Physics Electromagnetic Waves Level: Misc Level
Calculate the transmission frequency of an FM station in which the wavelength is 3.0 m.
Physics Electromagnetic Waves Level: Misc Level
Calculate the wavelength of a beam of visible violet light.
Physics Electromagnetic Induction Level: Misc Level
A 8.5 cm diameter loop of wire is in a 1. 15 T magnetic field. The loop is removed from the field in 0. 12 s. what is the average induced emf?
Physics Electromagnetic Induction Level: Misc Level
A solenoid has an inductance of 85.0 mH and a resistance of 0.300 ohms. Find the time constant for this current.
Physics Current Electricity Level: Misc Level
A coil has a resistance R= 2.00 ohms and an inductance of 0.325 H.Determine the current in the coil if 120 V dc is applied to it.
Physics Electromagnetic Induction Level: Misc Level
A transformer for a portable radio reduces 120 V ac to 9.0 V ac The secondary coil contains 40 turns and the radio draws 350 ma. Calculate the current in the primary.
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A thin 11 cm long solenoid has a total of 400 turns of wire and carries a current of 2.0 A. Calculate the field inside near the center.
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A cicrular coil of wire has a diameter of 20. 0 cm and contains 12 loops. The current in each loop is 2.5 A and the coil is placed in a 1.8 T External magnetic field. Determine the maximum torque exerted on the coil by the field.
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
The two wires of a 2.5 m long appliance cord are 3. 5 mm apart and carry a current of 7. 0 A dc. Calculate the force one wire exerts on the other.
Physics Current Electricity Level: Misc Level
Three 40 ohm light bulbs and three 70 ohm light bulbs are connected in series. what is the total resistence for the circuit?
Physics Current Electricity Level: Misc Level
Two 120 ohm resisters are connected in parallel to a 24.0 V battery. what is the equivlent resistence for the circuit?
Physics Kinematics Level: Misc Level
In Bosnia, the ultimate test of a young mans courage once was to jump off a 400 year old bridge (now destroyed) into the River Neretva, 21 meters below the bridge. The free fall acceleration is 9. 80 m/s^2. a) How long did the jump last?
b. How fast was the diver traveling upon impact with the river?
c. If the speed of sound in air is 339 m/s, how long after the diver took off did a spectator on the bridge hear the splash?
Physics Force & Laws Of Motion Level: Misc Level
Another scheme to catch the roadrunner has failed .Now a safe falls from rest from the top of a 20. 5 meter high cliff toward wile E.Coyote, who is standing at the base. wile first notices the safe after it has fallen 16.0 meters. How long does he have to get out of the way? The free fall acceleration is 9. 80 m/s^2
Physics Kinematics Level: Misc Level
The driver of a truck slams on the brakes when he sees a tree blocking the road.The truck slows down uniformly with an acceleration of - 4.90 m/s ^2 for 3.80 s. making skid marks 54.1 m long that end at the tree.with what speed does the truck then hit the tree?
Physics Waves And Oscillations Level: Misc Level
The highest note written for a singer in a published score was F- sharp above high C, 1,480 kHz.
a. Find the wavelength of this sound air
b.Transposed the note down to F above high C, 1397 KHz. By what increment did the wavelength change.
