Physics, 04.02.2020 15:49, ytopete13p15c8p
A50-cm3 block of wood is floating partially submerged in water, and a 50-cm3 block of iron is totally submerged in water. which block has the greater buoyant force on it?
a) the wood
b) the iron
c) both have the same buoyant force.
d) the answer cannot be determined without knowing the densities of the blocks.
Answers: 2
Physics, 22.06.2019 12:00, laurenppylant
If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
Answers: 1
Physics, 22.06.2019 19:30, rprest00
Amass m = 74 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius r = 18.4 m and finally a flat straight section at the same height as the center of the loop (18.4 m off the ground). since the mass would not make it around the loop if released from the height of the top of the loop (do you know why? ) it must be released above the top of the loop-the-loop height. (assume the mass never leaves the smooth track at any point on its path.) 1. what is the minimum speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track? 2. what height above the ground must the mass begin to make it around the loop-the-loop? 3. if the mass has just enough speed to make it around the loop without leaving the track, what will its speed be at the bottom of the loop? 4. if the mass has just enough speed to make it around the loop without leaving the track, what is its speed at the final flat level (18.4 m off the ground)? 5. now a spring with spring constant k = 15600 n/m is used on the final flat surface to stop the mass. how far does the spring compress?
Answers: 3
A50-cm3 block of wood is floating partially submerged in water, and a 50-cm3 block of iron is totall...
Social Studies, 26.12.2019 13:31
History, 26.12.2019 13:31
English, 26.12.2019 13:31
Biology, 26.12.2019 13:31
Mathematics, 26.12.2019 13:31
Mathematics, 26.12.2019 13:31
Mathematics, 26.12.2019 13:31
Mathematics, 26.12.2019 13:31