The brick wall (of thermal conductivity 0.77 W/m · ◦ C) of a building has dimensions of 3 m by 15 m and is 7 cm thick. How much heat flows through the wall in a 8.4 h period when the average inside and outside temperatures are, respectively, 29◦C and 5◦C? Answer in units of MJ.

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.