An asteroid with a mass of 5.0 x 105 kg collides with the earth and slides horizontally along the ground without bouncing (not actually possible but just pretend). the velocity of the asteroid before impact is 1.1 x 104 m/s and the coefficient of kinetic friction between the asteroid and the earth is 1.80. how much energy is lost due to friction between the asteroid and the earth after the asteroid has come to rest?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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)

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?