Answer:
Part a)
Part b)
Part c)
F = 2.7 N
Explanation:
Part a)
As we know that the rotational kinetic energy of the merry go round is given as
here we know that
Now we have
Part b)
Now we know that work done due to torque = change in kinetic energy
Part c)
In order to stop it in four revolutions we have
F = 2.7 N
Answer:
272.05 K; 489.69 °R; -1.11 °C
Explanation:
Fahrenheit can be converted to degrees Celsius using the following formula:
°C = 5/9 x (°F - 32) = -1.11 °C
The temperature in Kelvin is calculated from the temperature in degrees Celsius as follows:
K = °C + 273.15 = 272.05 K
The temperature on the Rankine scale is calculated from Kelvin as follows:
°R = 1.8K = 1.8(272.05) = 489.69 °R
Answer:
Wavelength = 10 m
Explanation:
Given:
Speed = 100 m
Frequency = 10 Hz = 10
To find : Wavelength = ?
We know that the relationship between wavelength λ, frequency f and speed v is given by the equation
v = fλ
Therefore wavelength λ = v/f
= 100 m / 10 m
= 10 m
Hence wavelength = 10 m