Suppose an object with a weight of 272 pounds displaces a spring 45.3333 feet if it is placed on the spring vertically. Suppose this spring is laid horizontally and has one end attached to a wall and the other end attached to the object is laid on the floor and that the friction of the mass with the floor (i. e., the damping constant) is 2 lbs⋅s/ft. Determine the mass m and the spring constant k. If needed, use g=32ft/s2. m= slugs. k= lbs/ft.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Which describes increasing the efficiency of energy resource

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)