Answer:1. Find the wavelength in air at 20°C of an ... 19 m. 2. What is the wavelength of an 18-Hz sound wave in seawater at 25°C? ... 3. Find the frequency of a sound wave moving through iron at 25°C with a ... The lowest frequency is. 25. Resonance on Strings A violin sounds a note of F sharp ..
Answer:
<h3>The answer is 1.92 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula

From the question we have

We have the final answer as
<h3>1.92 g/cm³</h3>
Hope this helps you
C. because the car traveled twice as long at the same rate as the truck
Answer:
Each type of substance or material has a different capacity to support an energy supply without raising its temperature much. Water is the substance that, when receiving energy, raises its temperature less and also when losing energy, it lowers its temperature less.
Rocks, metals, and solids in general, tend to increase the temperature greatly when receiving energy. For this reason on a hot day, the sand on the beach or the concrete sidewalk will tend to be much hotter than the water in the pool or the sea that will be warm.
Answer:
5.22e-3 kg·m²/s
Explanation:
Given
r = 3.46mm = 0.00346m
T = 2.90 N
time = 0.260s
By applying the torque
τ = F • r = 2 ×2.9N ×0.00346m
= 0.020 N·m
But τ = dL/dt,
dL is the change in angular momentum since Li = 0, Lf = dL.
hence,
dL = τ dt = 0.020N·m ×0.260s
= 0.0052kg·m²/s
= 5.22e-3 kg·m²/s