Answer:
Part a)
Part b)
Explanation:
Part a) What is the period of these waves?
we know that
Since wave frequency (f) is the number of waves per second, and the period (T) is essentially the number of seconds per wave, the relationship between frequency and period is
we have
Remember that
1 Hz is one cycle (or one wave) per second
so
Part b) What is the wave velocity?
we know that
The speed of a wave (v) is equal to the frequency multiplied by the wavelength
we have
so
Answer:
Q = 8368 Joules.
Explanation:
Given the following data;
Mass = 50 g
Initial temperature = 30°C
Final temperature = 70°C
Specific heat capacity = 4.184 J/g °C
To find the amount of heat absorbed by the water;
Heat capacity is given by the formula;
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
dt = T2 - T1
dt = 70 - 30
dt = 40°C
Substituting the values into the equation, we have;
Q = 8368 Joules.
Aaaaaaaaaaaaaaaaaaaaaaaaa