich, UK, or Australia.\nI have to make an assumption, however, that the Earth is round, which seems reasonable as I've been around it a few times.
568702
Do you mean "What is it when the deification comes in contact with a rotating isolator?" I think that is when the $h!t has hit the fan.
13755
im going to assume this ia an elastic collision (when the objects bounce off of each other).\nyou just need the formula for conservation of momentum. p=mv (momentum = mass times velocity)  conservation of momentum says that (assuming no friction) the total momentum before the collision would equal the total momentum after the collision.  in other words mv=mv.  now, there are two balls so your formula looks like this:\n mv+mv = mv+mv.  the reason it has 2 "mv" 's  on each side, is because there are two balls.  now the second mv on the first side can be taken out since the velocity is 0, so mass times velocity would be 0. that means mv + 0 = mv + mv  so the mass times velocity of the first ball before the collision equals the mass times velocity of the first ball after plus the mass times velocity of the second ball after.  this would look like this:\nmv= mv + mv\n(1kg)(10m/s)=(1kg)v1 + (2kg)v2 (where the 1 and 2 just represent the velocities of the first and second balls respectively.)\nso basically:\n10=v1 + 2v2\nyou would need one of the velocities in order to solve for the other. there has to be more to the problem to either give you one of these velocities, or enough information to solve for it somehow... the balls would move in opposite directions.\n\nhowever, we can solve this problem if it was an inelastic collision(meaning the balls stick together).  if this were the case, then (if this is a problem for class) it probably would have said it was inelastic and it probably isnt because balls generally bounce off of each other unless they're sticky or balls of clay or something, but lets say it was inelastic just in case so i can solve it this way for you.  if it was inelastic then mv + mv=mv so the mv of the first ball plus the mv of the second ball(which is zero like before because the ball is at rest so v is zero) equals the combined masses of the balls plus the new velocity. so mv + 0 = mv, because we have only one object(because they move as one object if they stick).  the combined masses of the balls is 1kg + 2kg = 3kg so now:\nmv=mv\n(1kg)(10m/s) = (3kg)v\nsolving for v we get 10/3 or 3.3333.  they would be moving in the same direction as the initial ball.
652500
Answer A) Small size & rocky surfaces
1013534
I m not sure. but may be ISO has this answer...
355325
Newtons, or sometimes kilograms
812295
Er, gravity really has nothing to do with this question. Fk = coefficient*Fn.  Fn = mg.  -19.6 is your Normal Force.  But yea, the answer is correct.
209689
mass in motion stays in motion unless disrupted by another force!
26908
When a basketball bounces there is a continuous conversion between Kinetic and Potential energies. \nAt maximum height of the bounce, Potential Energy (P.E.) is maximum and Kinetic Energy(K.E) is minimum or zero.At the floor level, K.E is maximum and P.E is minimum or zero. What is really relevant here is that the Total Energy of the system, E, which is the sum of K.E and P.E remains constant
863216
It has to do more with the material of the ground rather than with the surface. It all depends on it's elastic coeficient. The least elastic, the more it will bounce because of the transmission of the kinetic energy.
905049
First assume that we neglecting any losses from air resistance or internal friction.\n\nWith that simplification, imagine two states:\n1) you are on the bridge 100m above the water and at rest\n2) you are suspended by the spring at its point of maximum extension, and therefore with zero velocity\n\nSince we assumed that there were no losses, the energy of both of these states is equal. Where is that energy located?\n -->1: your gravitational potential energy (no kinetic energy, no stored elastic energy)\n--> 2: your remaining gravitational potential energy, and the stored elastic energy in the spring (by definition, no kinetic energy)\n\nSo what has happened is that the spring has stored elastic potential energy that is equal to your loss of gravitiational potential energy. That's the only way the energies of the two states are the same.\n\nNow you can set up some equations. Let's say that you start at height H0 and end up at height H1.\n\nchange in PEg= m * g * (H1-H0)\nchange in PEk = 1/2 * k * [(H1-H0)-30m]^2\nwhere we have accounted for the 30m long unstretched length of the spring.\n\nNow by observing that -PEg = PEk, and plugging in the given values for m and k and the known value for g, you can readily solve for the change in height (H1-H0) (it should be < 0) It's a quadratic, so you expect to find one answer that is not physically realizable - reject that one, and select the other one.\n\nDoes that help?
233618
1 mass\n2 magnitude of separation
1187434
I think that's dalton's law.  Whoever came up with it, the pressure is additive.  So convert so everything is in the same units, multiply by the percent, add, and then compare to the answers.  I bet it's more fun than you predict.  Whooo!  Conversion factors!  I don't want to take that kind of enjoyment away, so get cracking!
618210
Not due to gravitational pull?!