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Leona [35]
4 years ago
9

How much resistance does led bulb in a 4.5 volt flashlight provide if it draws .05 amps of current

Physics
1 answer:
marishachu [46]4 years ago
5 0

Answer:

90 Ω

Explanation:

Ohm's law states voltage is the product of current and resistance:

V = IR

Given V = 4.5 V and I = 0.05 A:

4.5 V = (0.05 A) R

R = 90 Ω

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A 13 g rubber stopper is swung in a horizontal circle with a radius of 0.85 m with a period of 0.65 s. (a) How fast is the stopp
NISA [10]

Explanation:

(a) v = 2π r / t

v = 2π (0.85 m) / (0.65 s)

v = 8.2 m/s

(b) a = v² / r

a = (8.2 m/s)² / (0.85 m)

a = 79 m/s²

(c) F = ma

F = (0.013 kg) (79 m/s²)

F = 1.0 N

8 0
4 years ago
The pilot of an airplane flying at an elevation of 5000 feet sights two trees that are 300 feet apart. If the angle of depressio
OLEGan [10]

Answer:

32°

Explanation:

From the diagrammatic representation of the question,

Point A is the pilot point of view from the airplane

Point C is the foot of the first tree

Point D is the foot of the second tree

Line AB is the height of the airplane from the ground level.

Line CD is the distance between the two trees

Considering ΔABC,

tan 33° = \frac{5000}{BC}

BC = 5000 / tan 33°

BC = \frac{5000}{0.6494}

BC = 7,699.41 feet

BD = BC + CD

BD = 7,699.41 + 300

BD = 7,999.41 feet

Considering ΔABD,

tan θ = \frac{AB}{BD}

tan θ = \frac{5000}{7,999.41}

tan θ = 0.6250

θ = tan⁻¹ 0.6250

θ = 32°

7 0
3 years ago
A fish cannot be killed by throwing an arrow into the water why?​
olga55 [171]

Answer:

a fish cannot be killed by throwing an arrow into the water because you have to throw the arrow at the fish not just in the water….

Explanation:

common sense TwT


duhhh

3 0
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The answer should be soil
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