Physics, 26.03.2020 05:51 allsherm23
Loudspeakers can produce intense sounds with surprisingly small energy input in spite of their low efficiencies. Calculate the power input needed (in W) to produce a 89.6 dB sound intensity level for a 13.0 cm diameter speaker that has an efficiency of 2.06%. (This value is the sound intensity level right at the speaker.)
Answers: 3
Physics, 22.06.2019 02:00
In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain
Answers: 2
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 12:00
Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?
Answers: 3
Loudspeakers can produce intense sounds with surprisingly small energy input in spite of their low e...
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Biology, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40
Mathematics, 19.06.2021 02:40