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What is the tension of the chain midway up the chain. And Determine the tension in the chain at the point where the chain is attached to the ceiling.
Find the magnitude and direction of the force that the walker applies to the leash in order to counterbalance the total force exerted by the dogs.
The helical path followed by the proton has a pitch of 5.0 mm. Determine the angle between the magnetic field and the velocity of the proton.
100 kW of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 13273.9 V. a) How much current flows in the lines? Answer in units of A.
A stopper tied to the end of a string is swung in a horizontal circle. If the mass of the stopper is 13.0 g, and the string is 93.0 cm, and the stopper, and the stopper revolves at a constant speed
Under water it displaces a volume of 20 cubic centimeters of water. whats the hardness? what is the specific gravity of this mineral? what is this mineral?
Calculate the electric field at the center of a square 69.5 cm on a side if one corner is occupied by a +51.6 µC charge and the other three are occupied by -21.2 µC charges.
A 62-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when: the elevator is descending at a constant rate of 12 m/s?
That is a nice amount of time in pleasant company but perhaps a painful string of microseconds in unpleasant company. How many microseconds are in 2 fortnights?
A worker pushes a 500 N weight wheelbarrow up a ramp in length and inclined at 20 degrees with the horizontal. What potential energy does the wheelbarrow experience?
IP A 0.450kg block of wood hangs from the ceiling by a string, and a 7.00×10^-2 kg wad of putty is thrown straight upward. Is the mechanical energy of this system conserved?
A solid cylindrical disk has a radius of 0.15 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 50-N force is applied tangentially to the disk,
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the glass at the same angle of refraction. The red light has an angle of
What is the equilibrium temperature of this system? If your answer is 0° C, determine the amount of water that has frozen.
A 2.8 kg block of wood sits on a table. A 3.0g bullet, fired horizontally at a speed of 490 m/s, goes completely through the block, emerging at a speed of 190 m/s .
A simple pendulum consists of a bob of mass 1.8kg attached to a string of length of 2.5m. The pendulum is held at an angle of 30 degrees from the vertical by the light horizontal string attached to
The other a capacitance of 4.5 µF. These two capacitors together store 6.0 10-5 C of charge. What is the voltage of the battery?
A space station is constructed in the shape of a wheel 16 rm m in diameter, with essentially all of its 6.0×105 rm kg mass at the rim. Once the station is completed, it is set rotating at a ra
A 19 kg loudspeaker is suspended 2.0 m below the ceiling by two cables that are each 10 degrees from vertical.what is the tension of the cable?
A uniform rod 10ft long and weighing 30 pounds is supported in a horizontal position on a fulcrum with weights of 40 and 50 pounds suspended from its ends. Compute the position of the fulcrum.
Sam, a train engineer, blows a whistle that has a frequency of 5.0 102 Hz as the train approaches a station. If the speed of the train is 33 m/s, what frequency will be heard by a person at the stat
A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path?
A spool of wire of mass 5.3 kg and radius 0.73 m is unwound under a constant wire tension 14 N. Assume the spool is a uniform solid cylinder that rolls without slipping. Find the friction force on the
Find the magnitude and direction of the electric force that acts on the particle. Find the magnitude and direction of the electric field that the particle experiences.
A computer disk is 8.0 cm in diameter. A reference dot on the edge of the disk is initially located at theta=45 degrees. The disk accelerates steadily for 0.50 s, reaching 2000 rpm, then coasts at