Answer:
They're asking you to explain how the race went bit you have to roughly explain just by looking at the graph.
Explanation:
Alberta- She didn't start at the beginning but now she's running as fast as she can. Wow, she's gaining speed like crazy and may be the fastest contestant. (The line is extremely straight which means she gains speed fast and runs very quick at a constant speed)
Betsy- Betsy is starting slowly but surely and speeds up. She gets to the finish quite fast. (The line has a slanted slope at first but gets very straight and vertical eventually which means there is a high speed)
Carla- Carla is starting the race at 500 meters but she is running very smoothly and constantly without slowing down. (I say this because you can see on the distance line that she starts at the middle and for the speed you can see the line is straight which means its constant.)
Dora- Dora has a constant page and is running quite well but ooh she stops. Maybe she's already tired of running but she's got a long way to go. She's running again! A fast and constant pace just like at the start. (You can see at line is straight which means a constant pace but then the line stops which means she stopped running. Then at the end you can see a constant pace again)
Answer:
the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system.
Explanation:
Blood velocity is not the same in all areas. In the capillaries it is where there is less speed, while in arteries and veins it is quite similar. This is due to the cross-sectional area of each of the vessels. It is a mistake to think of a vein, artery or capillary individually. We have to put them all together to see that the total area of the capillaries is 100 times larger than that of the arteries or veins. Blood flowing through arteries or veins is going faster because there is less area.
Blood velocity is inversely proportional to each of the areas of its territories. The greater the area, the lower the speed.
Answer:
C. A spring is stretched.
Explanation:
Kinetic energy is the energy of motion, potential energy is stored energy. The motion of stretching the spring is kinetic, the energy it has before it's released is potential.
Answer:
829000 square centimeters
Explanation:
looked it up
