All categories

3 years ago

Please help me with this question. BRAINLIEST if answered.

Physics

1 answer:

IceJOKER [234]3 years ago

8 0

... The top branch of the 3-branched parallel block ... the 9 and 6 in series ...
is equivalent to a single resistor of 15 ohms.

... The 3-branched parallel block boils down to (30, 10, and 15) in parallel.
That's (1/30 + 1/10 + 1/15)⁻¹ = 5 ohms.

... The 5-ohm-equivalent block and the 20-ohm resistor form a
voltage divider across the battery.
The voltage across the 5-ohm-equivalent block is (5/25 x 30v) = 6v .

... The top branch of the block is equivalent to a (9 + 6) = 15-ohmer.
With 6v across its ends, the current through that branch is (6/15) = 0.4A .

... With 0.4A flowing through it, the 9-ohm resistor is dissipating

I²R = (0.4A)² (9 ohms) = (0.16 A²) (9 ohms) = 1.44 W (choice-3)

You might be interested in

Galileo Galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to s

nalin [4]

Answer:

A) jupiter has orbiting moons

Explanation:

Btw I'm not sure abt it

3 0

3 years ago

Which are different ways ultrasound technology may be used? Check all that apply.

Kamila [148]

Answer:

Detecting kidney stones and cancer, visualizing fetus in the womb

Explanation:

Ultrasound technology can be used in detecting kidney stones and cancer throat and also visualizing a fetus in the womb. The use of ultrasound for detecting kidney stones started around 1961. Ultrasound has also been used in detecting various types of cancer including throat cancer. The use of ultrasound in knowing the gender of fetus in hospitals has been used for a long time. However, it's not used for cleaning dirty surgical tools. therefore, choice A, D and E apply.

Detecting kidney stones
Detecting throat cancer
Visualizing a fetus in the womb

8 0

3 years ago

Read 2 more answers

If a 3.1 kg ring of granite decreases in temperature 17.9C. What is the

steposvetlana [31]

I think it’s C but I’m not sure:/

6 0

3 years ago

A wildlife researcher is tracking a flock of geese. The geese fly 4.0km due west, then turn toward the north by 40 degrees and f

BaLLatris [955]

Answer:

(a). The distance from the initial position is 6.68 km.

(b). The magnitude of their displacement is 7.05 km.

Explanation:

Given that,

Geese fly 4.0 km due west, then turn to north by 40° and fly another 3.5 km.

(a). We need to calculate the distance from the initial position

Using formula of distance

$D=AB+BC\cos\theta$

Put the value into the formula

$D=4.0+3.5\cos40$

$D=6.68\ km$

(b). We need to calculate the magnitude of their displacement

Using formula of displacement

$AC=\sqrt{CD^2+AD^2}$

$AC=\sqrt{(3.5\sin40)^2+(6.68)^2}$

$AC=7.05\ Km$

Hence, (a). The distance from the initial position is 6.68 km.

(b). The magnitude of their displacement is 7.05 km.

8 0

3 years ago

Read 2 more answers

Describe the objects that make up Saturn's rings. Your answer should include the range of sizes of objects in the rings, and the

aniked [119]

Saturn's rings are made of billions of pieces of ice, dust and rocks. Some of these particles are as small as a grain of salt, while others are as big as houses.

4 0

3 years ago