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MaRussiya [10]
3 years ago
7

Please help

Physics
2 answers:
irga5000 [103]3 years ago
6 0

Answer:

the answer is B

Explanation:

Dababy told me it was right. If you get it wrong "Blame it on Baby" let's go

kvasek [131]3 years ago
4 0

Answer:

the answer is a ,The amount of work that is done is increased.

Explanation:

Please mark me brainliest

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Why does changing the shape of an object have no effect on the density?
iren [92.7K]
Because the object is still made of the same material 
Density is not affected by the weight and shape of an object its affected by how concentrated the atoms are in a given volume 
7 0
3 years ago
What happens to the density when water is poured into a empty glass?
san4es73 [151]

-- The density of the glass alone doesn't change.

-- The density of the water alone doesn't change.

-- The density of (the entire glass + everything IN IT) increases,
because the part that used to be air (with very low density) is
changed to water (with much higher density than the air had). 
3 0
3 years ago
Sonar is a device that uses reflected sound waves to measure underwater depths. If a sonar signal has a frequency of 288 Hz and
mart [117]

Answer:

5.03 m

Explanation:

The wavelength of a wave is given by

\lambda=\frac{v}{f}

where

v is the speed of the wave

f is the frequency of the wave

For the sonar signal in this problem,

f=288 Hz

v=1.45\cdot 10^3 m/s

Substituting into the equation, we find the wavelength:

\lambda=\frac{1.45\cdot 10^3 m/s}{288 Hz}=5.03 m

3 0
4 years ago
To determine a waves' frequency, you must know the
kykrilka [37]
B. number of oscillations in a given period of time.
7 0
4 years ago
Read 2 more answers
A man jogs at a velocity of 2.5 m/s west for 1,200 s. He then walks at a velocity 1.0 m/s east for 500 s and then stops to rest
olganol [36]

Speed of man towards West =2.5 m/s

Time to travel in the given direction = 1200 s

Total displacement towards west

d_1 = v_1 t

d_1 = 2.5 \times 1200 = 3000 m

Now speed of man towards East = 1 m/s

time to travel in east direction = 500 s

total displacement towards East

d_2 = v_2 t

d_2 = 1 \times 500 = 500 m

Now total displacement will be

d = d_1 - d_2

d = 3000 - 500 = 2500 m

so it is 2500 m towards west

5 0
3 years ago
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