Physics, 09.10.2019 04:00 1031kylepoe03
Vector a with arrow, which is directed along an x axis, is to be added to vector b with arrow, which has a magnitude of 9.0 m. the sum is a third vector that is directed along the y axis, with a magnitude that is 3.0 times that of a with arrow. what is the magnitude of a with arrow? (enter your answer to 4 significant figures.)
Answers: 1
Physics, 22.06.2019 07:30
Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
Answers: 1
Physics, 22.06.2019 10:50
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 16:00
What is friction? how does it affect the motion of an object?
Answers: 1
Physics, 23.06.2019 00:00
Based on this activity, is kinetic energy always transformed into potential energy?
Answers: 1
Vector a with arrow, which is directed along an x axis, is to be added to vector b with arrow, which...
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