Recent content by iceT

1) Five thousand joules of heat is put into a Carnot engine whose hot and cold reservoirs have temperatures of 500 and 250 K, respectively. How much heat is converted into work? here's what i did... i know that... Q[SIZE="2"]C / Q[SIZE="2"]H = T[SIZE="2"]C / T[SIZE="2"]H W = 5000, Tc =...

thanx a lot Dr Al :smile: :approve:

36.388:biggrin:

ok...so it should be 2050 / ( 4186 ) ( .8 ) = 0.612 BUT IT STILL WRONG... ok..is it 37.612 ?

Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. While a person is exercising, 0.8 kg of blood flows to the surface of the body and releases 2050 J of energy. The blood arriving at the surface has the temperature of...

1.60 kg object is hanging from the end of a vertical spring. The spring constant is 48.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential energy...

A pole-vaulter approaches the takeoff point at a speed of 6.00 m/s. Assuming that only this speed determines the height to which he can rise, find the maximum height at which the vaulter can clear the bar. in this 1 I am lost...... I ONLUY GOT 1 GIVINGS (6.00 m/s ) should i use the ...h0-hf...

Hello all..I need some help on these 2 questions..:rolleyes: Thanx -A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.47 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert...