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A circuit contains six 219 O lamps with 60-W bulbs and a 9.4 O heater connected in parallel. The voltage across the circuit is 126 v. What is the current in the circuit if six lamps and the heater are operating?
A mass m = 17.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4047.0 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is ?k = 0.42. The mass leaves th..
A tightrope walker is practicing. She is balanced on a rope at the exact midpoint of the rope. What angle with the horizontal does it make
A wheel rotates about a horizontal axis. It has an outer radius R1 = 18.8 cm and mass M1 = 5.12 kg. What is the acceleration of the hanging weight after it is released
Ethyl alcohol (C2H5OH) has a density of806 kg/m3 and a volume of 1.34 10-3m3. Find the number of molecules in the liquid
One skater throws a .3 kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. When the first skater has caught the returned ball, Illustrate what is the velocity of each of the two skaters?
Draw and explain the internal combustion engine as it relates to carnot cycle and otto cycle
A square loop 10cm on a side carries a current I' = 1A, and is placed 10cm away from a long,straight wire of current I = 10A, Calculate the net force on the loop
Some enterprising physics students working on a catapult decide to have a water balloon fight in the school hallway. At what angle must they be launched to just graze the ceiling
a photon with a wavelength of 3.5 x 10^-13 m strikes a deuteron, splitting it into a proton and a neutron. Calculate the kinetic energy released in this interaction
Two point charges are placed on the x-axis. Charge Q1=+3 microC at x==-6cm and charge Q2=+3microC at x=+6cm. Find the magnitude and direction of the total electric field at point P
The temperature of 1.5 kg of ethanol is 37c. What would the final temperature be if 80 000J of energy as heat is added to the ethanol.
A particular organ pipe can resonate at 231 Hz, 385 Hz, and 539 Hz, but not at any other frequencies in between. Is it an open or a closed pipe? What is the fundamental frequency of this pipe.
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