150 kcal of heat raises the temperature of 2.0 kg of material by 400 F°. What is the material's specific heat capacity?
A)
1.35 kcal/kg?C°
B)
1.31 kcal/kg?C°
C)
0.75 kcal/kg?C°
D)
0.34 kcal/kg?C°
E)
0.19 kcal/kg?C°
D
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Consider the following procedural steps:
(1) ground the electroscope (2) remove the ground from the electroscope (3) touch a charged rod to the electroscope (4) bring a charged rod near, but not touching, the electroscope (5) remove the charged rod To charge an electroscope by induction, use the sequence: A) 1, 4, 5, 2 B) 4, 1, 2, 5 C) 3, 1, 2, 5 D) 4, 1, 5, 2 E) 3, 5
The primary reason the Moon lacks an atmosphere is because
A. the Moon lacks sufficient gravity to retain an atmosphere. B. the Moon is made up of the wrong kinds of rocks to release atmospheric gases. C. there is no life on the Moon. D. Earth's gravity pulls away any atmosphere the Moon collects.
A 1959 penny has a diameter of 19.55 mm, a thickness of 1.55 mm, and a mass of 2.500 g. What is its density?
A) 5.37 × 103 kg/m3 B) 21.5 × 103 kg/m3 C) 1.34 × 103 kg/m3 D) 2.68 × 103 kg/m3 E) 1.86 × 10-4 kg/m3
A long straight metal rod has a radius of 2.0 mm and a surface charge of density 0.40 nC/m2 . Determine the magnitude of the electric field 3.0 mm from the axis
a. 18 N/C b. 23 N/C c. 30 N/C d. 15 N/C e. 60 N/C