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alisha [4.7K]
3 years ago
9

If an object starting from rest and position d o = 0 attains a velocity of 20 m/s at d = 50 m, calculate the acceleration requir

ed.

Physics
1 answer:
kolbaska11 [484]3 years ago
6 0
The answer is attached.

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The aluminum rod AB (G = 26 GPa) is bonded to the brass rod BD (G = 39 GPa). Knowing that portion CD of the brass rod is hollow
xz_007 [3.2K]

Answer:

Explanation:its hard

And ok

8 0
3 years ago
Now the proton at B is removed and replaced by a lithium nucleus, containing three protons and four neutrons. The proton at loca
Digiron [165]

Answer:

         F = 3 fo

Explanation:

The electric force is given by Coulomb's law

         F = k q₁ q₂ / r²

where k is the Coulomb constant and is equal to 8.99 109  

with the initial charge the force is  

        Fo = k q₁ q₂ / r²  

        Fo =k q₁ q₂ / r²

In this case it is indicated that charge 1 is changed by the lithium atom a = 3 P  

we substitute  

        F = k 3p p / r²      

        F = 3 (k p² / r²)  

        F = 3 fo

 

we see that the charge increases by three orders of magnitude

8 0
3 years ago
What's the definition of:<br> • cellular respiration<br><br> • photosynthesis
QveST [7]
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. ... Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity.
4 0
3 years ago
9. Which of the following methods can be used to cut down on brush sparking in a DC generator?
rusak2 [61]

Answer:

<em>Installing interpoles in armature core helps to cut down the spark in DC generators. </em>

Explanation:

A dc generator has a split ring type commutator to convert ac current generated to dc. The commutator comes in contact with the brushes throughout the working of the generator. Sparks occur in this region of contact.

When current flows through the armature coil it produces armature flux which opposes the main flux. This is called armature reaction and is the reason for sparks.

Interpol's are small auxiliary poles placed between the main poles of the generator. They are wound by wires of a number of turns connected in series with the armature. Interpol's produce a field that cancels the magnetising field of the armature and thus cancels armature reaction.

5 0
3 years ago
A 1,600 kg car is traveling with a speed of 20 m/s. Find the net force that is required to bring the car to a halt in a distance
Pie
256N. I love physics so.... yerp
4 0
3 years ago
Read 2 more answers
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