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A charged particle initially moving south in a vertically downward magnetic field is deflected toward the east. What is the sign of the charge on the particle? explain how you got your answer.
A roller coaster goes through a complete loop. If the train is given an initial speed of v0 = 30 m/s, what is the largest value that the radius R can have if the car is to remain in contact with the
A closed circuit consists of two semicircles of radii 37 and 20 cm that are connected by straight segments. A current of 3.2 A flows around this circuit in the clockwise direction. Find the magnetic
When he accelerates from a stoplight, the tassel deflects backward toward the rear of the car at an angle of 7o relative to the vertical. Find the tension in the string holding the tassel.
If the block compresses the spring 4.8 cm before coming to rest, what is the force constant of the spring?
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 10.5 rad/s2. Find the speed of a point on the blade 5.35 m from the axis of rotation when the blade h
Suppose that the coefficient of friction between your feet and the floor, while wearing socks, is 0.250. Knowing this, you decide to get a running start and then slide across the floor.
An object with a height of 10 cm is reflected from a mirror. The image reflected from the mirora is INVERTED and has a height of 5 cm . What is the magnification of the mirror?
The speed of light in a vacuum is 3*10^8 m/s . The speed of light whitin a particular substance is 1.5 * 10^8 m/s. The index of reflaction of the substance is:
A uniform rod of length 200cm is bent at its midpoint into a right angle. Then the bent rod is placed along the negative x and positive y axes, with the bent point located at the origin. What is the
An object is initially moving with a speed of 10.0 m/s in the direction 60.0 degrees N of E. Ten seconds later, the object is moving with a speed of 20.0 m/s in the direction 30.0 degrees S of E. W
An electron with a speed of 2.0 X 106 m/s moves into a uniform electric field of 500 N/C that is parallel to the electron's motion. How long does it take to bring the electron to rest?
A railroad car of mass 2.50 104 kg moving at 2.00 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. What
A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. The mass collides with another mass, m, and rebounds with velocity -1 m/s. What impulse was delivered to mas
A 1/2 kg ball is dropped from rest at a point 5m above the floor, and bounces back with a speed of 6 m/s. What impulse is applied on the ball during the collision with the floor?
A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 9.0 m/s at the end of 3.0 s.
The outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. Relative to this mirror, a truck traveling in the rear has an object distance of 15 m. Find the magnific
A hydrogen atom that has lost its electron is moving ( in the + Y direction ) in a region where the magnetic field is directed from (-Z) to (+Z). What direction will the atom be deflected?
A car is coasting at 20 meters/sec at the top of a 100 meter high hill. The car rolls down the hill. How fast is the car traveling when it reaches the bottom? There is no friction and the car's engi
Find the magnetic force on the electron. Hint: use -q instead of +q in the magnetic force equation and remember force is a vector.
An x-ray beam of a certain wavelength is incident on a crystal, at 31.3° to a certain family of reflecting planes of spacing 41.4 pm. If the reflection from those planes is of the first order, wha
Question: An electron moves in a 0.5nT B-Field. If the radius of the circular orbit is 1cm, what is its period, angular velocity, linear velocity, linear momentum, angular momentum and kinetic energ
A particle enters a particle spectrometer. You are not sure of the charge or mass but you do know it banks right. You are not sure of the magnitude of the B-field, but that it does go into the page.
Markings to indicate length are placed on a steel tape in a room that is at a temperature of 22°C. Measurements are then made with the same tape on a day when the temperature is 27°C. Are th
What uniform magnetic field, applied perpendicular to a beam of electrons moving at 2.3 x 106 m/s, is required to make the electrons travel in a circular arc of radius 0.45 m?