if the string is stationary and the yo-yo accelerates away from it at a rate of 1.3 m/s2, what is the angular acceleration of the yo-yo in rad/s2?
theoretically, how does the radial force exerted on an object vary with the radius of its circular path when it is revolving at constant frequency?
How long does a dream typically last near the end of the sleep cycle, just before waking? a. about 5 minutes b. about 15 minutes c. about 30 minutes d. about 50 minutes please select the best answer from the choices provided a b c d
A nonmechanical water meter could utilize the hall effect by applying a magnetic field across a metal pipe and measuring the hall voltage produced. What is the average fluid velocity in a 3. 50-cm-diameter pipe, if a 0. 750-t field across it creates a 75. 0-mv hall voltage?.
What determines what happens to as main sequence star as it spends time in the main sequence and what happens after it leaves the main sequence?.
As the current in the wire increases, the magnetic field around the wire increases in magnitude without changing its direction. Does this affect the flux through the loop, and if so, how?.
The element cesium, cs, is an alkali metal. Which chemical formula represents a cesium compound that is likely to exist?.
a proton, traveling with a velocity of 3.8 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 7.0 10-14 n and a direction of due south. what are the magnitude and direction of the magnetic field causing the force?
to weigh a fish, a person hangs a tackle box of mass 3.5 kilograms and a cooler of mass 5 kilograms from the ends of a uniform rigid pole that is suspended by a rope attached to its center. the system balances when the fish hangs at a point 1/4 of the rod's length from the tackle box. what is the mass of the fish?
a capacitor is initially connected to a 12 v battery. it is then carefully removed from the battery, and a material with a dielectric constant of 2 is inserted in between the plates of this capacitor, filling the entire space between the plates. what is the resulting voltage of the capacitor?
the picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection plates. suppose an electron beam is accelerated through a 55.0-kv potential difference and then through a region of uniform magnetic field 1.00 cm wide. the screen is located 10.4 cm from the center of the coils and is 49.6 cm wide. when the field is turned off, the electron beam hits the center of the screen. ignoring relativistic corrections, what field magnitude is necessary to deflect the beam to the side of the screen?
how did astronomers discover the relationship between spectral type and mass for main sequence stars?
which observer, in which case, observes the lowest frequency sound from one of the other two sources?
