A circular loop of wire has its radius reduced in half in time ?t. A uniform magnetic field is at an angle of 60° to the plane of the coil, and the magnetic field doubles its intensity in the same time interval ?t. During this interval, what happens to the flux through the coil?
a. It increases.
b. It decreases.
c. It remains the same.
d. More information is needed to make this conclusion.
b
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A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 24 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the opposite direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
a. 0.82 mT b. 0.93 mT c. 0.70 mT d. 0.58 mT e. 0.40 mT
Energy and Momentum: On a frictionless horizontal surface, a 1.50-kg mass traveling at 3.50 m/s suddenly collides with and sticks to a 3.00-kg mass that is initially at rest, as shown in the figure. This system then runs into an ideal spring of force constant (spring constant) 50.0 N/cm.(a) What will be the maximum compression distance of the spring?(b) How much mechanical energy is lost during this process? During which parts of the process (the collision and compression of the spring) is this energy lost?
What will be an ideal response?
Igneous rocks are classified according to their silica content, or color, and their ______________
Fill in the blank(s) with correct word
The force between two quarks increases with separation
Indicate whether the statement is true or false