Questions from College Physics

Q: Which way would a compass point if you were at Earth’s north

Which way would a compass point if you were at Earth’s north magnetic pole?

Q: A straight wire of mass 10.0 g and length 5

A straight wire of mass 10.0 g and length 5.0 cm is suspended from two identical springs that, in turn, form a closed circuit (Fig. P19.74). The springs stretch a distance of 0.50 cm under the weight...

Q: A 1.00 - kg ball having net charge Q =

A 1.00 - kg ball having net charge Q = 5.00 μC is thrown out of a window horizontally at a speed v = 20.0 m/s. The window is at a height h = 20.0 m above the ground. A uniform horizontal magnetic fiel...

Q: Two long, parallel conductors separated by 10.0 cm carry

Two long, parallel conductors separated by 10.0 cm carry currents in the same direction. The first wire carries a current I1 = 5.00 A, and the second carries I2 = 8.00 A. (a) What is the magnitude of...

Q: A proton moves perpendicular to a uniform magnetic field B( at

A proton moves perpendicular to a uniform magnetic field B( at a speed of 1.00 x 107 m/s and undergoes an acceleration of 2.00 x 1013 m/s2 in the positive x - direction when its velocity is in the pos...

Q: An oxygen ion (O+) moves in the xy - plane

An oxygen ion (O+) moves in the xy - plane with a speed of 2.50 x 103 m/s. If a constant magnetic field is directed along the z - axis with a magnitude of 2.00 x 10-5 T, find (a) The magnitude of the...

Q: Sodium ions (Na+) move at 0.851 m/

Sodium ions (Na+) move at 0.851 m/s through a bloodstream in the arm of a person standing near a large magnet. The magnetic field has a strength of 0.254 T and makes an angle of 51.0° with the motion...

Q: A proton travels with a speed of 5.02 x 106

A proton travels with a speed of 5.02 x 106 m/s at an angle of 60° with the direction of a magnetic field of magnitude 0.180 T in the positive x - direction. What are (a) The magnitude of the magnetic...

Q: Figure P19.14a is a diagram of a device called a

Figure P19.14a is a diagram of a device called a velocity selector, in which particles of a specific velocity pass through undeflected while those with greater or lesser velocities are deflected eithe...

Q: A mass spectrometer is used to examine the isotopes of uranium.

A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the velocity selector at a speed of 3.00 x 105 m/s and enter a uniform magnetic field of 0.600 T directed p...