A calorie is about:
A. 0.24 J
B. 8.3 J
C. 250 J
D. 4.2 J
E. 4200 J
Answer: D. 4.2 J
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A airplane that is flying level needs to accelerate from a speed of 2.00 × 102 m/s to a speed of 2.40 × 102 m/s while it flies a distance of 1.20 km. What must be the acceleration of the plane?
A) 4.44 m/s2 B) 2.45 m/s2 C) 7.33 m/s2 D) 5.78 m/s2 E) 1.34 m/s2
The specific heat capacity of copper is three times the specific heat capacity of lead. Equal masses of copper and lead are heated from room temperature to the temperature of boiling water. To achieve this, the amount of heat added to the copper is __________ times the amount of heat added to the lead
Fill in the blank(s) with correct word
A piano wire of linear mass density 0.0050 kg/m is under a tension of 1350 N. What is the wave speed in this wire?
A) 130 m/s B) 260 m/s C) 520 m/s D) 1040 m/s
The Himalayas in Asia are examples of ______________ mountains
Fill in the blank(s) with correct word