Calculating the energy radiated per minute in a tungsten filament.

Calculate the energy radiated per minute from the filament of an incandescent lamp at 2000 K, if the surface area is 5 x 10^-5 m^2 and its relative emittance is 0.85.

Finding the force experienced by each of two long straight parallel conductors

Find the force experienced by each of two long straight parallel conductors of length, L, separated by a distance, d, and carrying currents i1 and i2.

Multiple choice question about calculating the average emf induced.

The mutual inductance of two coils is 0.750 H. Calculate the average emf induced in secondary if the current in the primary reaches 6.00 A in 0.030 sec. A) 150 V B) 0.00375 V C) 0.135 V D) -150 V

Types of forces interactions: strong, electromagnetic, gravitational, and weak.

See attachment for problem statement. Forces interaction: strong, electromagnetic, gravitational, and weak.

Multiple choice questions in regards to heat, power, voltage, resistance, and time.

PART ONE: The heating element of an electric hot plate, 26.5 ohms resistance, is connected across a 115 V circuit. How much heat will be developed in 10.0 seconds? A) between 1000 J an 2000 J B) less than 1000 J C) between 2000 J and 4000 J D) Over 4000 J PART TWO: The power dissipated by the heating element above is: A) less than 1000 W B) between 1000 W and 2000 W C) between 2000 W and 4000 W D) over 4000 W