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snow_lady [41]
3 years ago
15

According to the periodic table, which of the following is the correct symbol for

Physics
1 answer:
victus00 [196]3 years ago
5 0

Answer:

D.

Explanation:

P

The symbol for lead is Pb: it comes from the latin name for it, which is <em>plumbum</em><em>.</em>

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Plan an experiment to measure the ideal mechanical advantage of a three-hole punch. (a) What materials would you need? (b) What
Vaselesa [24]

Answer:

A) Three hole punch and either a layered plastic or paper

B) Identify the lengths involved  ,

  Length of input arm / length of output arm = L1/ L2

Explanation:

<u>a) Materials involved includes :</u>

Three hole punch and either a layered plastic or paper

Identify the forces acting on the three-hole punch which are Input and output forces

Identify the points where they act

<u>B) procedures involved </u>

The mechanical advantage = output force / input force

step one:  Identify the lengths involved

assuming no friction or relatively small friction \

mechanical advantage can be calculated as : Length of input arm / length of output arm = L1/ L2

7 0
3 years ago
Tristan is an engineer working on a design for a new roller coaster. He wants the car to shoot out of the station very fast but
uysha [10]

Answer:

Superconducting materials can transport electrons with no resistance, and hence release no heat, sound, or other energy forms. Superconductivity occurs at a specific material's critical temperature (Tc). As temperature decreases, a superconducting material's resistance gradually decreases until it reaches critical temperature. At this point resistance drops off, often to zero, as shown in the graph at right.

Explanation:

7 0
2 years ago
In subduction, _____.
user100 [1]

The answer is the less dense plate slides over the denser plate.

4 0
3 years ago
The weight (W) of an object is the product of its mass (m) in kilograms and g, the acceleration due to gravity in meters/second2
Nookie1986 [14]
The weights in newtowns for the given masses are

<span> masses        22.1,                 33.5,             41.3,           59.2,            78
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e.g,   for m=22.1kg, W=22.1kgx9.8N/kg =216.58N</span>
7 0
3 years ago
give an example of motion in which displacement of the particle is zero but acceleration is not zero in journey?
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Motion of a ball thrown by a person upwards and caught after some time is an example of motion in which displacement of the particle is zero but acceleration is not zero in journey.

The displacement of the ball is zero because the starting and end point of the motion are same, i.e, the person's hands.During its motion, the acceleration of ball is constant and non zero called as acceleration due to gravity, g= -9.8 m/s². The velocity of ball is continuously changing. It first decreases during the upward motion of the ball and then increases during the downward journey.The acceleration remains constant and non zero all the time.

4 0
3 years ago
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