A satellite orbits the earth at an unchanging speed of 18,000 mph. This satellite
A) is accelerated. B) has a changing velocity.
C) Both of the above. D) None of the above.
C
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What is the potential difference VB ? VA when I = 0.50 A in the circuit segment shown below?
a.
+28 V
b.
+2.0 V
c.
?28 V
d.
?2.0 V
e.
+18 V
The coefficient of linear expansion of steel is 12 × 10-6 K-1. What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K?
A) 1.2 cm B) 1.4 cm C) 1.6 cm D) 1.8 cm E) 2.0 cm
Determine the viscosity and the kinematic viscosity for air at 330 K and at 350 K.
What will be an ideal response?
For a real substance the enthalpy is function of temperature and pressure. Write an integral equation that expresses the enthalpy change per unit mass of the substance when the temperature and pressure change from T1 to T2 and p1 to p2.
What will be an ideal response?