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zhenek [66]
4 years ago
12

Choose the appropriate word choices below that correctly complete the blanks in the following three sentences: At the beginning,

the object is at the origin and moving to the left. In the first half of its motion, the object moves to the left with ________ velocity. Then, the motion of the object changes. In the second half of its motion, the object________ due to a ________ acceleration that is ________ in magnitude.
Physics
1 answer:
Pepsi [2]4 years ago
5 0

Answer:

Constant

Accelerates

Constant

Positive

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Answer:

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Gamma waves

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The intensity level of a "Super-Silent" power lawn mower at a distance of 1.0 m is 100 dB. You wake up one morning to find that
OLEGan [10]

Answer: The intensity level of sound in the bedroom is 80dB

Explanation:

Intensity of lawn mower at r=1m is 100dB

Beta1= 10dBlog(I1/Io)

100dB= 10dB log(I1/Io)

10^10= I1/Io

I1= Io(10^10)

10^12)×(10^10)= I1

I1=10^-2w/m^2

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I2/I1=(r1/r2)^2 =(1/20)^2

I2= I1(1/400)

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Intensity of 4 lown mowers at 20m fro. Window

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= 10^-4/10^-12

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6 0
3 years ago
Describe the principle of conversation of energy:
exis [7]

Answer: Energy can neither be created nor destroyed, rather it is converted from one form to another

Explanation:

The principle of conversation of energy explains how energy is conserved in nature by being converted from one form to another such that no energy is created nor destroyed.

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- electrical pressing iron that converts electrical energy to heat energy

- solar panels that converts solar energy to electrical energy

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