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kati45 [8]
3 years ago
15

Explain the topic of velocity

Physics
2 answers:
jeka57 [31]3 years ago
7 0

Answer:

the speed of something in a given direction.

Explanation:

so basically. like when you're driving a car or riding in one the speed of which you are traveling is a type of velocity

Sholpan [36]3 years ago
3 0
Formula is inital position (0m) - final position (lets say 235m) divided by time(lets say 25 sec) (235-0)/25=9.4 so the velocity of the object was 9.4
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How does bilateral symmerty extend to our senses?​
andreev551 [17]

Answer:

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8 0
3 years ago
I need help ASAPP
Tresset [83]

Answer: For the first part the answer is Radio Waves and the second part’s answer is gamma ray.

6 0
3 years ago
On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of
Advocard [28]

Answer:

On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of electrons? (<em>the mass will decrease by a very small factor</em>)

(b) What happens to the mass of an initially neutral object when it gains a net negative charge through the exchange of electrons?  (<em>The mass will increase by a very small factor</em>)

Explanation:

(a) On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of electrons? (<em>the mass will decrease by a very small factor</em>)

The mass of an atom is given by the sum of the masses of the protons, neutrons and electrons. Electrons has lower mass than protons and neutrons, so they have a minor contribution to the total mass of the atom.    

When an object is electrically neutral it means that it has the same number of protons and electrons. For the case of an object positively charged, the rate of protons is greater than the number of electrons. That means that atom lose electrons so the mass will decrease in a very small factor.

(b) What happens to the mass of an initially neutral object when it gains a net negative charge through the exchange of electrons?  (<em>The mass will increase by a very small factor</em>)

For the case when the object is negatively charged, it means that the atom gains electrons from another object, leading to the conclusion that the mass of the atom will increase in a very small factor.  

Key values:

Electron mass: 9.1095×10⁻³¹ Kg

Proton mass: 1.67261×10⁻²⁷ Kg

Neutron mass: 1.67492×10⁻²⁷ Kg

5 0
3 years ago
Find the resultant vector (mag. and dir.) given the following information: Ax = 5.7, Ay = 3.4
Mashcka [7]

<u>Answer:</u>

  Magnitude = 6.64

  Direction = 30.82^0 from horizontal.

<u>Explanation:</u>

 We have horizontal component of vector Ax = 5.7 and vertical component of vector Ay = 3.4.

 Magnitude of vector acting perpendicularly = \sqrt{A_x^2+A_y^2}

 Substituting

    A=\sqrt{A_x^2+A_y^2} =\sqrt{5.7^2+3.4^2} =6.64

Direction θ = tan^{-1}(\frac{A_y}{A_x} )

  Substituting

      θ =tan^{-1}(\frac{A_y}{A_x} )= tan^{-1}(\frac{3.4}{5.7})=30.82^0

7 0
3 years ago
A thin slab of Germanium is used as a Hall Effect probe. How would you orient a magnetic field to make the side facing out of th
Cerrena [4.2K]

Answer:

the magnetic field must go in a direction parallel to the page perpendicular to the current.

Explanation:

The Hall effect is the voltage produced by the movement of electrons due to the effect of electric and magnetic fields in a material

            F = eE + v x B

The electric field goes in the direction of the current that is opposite to the direction of the electrons, therefore the magnetic force must be perpendicular to it.

Therefore, if the current goes in a direction parallel to the page, in the x direction, the magnetic field must be perpendicular to it if we use the rule of the right wizard,

thumb points in the direction of E, x axis parallel page

The fingers extended should go parallel to the page in the direction and up

The palm is the direction of the Force, where the voltage will be produced points out the page, this is for positive charges, as in germanium the charges are negative, the real force goes into the page.

Therefore the electrons accumulate on the inside of the page and the voltage is negative in this part.

Therefore the voltage is positive on the outside of the sheet. In conclusion the magnetic field must go in a direction parallel to the page perpendicular to the current.

6 0
3 years ago
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