Physics Current Electricity Level: University
What is the current in a 60.0 W bulb when connected to a 120-V emf?
Physics Current Electricity Level: University
ResistanceWhat is the resistance between points A and B in the following?
Question Diagram
Physics Electrostatics Level: University
CapacitorFind the equivalent capacitance between points A and B for the three capacitors in parallel in the following?
Question Diagram
Physics Current Electricity Level: University
ResistanceAn aluminum bus bar has the dimensions 0.50 cm x 2.0 cm x 20.0 m . What is the resistance at 20degree C?
Physics Current Electricity Level: University
ConductanceA silver wire of diameter 1.0 mm carries a current of 150 mA. The density of conduction electrons in silver is 5.8 x 10^28 m^-3. How long (on average) does it take for a conduction electron to move 1.0 cm along the wire?
Physics Current Electricity Level: University
The starter motor in a car draws 220.0 A of current from the 12.0 V battery for 1.20s . Determine how much charge is pumped by the battery and how much electrical energy is supplied to the battery.
Physics Current Electricity Level: University
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. If 3.8 x 10^16 Ca^2+ and 6.2 x 10^16 Cl ions per second move in opposite directions through an imaginary area between the electrodes what is the current in the solution?
Physics Kinematics Level: University
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0o below the horizontal. The negligent driver leaves the car in neutral and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration of 4.00 m/s2 (second square) for a distance of 50.0 m to the edge of the cliff. The cliff is 30.0 m above the ocean. Find (a) The car's position relative to the base of the cliff when the car lands in the ocean and (b) The lenght of time the car is in the air.
Physics Force & Laws Of Motion Level: University
Two people pull on a stubborn mule. Find (a) The single force that is equivalent to the two force shown and (b) The force that a third person would have to exert on the mule to make the net force equal to zero.
Physics Properties Of Matter Level: University
Which fundamental constant links (relates) the temperature of a gas to its pressure and volume?a. Avogadro s number
b. Boltzmann s constant
c. Planck s constant
d. Charles constant
Physics Force & Laws Of Motion Level: University
A 100lb weight is hanging from a spool the brake is released on the spool to allow the weight to fall at 10 feet per second what is the formula to determine the weight of the weight while falling? would this formula apply to all weights and rates of fall?
Physics Gravitation Level: University
Find an expression for gravity in terms of newtons universal gravitational constant G a radius of a planet R the density of a rock hence determining the radius of the planet. He knows that the volume of a sphere is worked out by 4/3 pie R3. On the planet its acceleration due to gravity is 0.113 ms/2 and the density of a rock which worked out the gravity is 2.80 x 10^3 kg m-3 ( the acceleration was worked out by dropping it from 1 metre and timing it (4.2s)
Physics Waves And Oscillations Level: University
Tuning forkWith the water in the tube at the level for the tube length L1 of the first resonance of the first tuning fork (a) Would another tuning fork with a frequency lower than that of the first tuning fork produce a resonance?
(b) Would another tuning fork of some higher frequency produce a resonance?
(c) If you answer yes in either case what would be the frequency of the other fork?
Physics Waves And Oscillations Level: University
What are the resonant frequencies for an open organ pipe of fixed length L?
Physics Waves And Oscillations Level: University
Resonance of tuning forkFor a resonant tube apparatus with a total tube length of 1 m how many resonance positions would be observed when the water level is lowered through the total length of the tube for a tuning fork with a frequency of (a) 500 Hz (b) 1000 Hz ?
