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4 years ago

I will give away all my points for whoever get's this right

Physics

2 answers:

kompoz [17]4 years ago

7 0

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

It's pencil lead because the it's taken from a mine and then it goes inside a wooden pencil and everybody uses them if you're not using a pen.

romanna [79]4 years ago

5 0

Answer:

Pencil lead.

Explanation:

no need for an explemation you can put two and two together XD

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What evidence would you observe if the law of conservation of mass is obeyed when mixing two solutions?

Marianna [84]

Answer:

You should have noticed that the number of atoms in the reactants is the same as the number of atoms in the product. The number of atoms is conserved during the reaction. However, you will also see that the number of molecules in the reactants and products are not the same.

3 0

3 years ago

Two protons in a molecule are 4.40 10-10 m apart. Find the electric force exerted by one proton on the other.

Akimi4 [234]

Answer:

F = 1.19 x 10⁹ N

Explanation:

The electrostatic force between the charged particles is given by Colomb's Law as follows:

$F = \frac{kq_{1}q_{2}}{r^{2}}$

where,

F = Electrostatic force = ?

k = Colomb's constant = 9 x 10⁹ N.m²/C²

q₁ = q₂ = charge on proton = 1.6 x 10⁻¹⁹ C

r = distance between protons = 4.4 x 10⁻¹⁰ m

Therefore,

$F = \frac{(9\ x\ 10^{9}\ Nm^{2}/C^{2})(1.6\ x\ 10^{-19}\ C)(1.6\ x\ 10^{-19}\ C)}{(4.4\ x\ 10^{-10})^{2}} \\\\$

8 0

3 years ago

DESPERATE WILL GIVE BRAINLIST AND THANKS

Bas_tet [7]

Answer:

true

Explanation:

8 0

3 years ago

Three resistors of 4.0, 6.0, and 10.0 Ω are connected in parallel. If the combination is connected in series with a 12.0-V batte

Grace [21]

Answer:

0.536 A

Explanation:

From the question,

The combined resistance of the parallel connection is given as

1/Rt = 1/4+1/6+1/10

Rt = 120/15

Rt = 8 ohms.

Since the the combination is connected in series with a 10 ohms resistor,

Rt' = 8+10 = 18 ohms.

Current flowing through the series circuit

I = V/Rt'

V = 12 V, Rt' = 18 ohms

I = 12/18

I = 0.67 A.

Therefore voltage across the combined resistor

V' = 8(0.67)

v' = 5.36 V.

Since the resistors a connected in parallel, the same voltage drop across them.

Therefore, current through the 10 ohms

Ix = 5.36/10

Ix = 0.536 A

5 0

3 years ago

Suppose that a stray neutron with an initial speed of 1.4 x 107 m/s is just barely captured by a nucleus with diameter d = 1.0 X

son4ous [18]

Answer:

$F=16.366N$

Explanation:

Given data

Initial velocity of neutron v₀=1.4×10⁷m/s

Diameter of nucleus d=1×10⁻¹⁴m

Mass of neutron m=1.67×10⁻²⁷kg

The acceleration of neutron is given from equation :

$v^{2}=v_{o}^{2}+2ad\\ where\\v=0\\So\\a=\frac{v^{2}-v_{o}^{2} }{2d}\\ a=\frac{-v_{o}^{2}}{2d}\\ a=\frac{-(1.4*10^{7}m/s )^{2}}{2(1.0*10^{-14} m)}\\a=-9.81*10^{27}m/s^{2}$

So its magnitude is a=9.81×10²⁷m/s²

To find magnitude of force we use Newtons second law of motion

$F=ma\\F=(1.67*10^{-27} kg)(9.81*10^{27}m/s^{2} )\\F=16.366N$

6 0

4 years ago