The diagram below represents an ideal pulley system (no mass or friction). What is the force required to lift the 45 kg mass?
A. 442 N
B. 393 N
C. 221 N
D. 147 N
C. 221 N
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On a PV diagram, what kind of process is represented by a horizontal line with an arrow left to right?
A. Isochoric process B. Isobaric compression C. Adiabatic process D. Isothermal compression E. Isothermal expansion F. Isobaric expansion
Capacitors in Combination: Two capacitors are connected as shown in the figure, with C1 = 4.0 µF and C2 = 7.0 µF. If a voltage source V = 90 V is applied across the combination, find the potential difference across C1.
A. 57 V B. 36 V C. 60 V D. 9.0 V
Mars appears from Earth to go through all the phases like Venus
Indicate whether the statement is true or false
The length of a telescope is 2.00 m and the focal length of the objective is 2.0 cm. What is the focal length of the eyepiece?
A) 200 cm B) 202 cm C) 101 cm D) 2.0 cm E) 198 cm