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jekas [21]
3 years ago
6

Calculate the force necessary to accelerate a 10 kg table from O m/s to 4 m/s in 2 seconds.

Physics
1 answer:
yanalaym [24]3 years ago
6 0

Answer:

a= v/t

a = 4/2

a = 2 m/s^2

And F = M a

F = 10 × 2

F = 20 N

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umka21 [38]

Answer:

97% will sink below the water

Explanation:

Waters density is 1 g/cm3

If an object's density is greater than 1g/cm3, it will sink. If it's less then it would float. 1-0.97 = 0.03. Only 3% of the ice would show while 97 will be under.

7 0
3 years ago
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A test tube is in uniform circular motion in a centrifuge, which is a piece of scientific equipment used to separate solids from
Molodets [167]
Since direction is part of velocity, and the object is moving in a circle, its velocity is constantly changing.
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2 years ago
Between which types of elements do ionic bonds occur, and how do electrons act within the bond?(1 point)
nata0808 [166]

Answer:

Im pretty sure that its, the metals and nonmetals, electrons transferred.

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2 years ago
Velocity of sound increases on a cloudy day. Why?
Nat2105 [25]
The density of air reduces as humidity and amount of water in the air increases. <span> The speed of sound is inversely proportional to the root of density, therefore sound travels faster on a cloudy day than on a dry day so, velocity of sound increase.</span>
8 0
3 years ago
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A thin flake of mica (n ! 1.58) is used to cover one slit of a double-slit interference arrangement. The central point on the vi
Darina [25.2K]

Answer: 6.64 × 10^ -6 m

Explanation:

for a constructive interference;

ρ= 2πm

remember that we are looking for the seventh bright side fringe.

so, m=7

ρ=14π

We now have to find the phase different

ρ`=2πx/ρ - 2πx/ρ

p` is the wavelenght in the mica. x= width of the mica wavelength in the mica.

ρ= ρ/n.

n= refractive index.

The phase will now be

ρ`= 2πx/ρ - 2πx = 2πx(n-1)/ρ.

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x = 7(550× 20^ 9)/ 1.58 - 1

= 6.64 × 10^-6

4 0
3 years ago
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