Physics Waves And Oscillations Level: Misc Level
Should a tuning fork be set into oscillation by striking it with or on a hard object?
Physics Waves And Oscillations Level: Misc Level
What is the variable used in studying resonance in an air column in (a) a closed organ pipe of fixed length; (b) a resonance tube apparatuus?
Physics Properties Of Matter Level: Misc Level
A uniform slid cube with edge length 10 cm has a mass of 700g. Will this cube float or sink in water? If it floats, how much of its volume will be submerged?
Physics Circular Motion Level: Misc Level
A car approaches a level circular curve (radius+60.0m). If the coefficient of static friction is 0.7, what is the maximum speed at which the car negotiates the curve at constant speed, without skidding?
Physics Properties Of Matter Level: Misc Level
The four tires of an automobile are each inflated to a pressure of 29 psi (2.0x10^5 Pa).If each tire has a contact area with the ground of 0.024 m^2, find the weight of the car.
Physics Properties Of Matter Level: Misc Level
In a car lift used by a service station , compressed air exerts a force on a small piston of radius 5 cm. This pressure is transmitted to a second piston of radius 15 cm. What force must the compressed air exert on the small piston to lift a car whose mass is 1200kg?What compressed air pressary to produce this force? Is this a reasonable answer? Explain.
Physics Vectors Level: Misc Level
Joe must paddle a canoe such that he reaches camp at 30 degrees north of east, traveling at 10km/hr. However there is a current coming downstream at 5km/hr heading 45 degrees south of east.What will Joe,s water velocity and direction be in order to attain his intended velocity and direction?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
At New York City, the earth,s magnetic field has a vertical component of 5.2 x10-5 T that points downward (perpendicular to the ground) and a horizontal component of 1.8x10-5 T that points toward geographic north (parallel to the ground)> What is the magnitude and direction of the magnetic force on a 14.0 m long, straight wire that carries a current of 8 A perpendicularly out of the ground? magnitude N
direction
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A positively charged particle of mass 5.60 x10-8 kg is traveling due east with a speed of 30 m/s and enters a 0.44 T uniform magnetic field. The particle moves through one- quarter of a circle in a time of 2.80 x10-3 s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic field.
(a) What is the magnitude of the magnetic force acting on the particle? N
(b) What is the magnitude of the charge of the particle? C
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A square coil of containing a single turn is placed in a uniform 0.30 T magnetic field, as the drawing shows. Each side has a length of 0.30 m, and the current in the coil is 12 A. Determine the magnitude of the magnetic force on each of the four sides.
1.top N
2. bottom N
3. left N
4.right N
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A particle of mass 7.00 x 10-8 kg and charge 8.8 uC is traveling due east.It enters perpendicularly a magnetic field whose magnitude is 30.0 T. After entering the field, the particle completes one-half of a circle and exits the field traveling due west.How much time does the particle spend traveling in the magnetic field?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A charged particle moves through a velocity selector at a constant speed in a straight line. The electric field of the velocity selector is 4.25x103 N/C, while the magnetic field is 0.360 T. When the electric field is turned off, the charged particle travels on a circular path whose radius is 4.45 cm. Find the charge-to-mass ratio of the particle. C/kg
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
An u- particle has a charge of +2 e and a mass of 6.64x10-27 kg. If is accelerated from rest through a potential difference that has a value of 1. 02x106 V and then enters a uniform magnetic field whose magnitude is 3.50 T.The u- particle moves perpendicular to the magnetic field at all times.
(a) What is the speed of the u-particle? m/s
(b)What is the magnitude of the magnetic force on it? N
(c) What is the radius of its circular path? m
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A charge particle enters a uniform magnetic field and follows the circular path shown in the drawing.
(a)Is the particle positively or negatively charged?
1.positive
2.negative
3.electrically inert
Why?
(b) The particle,s speed is 110 m/s, the magnitude of the magnetic field is 0.52 T, and the radius of the path is 960 m. Determine the mass of the particle, given that its charge has a magnitude of 8.2 x 10-4 C. kg
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A particale with a charge of +8.4 uC and a speed of 45 m/s enters a uniform magnetic field whose magnitude is 0.30 T. For each of the cases in the drawing, find the magnitude and direction of the magnetic force on the particle.
