Assuming the Stefan-Boltzmann law, compare the rate of radiation from a metal ball at 727 °C with its rate of radiation at 527 °C. Also compare its rate of loss of heat at the two temperatures, if the temperature of the surroundings is 27 °C.

Q: Two 3.70 kg balls are attached to the ends of a thin rod of length 73.0 cm and negligible mass. The…

A: Law of conservation of angular momentum :According to the law of conservation of angular momentum,…

Q: A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck…

A:

Q: 1) When pions are brought to rest their lifetime is 1.77 10-8 s. A beam of pions is produced in an…

A: Intensity is measured on a plane perpendicular to the direction of propagation of the energy, where…

Q: As shown in the right figure, a collimated light beam with intensity of I, = 100(W/m²) passes…

A: We know that here in the figure we have given that A collimated light beam intensity of I0 and it…

Q: The intensity of the sound wave from a jet airplane as it is taking off is 100 W/m at a distance of…

A:

Q: Ignoring air resistance, from how high above thr ground would a 0.3 kg ball need to be dropped to…

A:

Q: A 0.4 C charge and a 0.3 charge exert a force of 55 N on each other. How far apart are the charges?

A: (1) Given: Charges q1=0.4 C, q2=0.3 C, Force between the charges F=55 N. Required: Distance between…

Q: 8) A rigid rectangular loop, which measures 0.30 m by 0.40 m, carries a current of 5.5 A, as shown…

A: Area of the loop A=0.3×0.4=0.12 m2 Current in the loop i=5.5 A Uniform external magnetic field B=2.9…

Q: Consider a vacuum-filled wave guide whose cross-sectional shape is a 45° right triangle as shown…

A:

Q: What is the maximum kinetic energy of photoelectrons ejected from sodium by the incident radiation…

A: Given that-Wavelength of incident radiation is 120 nmWe know that-Frequency, f=cλ      .... Equation…

Q: A scaffold of mass 72 kg and length 6.7 m is supported in a horizontal position by a vertical cable…

A:

Q: Calculate the effort force for the following situation. 15 N V 12 N 35 cm 26 cm 42 cm

A:

Q: How much energy is lost to a dissipative drag force if a 60-kg person falls at a constant speed for…

A: Given that,Mass of person : m=60kgDistance : h = 15 mHere we need to find:Energy lost Now,As we know…

Q: 2. In a region0 w, the wave function is y3(x) = 0. A. Applying the boundary conditions at xx = a,…

A:

Q: Two birds flew in two different random directions from the same point on tree. Bird A moved with a…

A: Since you have posted a question with multiple sub-parts, we willprovide the solution only to the…

Q: A 2100-turn solenoid is 1.9 m long and 15 cm in diameter. The solenoid current is increasing at 1.4…

A: Given data:The no. of patches on the solenoid is n=2100.The length of the solenoid is l=1.9 mThe…