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alexgriva [62]
2 years ago
11

A candle is placed between a concave mirror and its focal point.

Chemistry
2 answers:
natali 33 [55]2 years ago
6 0

Virtual and enlarged..............

What grade are you in btw ?

jarptica [38.1K]2 years ago
3 0

Answer: C AND D

Explanation:

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Taya2010 [7]

Answer: 0.79

Explanation:

6 0
3 years ago
A 20.0g sample of metal with a specific heat of 5 J/(g°C) raised it's initial temperature to 40.0 when 500J heat was added. What
slavikrds [6]

The initial temperature of the metal = 35 °C

<h3>Further explanation</h3>

Heat can be formulated :

Q = m . c . ΔT

Q = heat, J

c = specific heat, J/g C

ΔT = temperature, °C

m = 20 g

c = 5 J/(g°C)

Q = 500 J

T₁ = 40 C

the initial temperature :

\tt \Delta t(T_2-T_1)=\dfrac{Q}{m.c}\\\\40-T_1=\dfrac{500}{20.5}\\\\40-T_1=5\\\\T_1=35^oC

3 0
2 years ago
If the temperature of a gas confined to such a cylinder is raised from 287°C to 587°C, what is the ratio of the initial volume t
jenyasd209 [6]

Answer:

1 : 2

Explanation:

From the question given, we obtained the following information:

T1 = 287°C = 287 +273 = 560K

T1 = 587°C = 587 +273 =860K

V1 = V

V2 =?

V1 /T1 = V2 /T2

V/560 = V2/860

Cross multiply

V2 x 560 = 860 x V

Divide both side by 560

V2 = (860 x V) / 560

V2 = 1.54V = 2V

The ratio of initial to final volume =

V1 : V2

= V : 2V

= 1 : 2

8 0
3 years ago
What is the difference between a mechanical wave and an electric magnetic way
atroni [7]

Answer

Explanation: mechanical wave is an oscillation or matter and and electric wave is energy released by oscillating and accelerating chargers

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