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A stretched guitar string has a fundamental frequency of 100 Hz. By how much (i.e., by whatfactor) would you change each of the following to lower the fundamental to 25 Hz?(a) length(b) tension(c) mass per unit length(d) diameter
Transmission electron microscopes that use high-energy electrons are employed in many areas including the study of biology samples (like a virus) and nanoscience research and development (allow particles and carbon nanotubes, for example).
calculate the speed of an electron that is accelerated through the same potential difference, and Calculate the speed of a proton
a 2.50muc charge is located at a point a at the origin and a -6.00 muc charge is located at point b at 20.0cm on the
the froghopper philaenus spumarius is supposedly the best jumper in the animal kingdom. to start a jump this insect can
Two masses are placed at different points along the meter stick of negligible mass: 0.250kg at 0.200m and 0.500kg at 0.500m. Where is the center of mass of this system
A uniform disk with a mass of 885 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz when Jill drops a 145-g clod of clay on a point 8.40 cm from the center of the disk, where it sticks. What is the new rota..
Two plates of area 865 cm2 each are separated by a distance 42.1 cm. what is the potential difference between the two plates
An object with total mass mtotal = 14 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg, What is the magnitude of the velocity of the center of mass of the pieces after the collision
A disk, initially rotating at 149 rad/s, is slowed down with a constant angular acceleration of magnitude 4.23 rad/s2. (a) Explain by how much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?
A rectangular loop of wire hangs vertically as shown in the figure. A magnetic field is di- rected horizontally, perpendicular to the wire, and points out of the page at all points as rep- resented by the symbol ?.
The angular velocity of the Earth is decreasing, changing the length of a day. Through the year 2000 it took 0.548 s longer to complete 365 revolutions than in the year 1900.
a geostationary communications satellite orbits the earth directly above the equator at an altitude of 34800.
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