D.Positive charges are attracted to negative charges.
Answer:
D. Positive charges are attracted to negative charges.
Explanation:
The interaction between two like-charged objects is repulsive. The interaction between two oppositely charged objects is attractive. ... Positively charged objects and neutral objects attract each other; and negatively charged objects and neutral objects attract each other.
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Final Velocity
(m/s)
29
Change in
Time (s)
Initial Velocity
(m/s)
11
10
12
20
W
X
Y
IZ
Which object has the greatest acceleration?
34
Ow
OZ
Answer:
Y
Explanation:
The answer is y because,
W: (29-11)/6 = 3
X: (34-10)/12 =2
Y: (40-12)/7=4
Z= (28-20)/8=1
4 is greater then all, therefore the answer is Y
Answer:
X
Explanation:
v=u+at but t is constant so
a=v-u
for x
a=29-10
a=19
which marks the greater acceleration
coal burning
B.
nuclear power
C.
solar heating
Solar heating is the system composed of a fluid system to move the heat from the collector to its point of usage and a reservoir to stock the heat
Explanation:
The options given here like coal burning uses solid material as the source to heat and to generate energy. Similarly, nuclear power also requires solid particles like atoms or neutrons to strike the moderators forming energy.
In both of these cases, fluid system is present but it is used completely as coolant and to maintain the temperature. Thus, the remaining system that is solar heating has been done for water tanks where the fluid as water is used to move the heat from its collector to its point of usage. Even in solar system it is used as reservoir to stock the heat.
B.Insulator
C.Resistor
D.Conductor