List two conditions for producing an electric current in a circuit
What will be an ideal response?
(1 ) must supply a potential difference
(2 ) must provide a continuous conducting path
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When scattering 3.28 Angstrom X-rays from a crystal an interference maximum occurs at a scattering angle of 23.0 degrees. What is the crystal spacing?
A. 4.2 Angstroms B. 16.8 Angstroms C. 6.3 Angstroms D. 8.4 Angstroms
What is the average kinetic energy per particle in 1.00 mole of an ideal gas at a pressure of 1.50 atmospheres and a temperature of 20
?
A. 
B. 
C. 
D. 
E. 
A racing car accelerates uniformly from rest along a straight track. This track has markers spaced at equal distances along it from the start, as shown in the figure. The car reaches a speed of 140 km/h as it passes marker 2
Where on the track was the car when it was traveling at 70 km/h? A) Before marker 1 B) At marker 1 C) Between marker 1 and marker 2
The energy required to accelerate a ship the mass of an ocean liner to a cruising speed of 10% of the speed of light is approximately
A) one million times the Earth's current annual energy usage B) one hundred times the Earth's current annual energy usage C) equal to the Earth's current annual energy usage D) ten times the Earth's current annual energy usage