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Lilit [14]
3 years ago
11

Mickey had three substances. He hit each of them with a hammer. A red

Physics
1 answer:
Verizon [17]3 years ago
6 0

Answer:

A & D

Explanation:

:p

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A 5.75 × 107 kg battle ship originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 550 m/s. show ans
prohojiy [21]

Answer:

-0.01052 m/s

Explanation:

M = mass of ship = 5.75\times 10^7\ kg

m = mass of shell = 1100 kg

v = velocity of shell = 550 m/s

u = recoil velocity of ship

As linear momentum is conserved

(M - m)u=-mv\\\Rightarrow u=-\frac{mv}{M - m}\\\Rightarrow u=-\frac{1100\times 550}{5.75\times 10^7+1100}\\\Rightarrow u=-0.01052\ m/s

The recoil velocity of the ship taking the firing direction to be the positive direction is -0.01052 m/s

6 0
3 years ago
If a sound travels 343m/s through air and has a frequency of 800Hz, what would the wavelength be of the same sound traveling thr
VARVARA [1.3K]

Answer:

0.625m

Explanation:

Now Velocity of a wave ,V = frequency × wavelength

Wavelength =velocity /frequency

=500/800 =0.625m

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3 years ago
Unlike a physical change, a chemical change is not easily what?
krok68 [10]

because a chemical change takes time

8 0
3 years ago
Need help please this is physics work
SashulF [63]

Answer:

the density of gasoline is about 0.7 kg per latest a URL 50 litre of gasoline to your car and when feeling it what is the mass of the same amount of gasoline 2144 to 86 kg answer

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This is a green pigment in chloroplasts that traps light energy from the sun.
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green pigment in the chloroplast is chlorophyll
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