Answer:
16.77 m/s
Explanation:
Given that
Frequency of middle pitch, Fo = 261.6 Hz
Frequency of C sharp, f = 277.2 Hz
Velocity of sound in air, v = 298 m/s
Speed of sound from the source, Vs = ? m/s
Using the formula
f = Fo•(V + Vr)/(V + Vs)
← Doppler
Vr would be +ve if the receiver is moving toward source;
Vs would be -ve if source is moving toward the receiver
277.2 Hz = 261.6Hz * (298 + 0) / (298 - Vs)
277.2 = 77956.8 / (298 - Vs)
298 - Vs = 77956.8 / 277.2
298 - Vs = 281.23
Vs = 298 - 281.23
Vs = 16.77 m/s
Thus, the speed needed is 16.77 m/s
Answer:
Explanation:
The general equation for the disk with moment of inertia I when given small angular displacement 
is given by
Replacing
where 
is the angular frequency of oscillation
General solution for this Equation is given by
where 
Thus K can be written as
Answer:
- Grand Marais
- Two Harbors
- Duluth
Explanation:
The places that would would get snowfall because of the lake effect are Grand Marais, Two Harbors, and Duluth. The reason for this is that these three places are located right on the shores of the Lake Superior. This lake is one of the biggest lakes in the world. It has enormous amount of water in it, having big impact on the regional climate because of that. The water from this lake creates a lot of humidity in the air, and there's a lot of evaporation as well, both causing the formation of clouds, and when it is cold enough, instead of precipitation, the region gets large amounts of snowfall.
Answer:
Tangential velocity = 10.9 m/S
Explanation:
As per the data given in the question,
Force = 20 N
Time = 1.2 S
Length = 16.5 cm
Radius = 33.0 cm
Moment of inertia = 1200 kg.cm^2 = 1200 × 10^(-4) kg.m^2
= 1200 × 10^(-2) m^2
Revolution of the pedal ÷ revolution of wheel = 1
Torque on the pedal = Force × Length
= 20 × 16.5 10^(-2)
= 3.30 N m
So, Angular acceleration = Torque ÷ Moment of inertia
= 3.30 ÷ 12 × 10^(-2)
= 27.50 rad ÷ S^2
Since wheel started rotating from rest, so initial angular velocity = 0 rad/S
Now, Angular velocity = Initial angular velocity + Angular Acceleration × Time
= 0 + 27.50 × 1.2
= 33 rad/S
Hence, Tangential velocity = Angular velocity × Radius
= 33 × 33 × 10^(-2)
= 10.9 m/S
