A sled is pulled across a horizontal snow surface. If a force of 40 N is being applied to the sled at an angle of 11° to the ground, what is the magnitude of the horizontal component of the force acting on the sled?

In what direction does the medium move relative to the direction of the wave? explain.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Properties seen when one one substance changes to another are known as properties