Which of the following scenarios is an example of impulse?* A full bottle of soda has a greater resistance to change than an empty one.
A biker hits a tree
A skater going at a constant speed on a flat surface.
A book sitting on a table in a classroom.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

There are 3 ways heat can be transferred: through solids, called , through liquids and gases , called , and through electromagnetic waves, called