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A pendulum consists of a ball of mass m=0.5kg attached to a string of length L=0.75m. The ball is pulled aside so that the string makes an angle of 30 degrees with the vertical and is released from rest. Find
(a) the speed V at the bottom of the swing and
(b) the tension in the string at the bottom of the swing.
A gas cylinder with a tight-fitting, movable piston contains 200 cm3 of air at 1.0 atm. What is the volume of gas at this depth
A 0.0220 kg bullet moving horizontally at 450 m/s embeds itself into an initially stationary 0.500 kg block. How far does this combination travel before stopping
A vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire?
A magnetic field has a magnitude of 0.0014 T, and an electric field has a magnitude of 4.2 × 103 N/C. compute the magnitude of the net force that acts on the charge
A transformer with 580 turns in its primary coil has to decrease the voltage from 6380 V to 220 V for home use
assume you are 90 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.5 mm.
An automobile accelerates from zero to 28.0 m/s in 7.0 s. The wheels have a diameter of 0.8 m. What is the average angular acceleration of each wheel
How much current flows throughout the television.
A certain quantity of steam has a temperature of 100.0 oC. To convert this steam into ice at 0.0 oC, what would be the linear speed of the ice
A person with perfect pitch sits on a bus bench listening to the 450 Hz horn of an approaching car. If the person detects the frequency of 470 Hz, how fast is the car moving.
A certain dog whistle operates at 21.6 hz while another brand X operates at an unknown frequency. estimate the operating frequency of brand X
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
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