Physics, 08.10.2021 02:50, aesmithswhs
In a science lab Cash mixes two clear liquids together in a beaker. Bubbles are produced and a white solid forms and settles at the bottom. He plans to heat the beaker over a low heat and make more observations.
which statement is most likely correct?
A.) A physical change occurred so if cash heats up the white solid will disolve to form the origanal mixture of clear liquids.
B.) A physical change occurred so even if cash heats up the white solid will remain.
C.) A chemical change occurred so if cash heats up the white solid will disolve to form the origanal mixture of clear liquids
D.) A chemical change occurred so even if cash heats it the white solid will remain
Answers: 3
Physics, 22.06.2019 07:30, bell777
30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
Answers: 1
Physics, 22.06.2019 13:40, crayons18
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
Physics, 22.06.2019 14:30, ayoismeisalex
Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?
Answers: 3
In a science lab Cash mixes two clear liquids together in a beaker. Bubbles are produced and a white...
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