g Consider a brushed DC motor. Suppose that motor’s back emf constant is ! = 0.15 Volt per radian/sec. • Deliverable (a): What is the torque constant of this motor, ", in Newton-meters per Ampere? Please explain your answer. (1 point) Suppose that the above motor has an armature resistance of = 0.2 Ohms. Moreover, consider the specific operating condition where the motor is spinning at a steady-state angular velocity of = 200 radians per second, so that inductive effects can be neglected. Finally, suppose that the supply voltage for this specific steady-state condition is = 35Volts. Under these conditions/assumptions: • Deliverable (b): Write down an equation relating the motor’s supply voltage, , armature current, , and angular velocity, (1 point). • Deliverable (c): Use the above equati

if they have a finite resultant

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.