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Dmitriy789 [7]
3 years ago
10

20- A gram of distilled water at 4° C:

Physics
1 answer:
Usimov [2.4K]3 years ago
6 0

Answer:

D. will decrease slightly in volume when heated to 6° C

Explanation:

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Baking cake is what a physical or chemical change
xenn [34]

Answer:

It's a chemical change.

Explanation:

The ingredients will react together once mixed and heated. Also the ingredients can not be pulled apart.

8 0
3 years ago
A wave travels a distance of 60cm in 3s. The distance blw successive crests of thd wave is 4cm. What is the frequency?
schepotkina [342]
Data:
ΔS = 60cm
Δt = 3s
Vm = ?

Vm = ΔS/Δt 
Vm =  \frac{60}{3}
Vm = 20cm/s

We have:

Vm = v
ΔS = λ
Δt = T

v =  \frac{\lambda}{T}
20 = \frac{\lambda}{4}
\lambda = 20*4
\lambda = 80cm

Soon:

v = \lambda*f
20 = 80*f
80f = 20
f =  \frac{20}{80} simplify( \frac{\div20}{\div20} )= \frac{1}{4}
\boxed{f = 0,25Hz}


6 0
3 years ago
What are the 4 main components of air in their molecular form?
masya89 [10]
4 main components are: Nitrogen, Oxygen, Argon and water vapour
3 0
3 years ago
Read 2 more answers
Arrange the core steps of the scientific method in sequential order.
andriy [413]
<span>the picture bellow gives you all the answers, this picture was given to my class by my science teacher a few years ago so it is accurate

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4 0
3 years ago
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The impulse given to a ball with mass of 4 kg is 28 N s. If the ball were already moving at 3 m/s what would the final velocity
mart [117]

vf = 10 m/s. A ball with mass of 4kg and a impulse given of 28N.s with a  intial velocity of 3m/s would have a final velocity of 10 m/s.

The key to solve this problem is using the equation I = F.Δt = m.Δv, Δv = vf - vi.

The impulse given to the ball with mass 4Kg is 28 N.s. If the ball were already moving at 3 m/s, to calculate its final velocity:

I = m(vf - vi) -------> I = m.vf - m.vi ------> vf = (I + m.vi)/m ------> vf = I/m + vi

Where I 28 N.s, m = 4 Kg, and vi = 3 m/s

vf = (28N.s/4kg) + 3m/s = 7m/s + 3m/s

vf = 10 m/s.

.

6 0
3 years ago
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