The chart shows the voltage of four electric currents.
2 answers:
Answer:
Current X has a lower potential difference than Current Y.
Explanation:
The table is as follows:
Current Volts (V)
W 9.0
X 1.5
Y 3.0
Z 4.5
There are two quantities represented in the table:
1) Current: the current is the rate of flow of electric charge in a circuit. It is given by
where q is the amount of charge that passes a given point of a circuit in a time t. It is measured in Ampere (A).
2) Potential difference: the potential difference is the difference in electric potential between two points of a circuit. The potential difference is responsible for "pushing" the electrons through the circuit and producing a current. It is measured in Volts (V).
From the table, we see that
Current X has a lower potential difference (1.5 Volts) than Current Y (3.0 Volts)
So the correct choice is
Current X has a lower potential difference than Current Y.
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Answer:
The velocity of the collar will be 3.076 ft/s
Explanation:
Given data
weight of the disk, Wa = 20lb
weight of rod BC, Wbc = 4lb
weight of collar, Wc = 1lb
Considering the equation of equilibrium
Vb = 1.5Wbc
Wa = 1.875 Wbc
to calculate the velocity of the collar using energy conservation equation
T1 + V1 = T2 + V2
=>
=>
=>
Wbc = 1.18rad/sec
i.e.
= 3.076 ft/ s
A = horizontal displacement of the humming bird = 1.2 m
B = vertical displacement of the humming bird = 1.4 m
C = net displacement of the humming bird from initial to final position = ?
In the triangle drawn , Using Pythagorean theorem
C = √(A² + B²)
inserting the values
C = √(1.2² + 1.4²)
C = √(1.44 + 1.96)
C = √(3.4)
C = 1.4 m
Hence the net displacement of hummingbird comes out to be 1.4 m
