Question

Potential energy of falling weights becomes kinetic energy of paddle. The paddle's kinetic energy in turn becomes internal energy of the water, indicated by rising temperature. FIGURE 13.1 Joule's apparatus for measuring what he called "the mechanical equivalent of heat." The masses of the two weights are both equal to 0.5 kg. (Neglect any inertia of the rest of the apparatus.) The masses fall 7 meters. Assume the mass of the water is 0.1 kg, and the water absorbs 75 percent of the heat. Calculate the rise in temperature of the water. (in degC) A: 2.786 B: 4.040 C: 5.857 D: 8.493 E: 12.315 F: 17.857 G: 25.893 H: 37.545

          Potential energy of falling weights becomes kinetic energy of paddle.
The paddle's kinetic energy in turn becomes internal energy of the water, indicated by rising temperature.
FIGURE 13.1 Joule's apparatus for measuring what he called "the mechanical equivalent of heat."
The masses of the two weights are both equal to 0.5 kg.
(Neglect any inertia of the rest of the apparatus.)
The masses fall 7 meters.
Assume the mass of the water is 0.1 kg,
and the water absorbs 75 percent of the heat.
Calculate the rise in temperature of the water.
(in degC)
A: 2.786 B: 4.040 C: 5.857 D: 8.493 E: 12.315 F: 17.857 G: 25.893 H: 37.545

Potential energy of falling weights becomes kinetic energy of paddle.
The paddle's kinetic energy in turn becomes internal energy of the water, indicated by rising temperature.
FIGURE 13.1 Joule's apparatus for measuring what he called "the mechanical equivalent of heat."
The masses of the two weights are both equal to 0.5 kg.
(Neglect any inertia of the rest of the apparatus.)
The masses fall 7 meters.
Assume the mass of the water is 0.1 kg,
and the water absorbs 75 percent of the heat.
Calculate the rise in temperature of the water.
(in degC)
A: 2.786 B: 4.040 C: 5.857 D: 8.493 E: 12.315 F: 17.857 G: 25.893 H: 37.545

Added by Paulina P.

Question

Please give Ace some feedback