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4 years ago

What type of circuit is illustrated?

Physics

1 answer:

oksano4ka [1.4K]4 years ago

5 0

Answer: c) an open series circuit

Explanation:

this is because the key is open

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Which of the following describes how the mechanical advantage of a simple machine affects the amount of force needed for work? A

Simora [160]

Answer:

The answer is a

Explanation:

5 0

3 years ago

An athlete starts running from rest such that he covers a distance of 5mm in 0.50s with a constant change in velocity per unit t

gulaghasi [49]

Answer:

50 s

Explanation:

Given:

Δx = 0.005 m

v₀ = 0 m/s

t = 0.50 s

Find: a

Δx = v₀ t + ½ at²

0.005 m = (0 m/s) (0.50 s) + ½ a (0.50 s)²

a = 0.04 m/s²

Given:

Δx = 50 m

v₀ = 0 m/s

a = 0.04 m/s²

Find: t

Δx = v₀ t + ½ at²

50 m = (0 m/s) t + ½ (0.04 m/s²) t²

t = 50 s

6 0

3 years ago

A uniform disk with a mass of 10 kg and a diatmer 0.5 m

ratelena [41]

It is 500000 kg in 0.5 mg

5 0

3 years ago

4 points

zubka84 [21]

(a) 25lx

(b) 11.11lx

<u>Explanation:</u>

Illuminance is inversely proportional to the square of the distance.

So,

$I = k\frac{1}{r^2}$

where, k is a constant

So,

(a)

If I = 100lx and r₂ = 2r Then,

$I_2 = k\frac{1}{(2r)^2}$

Dividing both the equation we get

$\frac{I_1}{I_2} = \frac{k}{r^2} X\frac{(2r)^2}{k} \\\\\frac{I_1}{I_2} = 4\\\\I_2 = \frac{I_1}{4}\\\\I_2 = \frac{100}{4} = 25lx$

When the distance is doubled then the illumination reduces by one- fourth and becomes 25lx

(b)

If I = 100lx and r₂ = 3r Then,

$I_2 = k\frac{1}{(3r)^2}$

Dividing equation 1 and 3 we get

$\frac{I_1}{I_2} = \frac{k}{r^2} X\frac{(3r)^2}{k} \\\\\frac{I_1}{I_2} = 9\\\\I_2 = \frac{I_1}{9}\\\\I_2 = \frac{100}{9} = 11.11lx$

When the distance is tripled then the illumination reduces by one- ninth and becomes 11.11lx

3 0

3 years ago

The wind in a certain area is blowing from east to west.

Mamont248 [21]

Answer:

The west is experiencing , lower, air pressure than the east

Explanation:

wind moves from high pressure to lower pressure

5 0

3 years ago

Read 2 more answers