GO Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and allowed to come to thermal equilibrium. Figure 18-34 a gives their temperatures T versus time t . Sample A has a mass of 5.0 kg; sample B has a mass of 1.5 kg. Figure 18-34 b is a general plot for the material of sample B . It shows the temperature change Δ T that the material undergoes when energy is transferred to it as heat Q . The change Δ T is plotted versus the energy Q per unit mass of the material, and the scale of the vertical axis is set by Δ T s = 4.0 C°. What is the specific heal of sample A ? Figure 18-34 Problem 34.
GO Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and allowed to come to thermal equilibrium. Figure 18-34 a gives their temperatures T versus time t . Sample A has a mass of 5.0 kg; sample B has a mass of 1.5 kg. Figure 18-34 b is a general plot for the material of sample B . It shows the temperature change Δ T that the material undergoes when energy is transferred to it as heat Q . The change Δ T is plotted versus the energy Q per unit mass of the material, and the scale of the vertical axis is set by Δ T s = 4.0 C°. What is the specific heal of sample A ? Figure 18-34 Problem 34.
GO Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and allowed to come to thermal equilibrium. Figure 18-34a gives their temperatures T versus time t. Sample A has a mass of 5.0 kg; sample B has a mass of 1.5 kg. Figure 18-34b is a general plot for the material of sample B. It shows the temperature change ΔT that the material undergoes when energy is transferred to it as heat Q. The change ΔT is plotted versus the energy Q per unit mass of the material, and the scale of the vertical axis is set by ΔTs = 4.0 C°. What is the specific heal of sample A?
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
Chapter 18 Solutions
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