An object is acted on by a drag force with a magnitude that is proportional to the speed. The object accelerates downward at 3.00 m/s2 when it is falling with a speed 20.0 m/s. What is the terminal speed of the object as it is falling?
A)
38.1 m/s
B)
55.9 m/s
C)
28.8 m/s
D)
65.4 m/s
E)
43.2 m/s
C
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Two parallel straight wires are 7.0 cm apart and 50 m long. Each one carries a 18-A current in the same direction. One wire is securely anchored, and the other is attached in the center to a movable cart
If the force needed to move the wire when it is not attached to the cart is negligible, with what magnitude force does the wire pull on the cart? (?0 = 4? × 10-7 T ? m/A) A) 46 mN B) 37 mN C) 66 mN D) 93 mN
A saturated hydrocarbon contains only ______________ bonds, and its hydrogen content is at a maximum
Fill in the blank(s) with correct word
A uniform rod of length (L = 2.0 m) and mass (M = 1.5 kg) is pivoted about a horizontal frictionless pin through one end. The rod is released from rest at an angle of 30° below the horizontal. What is the angular speed of the rod when it passes through the vertical position? (The moment of inertia of the rod about the pin is 2.0 kg/m2.)
a. 3.5 rad/s b. 2.7 rad/s c. 3.1 rad/s d. 2.3 rad/s e. 1.6 rad/s
How would you include contact resistance between the two materials Derive the appropriate difference equations.
GIVEN
Interface between two materials with different thermal conductivities and contact resistance at the
interface
FIND
(a) The appropriate difference equations
SKETCH
