An airplane flies in a semi-circular arc in order to simulate “weightlessness” for its occupants. If the speed at which the plane flies is 750 km/hr, what is the radius of the semicircular path it flies in?
A. 57 km
B. 1.6 km
C. 4.4 km
D. 2.2 km
E. 76 km
C. 4.4 km
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Two solenoids, A and B, are wound using equal lengths of the same kind of wire. The length of the axis of each solenoid is large compared with its diameter. The axial length of A is twice as large as that of B, and A has twice as many turns as B. What is the ratio of the inductance of solenoid A to that of solenoid B?
1.4 2.2 3.1 4.1/2 5.1/4
Valles Marineris is a long valley on Mars believed to resemble the rift valleys of eastern Africa
Indicate whether the statement is true or false
Momentum: What is the momentum of a proton when it is moving with a speed of 0.60c? (mproton = 1.67 × 10-27 kg)
A. 1.2 × 10-19 kg? m/s B. 1.5 × 10-19 kg ? m/s C. 3.0 × 10-19 kg ? m/s D. 3.8 × 10-19 kg ? m/s
How could you identify alpha, beta, and gamma rays coming from an ore sample?