You are walking on a beach and find a mystery piece of metal. You take it back to your lab and measure its mass to be 0.5 kg. In
1 answer:
D) Silver
Explanation:
Given parameters:
Mass of metal = 0.5kg
temperature change = 1K
Quantity of heat = 115J
Unknown;
Identity of the metal = ?
Solution:
We first find the specific heat of the unknown metal and compare with the table of specific heat of metals.
C =
C = = 230JKg⁻¹K⁻¹
Comparing this value with the table shows that the metal is silver.
Learn more:
Specific heat brainly.com/question/7210400
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Complete question:
A taut rope has a mass of 0.123 kg and a length of 3.54 m. What average power must be supplied to the rope to generate sinusoidal waves that have amplitude 0.200 m and wavelength 0.600 m if the waves are to travel at 28.0 m/s ?
Answer:
The average power supplied to the rope to generate sinusoidal waves is 1676.159 watts.
Explanation:
Velocity = Frequency X wavelength
V = Fλ ⇒ F = V/λ
F = 28/0.6 = 46.67 Hz
Angular frequency (ω) = 2πF = 2π (46.67) = 93.34π rad/s
Average power supplied to the rope will be calculated as follows
where;
ω is the angular frequency
A is the amplitude
V is the velocity
μ is mass per unit length = 0.123/3.54 = 0.0348 kg/m
= 1676.159 watts
The average power supplied to the rope to generate sinusoidal waves is 1676.159 watts.