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3 years ago

What is the wavelength of a wave with a frequency of 330 Hz and a speed of

Physics

1 answer:

k0ka [10]3 years ago

5 0

Answer:

Explanation:

wavelength can be obtained by speed of the wave divided by its frequency

$\frac{343}{330}$

1.04m

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A light bulb uses 0.5 amperes from a source of 120 volts. How much power is used by the bulb?

Sladkaya [172]

Power = voltage(V) * current(I)

= 120 * 0.5

Power = 60 watts

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2 years ago

What are some similarities and differences between physical and chemical weathering

Wewaii [24]

Physical Weathering involves rocks breaking through contact with atmospheric conditions, but Chemical Weathering breaks down rocks with the effect of certain chemicals. They both made rocks and other sediments have cracks in them.Physical and Chemical Weathering both have differences. Here are some of them

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3 years ago

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A person uses eyeglasses with a power of -5.5 D. The lenses are 1.8 cm from the person's eye. What is the furthest this person c

bija089 [108]

Answer:

The correct answer is option B.

Explanation:

$power(P)=\frac{1}{f}$

f = focal length

P = -5.5 D (negative power means that lens is concave)

$f=\frac{1}{P}=\frac{1}{-5.5 D}= -0.1818 m$

1 m = 100 cm

f = -0.1818 m = -0.1818 × 100 cm= -18.18 cm

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}$

$u=\infty$

$\frac{1}{-18.18 cm}=\frac{1}{\infty }+\frac{1}{v}$

v = -18.18 cm

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But closest answer from the given options is option B.Hence, 20 cm is the correct answer.

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2 years ago

You are going sledding with your little cousins during a well-earned break. You push your 23 kg cousin so that they have a speed

pogonyaev

Answer:

kinetic energy = 414 J

Explanation:

given data

mass = 23 kg

speed = 6 m/s

height = 17 m

to find out

kinetic energy

solution

we get kinetic energy that is express as

kinetic energy = 0.5 × m × v² ..........................1

here m is mass and v is speed so

put here value we get kinetic energy

kinetic energy = 0.5 × 23 × 6²

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3 years ago

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A car came to a stop from a speed of 35 m/s in a time of 8.1 seconds. What was the acceleration of the car?

uranmaximum [27]

Simply subtract the two velocities and divide by 8.1,

$\frac{0 - 35}{8.1} = - 4.32$

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

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2 years ago

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