Ahelicopter lifts a 84 kg astronaut 12 m vertically from the ocean by means of a cable. the acceleration of the astronaut is g/10. how much work is done on the astronaut by (a) the force from the helicopter and (b) the gravitational force on her? just before she reaches the helicopter, what are her (c) kinetic energy and (d) speed?
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Physics, 22.06.2019 07:00
Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block
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Physics, 22.06.2019 11:30
(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
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Physics, 22.06.2019 16:00
Apersons beliefs and general outlook, which act like filters on the information they receive are called ?
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Ahelicopter lifts a 84 kg astronaut 12 m vertically from the ocean by means of a cable. the accelera...
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