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Mekhanik [1.2K]
3 years ago
7

a force 10N drags a mass 10 kg on a horizontal table with acceleration 0.2m\s. If the acceleration due to gravity is 10m\s2, a c

oefficient of friction between the moving mass and a table is?​
Physics
1 answer:
kakasveta [241]3 years ago
7 0

Answer:

Explanation: 0.02

Recall: μ mg = ma

μ = ?

m = 10N

g = 10m\s2

a = 0.2m\s

Substituting the values , we have

μ x 10 x 10 = 10 x 0.2

100  μ = 2

μ = 2/100

μ = 1/50

μ = 0.02

μ = 0.02

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nasty-shy [4]

Total distance between Sally's house and mall = 10 kilometers

Distance covered during half way drive = \frac{10}{2} Kilometers

Now, she goes back to her home.

Distance covered going back home = \frac{10}{2} Kilometers

Now, she drives from home to mall.

Distance covered from Sally's home to mall = 10 kilometers

Hence, the total distance Sally traveled = 5 + 5 + 10

Total distance Sally traveled = 20 kilometers

Hence, the answer is 20 kilometers

5 0
3 years ago
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Determine if the data are qualitative, quantitative, or neither. Zinc is a silver-gray metal. Chlorine has a density of 3.2 g/L.
AysviL [449]

Qualitative data gives the information of quality which can not be measured in numbers. For example: Color of eyes, softness of skin.

Quantitative data is information of quantity that can be represented in numbers. For example length and mass of any object.

Zinc is a silver-gray metal is a qualitative data, here silver gray color is quality of zinc metal which can not be measured in numbers.

Chlorine has a density of 3.2 g/L is a quantitative data. The value of density can be compared with other elements by comparing the numbers.

Gallium is not found in nature is neither qualitative nor quantitative.

Nitrogen has a melting point of –210.00 °C is a quantitative data because this is expressed in numbers.

Aluminum is a solid is a qualitative data because it tells about the state of element which can not be measured in numbers.


5 0
3 years ago
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A rod 14.0 cm long is uniformly charged and has a total charge of -22.0 μC. Determine the magnitude and direction of the net ele
lesya692 [45]

Explanation:

It is given that,

Length of the rod, l = 14 cm = 0.14 m

Charge on the rod, q=-22\ \mu C=-22\times 10^{-6}\ C

We need to find the magnitude and direction of the net electric field produced by the charged rod at a point 36.0 cm to the right of its center along the axis of the rod, z = 36 cm = 0.36 m

Electric field at the axis of the rod is given by :

E=\dfrac{\lambda}{2\pi \epsilon_o z}

Where

\lambda is the linear charge density of the rod,

\lambda=\dfrac{q}{l}=\dfrac{-22\times 10^{-6}\ C}{0.14\ m}=-0.00015\ C/m

E=\dfrac{-0.00015}{2\pi\times 8.85\times 10^{-12}\times 0.36}

E = -7493170.57 N/C

or

E=-7.49\times 10^6\ N/C

Negative sign shows that the electric field is acting in inwards direction. Hence, this is the required solution.

4 0
3 years ago
Carbon has six protons and six neutrons. Which of the following represents the arrangement of electrons in a carbon
Alexeev081 [22]

Answer:

Carbon has 6 electrons.

Before I answer, here's what you need to know.

There are 7 shells. Each shell can hold a certain amount of electrons.

1: 2

2: 8

3: 18

4: 32

5: 32

6: 18

7: 8

Carbon has 6 electrons, remember? So shell 1 is already completely filled. Shell 1 completely full, so onto shell 2.

Shell 2 needs 8 electrons, but carbon only has 4 to give, so 2, 4.

I hope this helps!

4 0
3 years ago
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HELP!!
dangina [55]

Answer:

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