Answer:
The length of the wire is 83.2 m.
Explanation:
Given that,
Power of heater, P = 300 W
Voltage, V = 110 V
The resistivity of nichrome wire is,
The electric power of a wire is given by :
Area of cross section of the wire is :
Resistance of a material is given by :
So, the length of the wire is 83.2 m. Hence, this is the required solution.
The velocity of sound in at 300C is 511.3 m/s.
Explanation:
The equation that gives the speed of sound in ar as a function of the air temperature is the following:
where
T is the temperature of the air, measured in Celsius degrees
In this problem, we want to find the speed of sound in ar for a temperature of
Substituting into the equation, we find:
So, the velocity of sound in at 300C is 511.3 m/s.
Learn more about sound waves:
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Answer:
1/2 Hz
Explanation:
A simple harmonic motion has an equation in the form of
where A is the amplitude, is the angular frequency and is the initial phase.
Since our body has an equation of x = 5cos(π t + π/3) we can equate and solve for frequency f
f = 1/2 Hz
High frequency = D, short wavelength
Answer:
& -y direction
& +y direction
Explanation:
From the question we are told that:
Speed of electron +x direction
Earths magnetic field +z direction
a)
Generally the equation for magnetic force is mathematically given by
where
Magnitude & Direction
-y direction
b)
Generally the equation for magnitude and direction of the magnetic force on an electron. is mathematically given by
Magnitude & Direction
& +y direction