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3 years ago

28. In the diagram above which symbol represents the light bulb ?

Physics

2 answers:

allochka39001 [22]3 years ago

4 0

Answer:

Light bulb - B

Battery - A

Explanation:

The electric circuit consists of a battery, an electric bulb, a switch etc. A battery act as a source of electric power. Its positive terminal is called cathode and its negative terminal is called as anode.

(28) In the given figure, B represents the light bulb.

(29) In the given figure, A represents the battery. There are some rechargeable batteries like lithium batteries, Nickel cadmium etc.

Tanzania [10]3 years ago

3 0

28. It's B
29. It's A

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In order to open the clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the

Vedmedyk [2.9K]

Answer:

2.2 s

Explanation:

Hi!

Let's consider the origin of the coordinate system at the ground, and consider that the clam starts with zero velocity, the equation of motion of the clam is given by

$x(t) = 23.1 m - \frac{1}{2}(9.8 m/s^2) t^2$

We are looking for a time t for which x(t) = 0

$0 = 23.1 m - (4.9 m/s^2) t^2$

Solving for t:

$t = \sqrt{\frac{23.1}{4.9}} s = 2.17124 s$

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3 years ago

A jet airliner moving initially at 889 mph

Eduardwww [97]

Answer:

1500 mph

Explanation:

Take east to be +x and north to be +y.

The x component of the velocity is:

vₓ = 889 cos 0° + 830 cos 59°

vₓ = 1316.5 mph

The y component of the velocity is:

vᵧ = 889 sin 0° + 830 sin 59°

vᵧ = 711.4 mph

The speed is found with Pythagorean theorem:

v² = vₓ² + vᵧ²

v² = (1316.5 mph)² + (711.4 mph)²

v = 1496 mph

Rounded to two significant figures, the jet's speed relative to the ground is 1500 mph.

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3 years ago

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jek_recluse [69]

The moon, because the acceleration due to gravity is less.

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2 years ago

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3 years ago

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Yuri [45]

Answer:

Explanation:

That is is the equator, prolly

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2 years ago