Physics, 03.11.2020 06:10, Babygirljay1540
6. A balloon inflated with helium is able to float toward the ceiling because
a) the weight of the balloon is greater than the weight of the air displaced by the balloon.
b) the density of the balloon is less than the density of the atmosphere.
c) The kinetic energy inside the balloon is less than the kinetic energy of the atmosphere
d) the pressure of the gas inside the balloon is greater than the atmospheric pressure.
Answers: 3
Physics, 22.06.2019 14:20, jadahilbun01
A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.
Answers: 3
Physics, 22.06.2019 15:30, haileyjones732
Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.
Answers: 1
6. A balloon inflated with helium is able to float toward the ceiling because
a) the weight of the...
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