Priscilla is driving her car on a busy street and Harvey passes her on his motorcycle. What will happen to the sound from his mo
2 answers:
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Answer:
I = 215.76 A
Explanation:
The direction of magnetic field produced by conductor 1 on the location of conductor 2 is towards left. Based on Right Hand Rule -1 and taking figure 21.3 as reference, the direction of force Fm due to magnetic field produced at C_2 is shown above. The force Fm balances the weight of conductor 2.
Fm = u_o*I^2*L/2*π*d
where I is the current in each rod, d = 0.0082 m is the distance 27rId
between each, L = 0.85 m is the length of each rod.
Fm = 4π*10^-7*I^2*1.1/2*π*0.0083
The mass of each rod is m = 0.0276 kg
F_m = mg
4π*10^-7*I^2*1.1/2*π*0.0083=0.0276*9.8
I = 215.76 A
note:
mathematical calculation maybe wrong or having little bit error but the method is perfectly fine
Answer:
Explanation:
given data:
flow Q = 9 m^{3}/s
velocity = 8 m/s
density of air = 1.18 kg/m^{3}
minimum power required to supplied to the fan is equal to the POWER POTENTIAL of the kinetic energy and it is given as
here is mass flow rate and given as
Putting all value to get minimum power
Answer:
Explanation:
Given
Ray of light incident on plane making an angle of with normal
Thus incident angle
So according to the law of incidence is equal to angle of reflection
thus
and angle between mirror and reflected ray
Answer:
a.) At their highest point, both of them have the same amount of mechanical energy.
Explanation:
Grasshopper A jumps upwards with speed v while grasshopper B jumps at an angle of 66 degree with horizontal at same speed
so vertical speed of B is given
So when both the grasshopper will jump upwards they both will attain different maximum heights
Since initial speed of both grasshopper is same so their mechanical energy is always conserved
So mechanical energy of grasshopper A is given as
Mechanical energy of grasshopper B is given as
So we have
a.) At their highest point, both of them have the same amount of mechanical energy.