Conner is making breakfast. He stacks three pieces of toast on top of each other at different temperatures. (50,70, and 90). In what direction does thermal energy begin to flow between the pieces of toast? A- From the 70°C to the 90°C toast B- From the 90°C to the 70°C toast C- From the 50°C to the 70°C toast D- There is no thermal energy transfer

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?