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vlada-n [284]
2 years ago
7

The balance Lenght of a potent ometer wire for a Cell of emf 1.62v is 90cm. if the Cell is replaced by another one of emf 1.08v.

Calculate its new balance ​
Physics
1 answer:
andrew-mc [135]2 years ago
6 0

Answer:

answer is 3.05v

Explanation:

hope it is helpful and briliant

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With a wooden ruler, you measure the length of a rectangular piece of sheet metal to be 14 mm. With micrometer calipers, you mea
ipn [44]

Answer:

Follows are the solution to the given question:

Explanation:

The rectangular part has a length of 14 \ mm and its rectangular part has a width of 4.98 \ mm.

In option A

Calculating the area of the rectangular throgh the given piece:

\to A_R = WL=(14 mm) (4.98 mm) =69.72 \ mm^2

In option B

Calculating the ratio of rectangle's width which is rectangle's length:

\to R_{WL}=\frac{W}{L}= \frac{4.98 \ mm}{14 \ mm} = 0.3557

So, the ratio of rectangle's width to rectangle's length is 0.3557  .

In option C

Calculating the Perimeter of the rectangle:

\to  P_R=2(W+L)=2(14 \ mm+ 4.98 \ mm)= 2(18.98) = 37.96 \ mm  

In option D

Calculating the difference between length and width:  

\to D_{LW} = L- W = 14\  mm -4.98 \ mm =9.02 \ mm

In option E

Calculating the ratio of length to width:

\to R_{LW}=\frac{L}{W} =\frac{14\ mm}{4.98 \ mm} = 2.811

4 0
3 years ago
What units should be used when measuring the mass of a ladybug?
Aleks [24]
You could use grams hope this helps
3 0
3 years ago
A solid cylinder of mass 20kg rolls without slipping down a 30° slope. Find the acceleration and the frictional force needed to
Alex_Xolod [135]

Answer:

a = 3.27 m/s²

F = 32.7 N

Explanation:

Draw a free body diagram.  There are three forces:

Weight force mg pulling straight down.

Normal force N pushing perpendicular to the slope.

Friction force F pushing parallel up the slope.

Sum of forces in the parallel direction:

∑F = ma

mg sin θ − F = ma

Sum of torques about the cylinder's axis:

∑τ = Iα

Fr = ½ mr²α

F = ½ mrα

Since the cylinder rolls without slipping, a = αr.  Substituting:

F = ½ ma

Two equations, two unknowns (a and F).  Substituting the second equation into the first:

mg sin θ − ½ ma = ma

Multiply both sides by 2/m:

2g sin θ − a = 2a

Solve for a:

2g sin θ = 3a

a = ⅔ g sin θ

a = ⅔ (9.8 m/s²) (sin 30°)

a = 3.27 m/s²

Solving for F:

F = ½ ma

F = ½ (20 kg) (3.27 m/s²)

F = 32.7 N

6 0
3 years ago
What is the definition for relative motion
xeze [42]
Relative motion is the calculation of the motion of an object with regard to some other moving object.
7 0
3 years ago
Why was Thompson's Plum pudding model a significant departure from previous models?
PSYCHO15rus [73]

Answer:

Thomson's cathode-ray tube experiments led him to develop the plum-pudding model, which stated that each atom had positively charged particles spread throughout its negatively charged matter. Reword the statement so it is true. ... More alpha particles were deflected than he expected.

Explanation:

Well.. I hope it helps you..

Just correct me if I'm wrong..

5 0
3 years ago
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