Answer:
39.6138 °C
Explanation:
Heat gain by water = Heat lost by nickel
Thus,
Where, negative sign signifies heat loss
Or,
For water:
Volume = 100.0 mL
Density of water= 1 g/mL
So, mass of the water:
Mass of water = 100 g
Initial temperature = 22.0 °C
Specific heat of water = 4.186 J/g°C
For nickel:
Mass = 275 g
Initial temperature = 100 °C
Specific heat of nickel = 0.444 J/gK = 0.444 J/g°C
So,
Thus,
The final temperature of the combined metals is 39.6138 °C
Answer:
Argon
Explanation:
Argon, an inert gas, is the third most abundant gas in the atmosphere.
Answer:
Because Bricks don't reflect. but mirrors reflect due to their lustre nature.
Explanation:
Answer: 2.22s
Explanation: wave speed = 450 m/s, A = amplitude = 1.6mm, λ= wavelength = 0.19m
Wave speed = distance traveled / time taken
Distance traveled = 1km = 1000 m
450 = 1000/ t
t = 1000/ 450 = 2.22s
Answer:
The answers to your questions are given below
Explanation:
22. The energy of an electromagnetic wave and it's frequency are related by the following equation:
E = hf
Where:
E => is the energy
h => is the Planck's constant
f => is the frequency
From the equation i.e E = hf, we can conclude that the energy of a wave is directly proportional to it's frequency. This implies that an increase in the frequency of the wave will lead to an increase in the energy of the wave and also, a decrease in the frequency will lead to a decrease in the energy of the wave.
23. Gamma ray and radio wave are both electromagnetic waves. All electromagnetic waves has a constant speed of 3×10⁸ m/s in space.
Thus, gamma ray and radio wave have the same speed in space.
