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nasty-shy [4]
3 years ago
13

During a chemical reaction atoms can be rearranged or destroyed but not created True False

Physics
1 answer:
Alex Ar [27]3 years ago
8 0

False. This is because atoms can be rearranged, but they can not be destroyed or created. This explains the law of conservation of mass.

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Does displacement = Δx?
Volgvan
Typically no. Displacement can be in multiple directions as a vector. of something is traveling only along x, then it would be true though this is usually not the case.
8 0
3 years ago
Read 2 more answers
A 270 g bird flying along at 5.0 m/s sees a 11 g insect heading straight toward it with a speed of 35 m/s (as measured by an obs
mote1985 [20]

Answer:

The bird's speed immediately after swallowing is 6.17 m/s.

Explanation:

Given that,

Mass of the bird, m = 270 g = 0.27 kg

Initial speed of the bird, u = 5 m/s

Mass of the insect, m' = 11 g = 0.011 kg

Initial speed of the insect, u' = 35 m/s

We need to find the bird's speed immediately after swallowing. Let it is given by V. Using the conservation of momentum as :

mu+m'u'=(m+m')V\\\\V=\dfrac{mu+m'u'}{(m+m')}\\\\V=\dfrac{0.27\times 5+0.011\times 35}{(0.27+0.011)}\\\\V=6.17\ m/s

So, the bird's speed immediately after swallowing is 6.17 m/s.

4 0
3 years ago
What regulates the movement of molecules into and out of the cytoplasm
MAXImum [283]

Answer:

The plasma membrane is made up of a phospholipid bilayer that regulates the concentration of substances that can permeate a cell

Explanation:

7 0
3 years ago
Janet pushes a cart, the cart with a net force of 60N. The mass of the cart was 48 kg. Calculate the carts acceleration
jeka57 [31]

Answer:

a = 1.25m/s^2

Explanation:

Force = mass x acceleration

Given mass M = 48kg and

Force F = 60N

60 = 48 x a

Divide both sides by 48

60/48 = 48 x a/48

1.25 = a

a = 1.25m/s^2

5 0
4 years ago
Kelly walks 5 km to school. It takes her 1.5 hours. Calculate her speed in m/s
ratelena [41]
Kelly walks 5km.
1 km = 1000m.
5x1000 = 5000meters
1.5h = 90minutes
90miX60 = 5400s

10m/54s
And so on

7 0
2 years ago
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