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A belt sander, shown in Figure P1.63, weighs 10 lb and has a belt speed of 1000 ft/min. A downward force of 10 lb (in addition to the weight) is applied on the sander. If the coefficient of friction between the belt and a flat table top being sanded is 0.30, determine (a) the power transmitted by the belt in hp, and (b) the work done while sanding the table top for 15 minutes in ft-lb.
The magnetic field is always perpendicular to the velocity of the charge. Magnetic fields deflect moving charges. Magnetic fields are created by moving charges.
A cord of length 1.4 meter is fixed at both ends. Its mass per unit length is 1.0 g/m and the tension is 11 N. Evaluate the frequency of the fundamental oscillation
Modern computer memories use parallel-plate capacitors to store information, and these capacitors are the basic elements of a random-access memory (RAM) chip. What is the capacitance of the RAM capacitor
A tennis ball on Mars, where the acceleration due to gravity is 0.379g and air resistence is negligible, How fast was it moving just after being hit
Consider a system of two particles of reduced mass μ that interact according to the force F= -kr3 , where is the distance among them. Write down the potential for the force, and effective potential for the system. What is the rotation period for this..
A physics student playing with an air hockey table (a frictionlesssurface) finds that if she gives the puck a velocity of 3.85 m/salong the length (1.78 m) of the table at one end, What is the angle of inclination
An electron traveling at 745 m/s enters a1.7 T magnetic field. The angle between the velocity and the field is 88 degree. Evaluate what is the radius of the resulting circular path
A single-loop circuit consists of a 7.3? Resistor, 12.0 H inductor, and a 3.1 ?F capacitor. Initially the capacitor has a charge of 6.2? C and the current is zero. Compute the charge (in C) on the capacitor N complete cycles later for N = 5.
suppose that you need to get a heavy couch into the bed of a pickup truck. part a figure you know the bed of the truck
An 8.00 kg baby is bouncing in her baby bouncer (a seat attached to a spring that hangs from the ceiling). The baby is pushed down an additional 2 cm and released. What is the potential energy in the spring just before that release
An electron that has an energy of approximately 62 eV moves between rigid walls 1.4 nm apart. Find the quantum number n for the energy state that the electron occupies.
A long wire carrying a 5.90A current reverses direction by means of two right-angle bends, as shown in the figure (Figure 1). The part of the wire where the bend occurs is in a magnetic field of 0.666T confined to the circular region of diameter 75.0..
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