Physics, 18.09.2019 19:00 girlysimbelieve
Asolid concrete block weighs 140 n and is resting on the ground. its dimensions are 0.370 m x 0.150 m x 0.0820 m. a number of identical blocks are stacked on top of this one. what is the smallest number of whole bricks (including the one on the ground) that can be stacked so that their weight creates a pressure of at least two atmospheres on the ground beneath the first block? (hint: first decide which face of the brick is in contact with the ground.)
Answers: 2
Physics, 22.06.2019 16:30
Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
Answers: 2
Physics, 23.06.2019 02:30
Based on its type of chemical bond, which of the following has the highest boiling point? potassium chloride ethyl alcohol water ammonia
Answers: 1
Physics, 23.06.2019 03:50
Asimple electrochemical cell contains two electrodes? t or f
Answers: 2
Asolid concrete block weighs 140 n and is resting on the ground. its dimensions are 0.370 m x 0.150...
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