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Water is moving with a speed of 5m/s during a pipe with a cross-sectional area of 4 cm ^2. The water gradually descends 10mas the pipe cross-sectional area increases to 8cm^2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.5 x 10^5 Pa, what is the pressure at the lower level?
A circuit consists of a resistor in series with an inductor and an ac generator that supplies a voltage of 115 V. Find the average power delivered to the circuit
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
A 400 g mass is suspended from a thread 45 cm long that can sustain a maximum tension of 8.0 N before breaking. What is the maximum allowable amplitude for pendulum motion of this system
A ferry can travel at an optimal speed of 8 km/h in stillwater measured relative to the shore. What is the optimal speed of the ferry, relative to the shore, if it moves perpendicular to a 6km/h current?
What is the period of revolution? please give me answer and units to both questions. dont just give me equation
An electron moves along the z-axis with vz = 4.4 x 10^7 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (x, y, z) positions?
Sam (68.3 kg) and Alice (41.5 kg) stand on an ice rink, providing them with a nearly frictionless surface to slide on. Sam gives Alice a push, Calculate the change in the kinetic energy of the Sam-Alice system
A spring is hung from the ceiling. A 0.463 -kg block is then attached to the free end of the spring.Find the angular frequency of the block's vibrations
A torsion pendulum is made from a disk of mass m = 7.1 kg and radius R = 0.71 m. What is the angular frequency of oscillation of this torsion pendulum
two blocks are connected by a massless rope. the rope passes over an ideal frictionless and massless pulley such that
The dew point at a location 50 km 20° south of west of a recording station is 4°C higher than at the station. what is the local change in dew point at the station
A horizontal slingshot consists of two light, identical springs (with spring constants of 27.7 N/m) and a light cup that holds a 1.47-kg stone, determine the system's total mechanical energy
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