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Which is larger for a uniform disk of mass M and radius R that is rolling without slipping: its translational or its rotational kinetic energy? A. It's translational kinetic energy B. It's rotational kinetic energy C. Both are the same D. Question can not be answered without knowing the exact values for the mass and radius
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
Power lines at 20,000V (rms) are connected to a utility pole transformer. Find the ratio of the number of turns in the primary to the number of turns in the secondary
A man stands on the roof of a building of height 16.8m and throws a rock with a velocity of magnitude 31.8m/s, Calculate the magnitude of the velocity of the rock just before it strikes the ground
if 5 capacitors each of 5 micro F are connected in series with 4 capacitors each of 4 uF capacitances in parallel. what is the the net capacitance
A Piece of ice of mass mi at 0 C is placed in water of mass mw at 20 C. The system is in a container of negligible heat capacity, what is the equilibrium temperature of the system
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state
1. A communications system uses QPSK instead of binary PSK. How much bandwidth is saved 2. A modem utilizes 8PSK modulation. If the modem's baud rate is 24 kbps, what is the information rate in kbps
The mass of a certain planet is 6.15×1023 kg, and its radius is 2535 km. What is the acceleration due to gravity on the planet's surface
A proton ,a neutron and an alfa particle ,accelerated through the same potential difference ,enter a region of uniform magnetic field moving at right angles to B.(a) compare their kinetic energies .(b) if the radius of the proton’s circular path is 1..
Use graphical techniques to find out the direction of the dog’s resultant displacement vector. Give the direction of the resultant displacement in degrees (out of 360).
a mass m is attached to a string of length l and released when the string is horizontal, causing the mass to fall in a circular path. determine the maximum value of the tension force in the string
You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 25.5 N. What is the sample's specific heat
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