What is the minimum amount of energy in kcal required to completely melt 5.2 kg of lead initially at 20.0°C? (specific heat Clead = 0.0311 kcal/kg°C, melting temperature of lead, Tmelting= 328°C, and latent heat of melting LLead = 5.9 kcal/kg)?

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.