How would you describe the volume of the following object?
the amount of water in a swimming pool
A) microscopic
B) macroscopic
C) submicroscopic
D) all of the above
E) none of the above
Answer: B
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Kirchhoff's Rules: A multiloop circuit is shown in the figure. Find the current I1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)
A. -2 A B. 2 A C. 6 A D. -5 A E. 0 A
An airplane is flying at a speed of 200 m/s in level flight at an altitude of 800 m. A package is to be dropped from the airplane to land on a target on the ground. In what direction will the package be traveling when it hits the ground?
A) 49.3° below horizontal B) 62.7° below horizontal C) 54.8° below horizontal D) 84.2° below horizontal E) 32.1° below horizontal
A current loop is oriented in three different positions relative to a uniform magnetic field. In position 1 the plane of the loop is perpendicular to the field lines. In position 2 and 3 the plane of the loop is parallel to the field as shown. The torque on the loop is maximum in
a.
position 1.
b.
position 2.
c.
position 3
d.
positions 2 and 3.
e.
all three positions.
High-speed stroboscopic photographs show that the head of a golf club of mass 200 grams is traveling at 55.0 m/s just before it strikes a 46.0-gram golf ball at rest on a tee. After the collision, the clubhead travels (in the same direction) at 40.0 m/s. Find the speed of the golf ball just after impact.
What will be an ideal response?