Answer:
Explanation:
The displacement current is given by the expression;
where
c. Electrons flow from sphere B to sphere
___ 13. Most electrical wires are covered with plastic or rubber. The wires are covered with plastic or rubber because
those materials
a. are conductors of electricity. c. are not conductors of electricity.
b. make complete electric circuits. d. make the electricity move quickly.
____ 14. The loss of static electricity as electric charges transfer from one object to another is called
a. friction. b. conduction. c. induction. d. static discharge.
Answer:
mass of other block is 0.7142 kg
Explanation:
given data
mass = 5.0 kg
accelerates downward =
to find out
mass of other block
solution
we will apply here Newton 2nd law that is
force ∑Fy = mass × acceleration
so
t - mg = ma .............1
t = 5 ( 9.8 + )
t = 12.25 N
so other block mass is from equation 1
t - mg = ma
t = m ( g+a)
12.25 = m ( g + )
12.25 = m ( 9.8
m = 0.7142 kg
mass of other block is 0.7142 kg
Science is open to change because scientists agree that there are no absolute truths, only the best explanations for the data
there are specifically two cases when science can change: -new data is discovered (for example new skeleton makes us revise the known history of homo species)
-a new model is proposed that fits the data better (such as the heliocentric model of Copernicus)
Answer:
Options A and B.
Explanation:
Gravitational acceleration, initial height, intial speed and time are required to determine final speed. The option D is incorrect, since speed varies in time. Option C is dimentionally wrong.
The correct strategy is calculating the initial height from option B. Later, substituting time in equation A to derive an expression of the final velocity in terms of position. Hence, the required equations are options A and B.