Answer:
18 V
Explanation:
The 3Ω resistor and the 6Ω resistor are in parallel, so the voltage difference across them is equal.
V = IR
V = (2 A) (3 Ω)
V = 6 V
So the current going through the 6Ω resistor is:
V = IR
6 V = I (6 Ω)
I = 1 A
Therefore, the current going through the 4Ω resistor is the sum:
I = 2 A + 1 A
I = 3 A
The voltage drop across the 4Ω resistor is:
V = IR
V = (3 A) (4 Ω)
V = 12 V
So the total voltage difference between K and L is:
V = 6 V + 12 V
V = 18 V
So we want to know what is the distance d of the object from the lens if the height of the object is h=6 cm, focal length of the lens is f=5 cm and the distance d=15 cm is the distance of the object from the lens. From the formula for the convex lens 1/f=(1/D + 1/d) where D is the distance of the image from the lens we can get D after solving for D: 1/D=(1/f) - (1/d),
1/D=(1/5)-(1/15)=0.2-0,06667=0.13333 so f=1/0.13333=7.500187 cm. Rounded to the nearest hundredth D=7.50 cm. That is very close to 7.69 cm so the correct answer is the third one.
How do you mean? I mean, physic professors teach physics...
The correct answer to this is choice B . sociocultural
Answer:
131.3 m
Explanation:
Period of pendulum depends on the length of the pendulum. It can be calculated by using the formula:
Thus, tower is 131.3 m tall.