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Slav-nsk [51]
4 years ago
12

The quantity of heat from a chemical reaction comes from

Physics
1 answer:
Tomtit [17]4 years ago
3 0
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius
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(physical science) could someone please help me out with this lab? if i’m being honest i did the lab but i lost all of my work :
djverab [1.8K]

Explanation:

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6 0
3 years ago
Two identical stones are thrown from the top of a tall building. Stone 1 is thrown vertically downward with an initial speed v,
Molodets [167]

If the resistance of the Air is ignored, we can use the theory given by Galileo in which he warned that the thermal velocity of a body in free fall was given by

v= \frac{1}{2}gt

Where

g = Gravitational acceleration

t = time

As we can see the speed of objects in free fall is indifferent to the position that is launched (as long as the resistance of the air is ignored) or its mass.

Both bodies will end with the same thermal speed.

5 0
3 years ago
A merry go round (mass of 200kg and radius 5m) is rotating so that the outside edge is moving 10m/s. A giant bug of 6kd at a dis
romanna [79]

Answer:

2 rad/s

Explanation:

For a rotating object, the linear velocity is given by

v=\omega r

where \omega is the angular velocity and r is the radius.

\omega=\dfrac{v}{r}

The edge has a linear velocity of 10 m/s and the radius at the edge is 5 m.

\omega=\dfrac{10 \text{ m/s}}{5 \text{ m}} = 2 \text{ rad/s}

8 0
4 years ago
Add these measurements, using significant figure rules 1.0090cm + 0.02cm
Harlamova29_29 [7]

Answer:

1.03

Explanation:

0.02 has two significant decimal figures, so start by shortening 1.0090 to 2 decimal places (3 significant figures). Round up the decimal to become 1.1 and add .02 to get 1.3.

5 0
3 years ago
A certain parallel-plate capacitor is filled with a dielectric for which κ = 5.0. The area of each plate is 0.027 m2, and the pl
alexdok [17]

Answer:

Energy will be 4.776\times 10^{-5}J  

Explanation:

We have given that dielectric constant k = 5

Area of the plate A=0.027m^2

Distance between the plates d=2mm=2\times 10^{-3}m

Electric field E = 200 kN/C

We know that capacitance is given by C=\frac{K\epsilon _0A}{d}=\frac{5\times 8.85\times 10^{-12}\times 0.027}{2\times 10^{-3}}=0.597\times 10^{-9}F

We know that electric field is given by E=\frac{V}{d}

So V=Ed=200\times 10^3\times 2\times 10^{-3}=400volt

So energy will be E=\frac{1}{2}CV^2=\frac{1}{2}\times 0.597\times 10^{-9}\times 400^2=4.776\times 10^{-5}J

6 0
3 years ago
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