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Q.2. A certain light source is found to emit radiation whose peak value has a frequency of 8.28 Ã- 1014 Hz. Find the temperature of the source. Answer in units of K.
A rock band playing an outdoor concert produces sound at 120dB 5.0m away from their single working loudspeaker. What is the intensity (I) 5 m from the loudspeaker
The rotor in a certain electric motor is a flat, rectangular coil with 82 turns of wire and dimensions 2.25 cm by 3.88 cm. The rotor rotates in a uniform magnetic field of 0.800 T. Find the maximum torque acting on the rotor
What is the energy released in this nuclear reaction 47Be + 01n ? 37Li + 11H
Find out the magnitude of the electric field at a point P on the y-axis 0.529 m from the origin. The value of the Coulomb constant is 8.99 × 109 N • m2/C2.
Two boats start together and race across a 56-km-wide lake and back. Boat A goes across at 52 km/h and returns at 56 km/h. Boat B goes across at 36 km/h, and its crew, realizing how far behind it is getting, returns at 79 km/h. Turnaround times are n..
The average density of the planet Neptune is 1644 kg/m3. The acceleration of gravity on its surface is 11.32 m/s2. Calculate the average radius of Neptune
For a Nd:YAG laser there are four pump levels located at 1.00 eV, 1.24 eV, 2.40 eV, and 2.54 eV. What is shortest possible pump wavelength (in nanometers) that could be used to populate any of the excited energy levels
The mass of Mercury is 0.0550 times that of earth, and its radius is 0.380 times that of earth, Calculate the average density of Mercury (in kg/m3) given the earth's density is 5.52×103 kg/m3
A 2 kg ball moving towards the West with a speed of 10m/s collides with a 4 kg ball moving towards the North with a speed of 3m/s. Find the velocity of the combination after collision
A sudden gust of wind gives the boat an acceleration a, What is the boat's speed 6.4s later when the gust subsides
A 0.60 nF parallel-plate capacitor has plate area A = 1.4×10?4 m. what is the plate separation
A snowmobile climbs a hill at 15 mi/hr. The hill has a grade of 1 ft rise for every 40 ft. How fast will the snowmobile move downhill
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