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emmasim [6.3K]
2 years ago
7

What's New

Physics
1 answer:
soldi70 [24.7K]2 years ago
5 0

Answer:

wow! I tried it!

good ..................

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This table shows experiments done by five scientists. Scientist Experiment Kyle cut a bar of gold in half Katie burned paper int
Sladkaya [172]

Answer:

give graph

Explanation:

we need it to answer

4 0
3 years ago
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What is the definition of Newton and could you leave an example of it too?
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What is the definition of newton
7 0
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Four hundred seventy joules of heat are removed from a heat reservoir at a temperature of 470 K. What is the entropy change of t
11111nata11111 [884]

Answer:

ΔS= -1 J/K

Explanation:

Given data

Heat Q= -470J

Temperature T=470 K

To find

Entropy change ΔS

Solution

We know that the entropy change of system is ΔS is given by

ΔS=Q/T

We have take heat value Q as negative because the heat is removed from heat reservoir

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ΔS=(-470J/470K)

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3 years ago
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A 0.20 kg mass (m1) hangs vertically from a spring and an elongation of the spring of 9.50 cm (r1) is recorded. With a mass (m2)
kupik [55]

Answer:

k=320N/m

Explanation:

Step one:

given data

Let the initial/equilibrum position be x

mass m1= 0.2kg

F1= 0.2*10= 2N

elongation e= 9.5cm= 0.095m

mass m2=1kg

F2=1*10= 10N

elongation e= 12cm= 0.12m

Step two:

From Hooke's law, which states that provided the elastic limits of a material is not exceeded the extention e is proportional to applied Force F

F=ke

2=k(0.095-a)

2=0.095k-ka----------1

10=k(0.12-a)

10=0.12k-ka----------2

solving equation 1 and 2 simultaneously

 

   10=0.12k-ka----------2

-   2=0.095k-ka----------1

   8=0.025k-0

divide both side by 0.025

k=8/0.025

k=320N/m

5 0
3 years ago
Which would fall with greater acceleration in a vacuum a leaf or a stone?
Sergeu [11.5K]
Because its a vacuum, there's no air resistance, they will fall at same time
Applying gravity acceleration rule g=9.8m/s which is taken as 10m/s sometimes.
3 0
3 years ago
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