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two capacitors give an equivalent capacitance of 900 pf when connected in parallel and an equivalent capacitance of 170
a solid disk of mass m and radius r is pivoted so that it can rotate about its center the disk is initially at rest a
one billiard ball is shot east at 35 ms a second identical billiard ball is shot west at 21 ms the balls have a
a pendulum clock has an aluminum pendulum exactly 10 m long when the clock is calibrated perfectly by how much is it
a battery is connected in series with a r 031 resistor and an inductor as shown in the figure below the switch is
a 30 kg launching machine fires a 250 gram projectile horizontally at 100 ms this causes the machine to slide backward
a hawk flies in a horizontal arc of radius 144 m at a constant speed 355 ms a find its centripetal acceleration b it
a coin placed 304 cm from the center of a rotating horizontal turntable slips when its speed is 488 cms b what is the
a tightrope walker who weighs 640 n walks along a steel cable when he is halfway across the cable makes an angle of
a man standing in front of a camera the camera lens has a 53 mm focal length how high is the mans well-focused image on
starting from rest a 1000 kg piece of luggage slides 600 m down a rough 30 degree incline the it slides along a
glenn gently pours acetic acid index 127 onto some antimony trioxide index of refraction 235 what angle will glenn find
one cylinder in the diesel engine of a truck has an initial volume of 600 cm3 air is admitted to the cylinder at 30 0c
for the same ideal gas thermometer what temperature t corresponds to a pressure of 000400 atm beginning part of
an ice cube tray contains enough water at 220 degc to make 18 ice cubes that each have a mass of 300g the tray is
a 060 kg piece of aluminium at a temperature of 180 c is dumped into 900 ml of water at a temperature of 30 ca whats
a nuclear power plant generates 3000 mw of energy from nuclear reactions in reactorrsquos core this energy is used to
a box 10 kg in massis sitting 4 meters above the ground on the edge of a skateborders half-pipe ramp a semi-circle
what is the radius of a helium-filled balloon that would carry a load of 3000 n in addition to the weight of the helium
a monatomic ideal gas with an initial pressure of 500 kpa and an initial volume of 180l expands isothermally to a final
the rotor of an electric motor has rotational inertia im 759 x 10-3 kgmiddotm2 about its central axis the motor is
suppose the ray in air with n 100 enters a slab with n 237 at a 374deg angle with respect to the normal then exits
three particles of mass m 24 kg are fastened to three rods of length d 069 m and negligible mass the rigid assembly
a spring oscillator is designed with a mass of 0277 kg it operates while immersed in a damping fluid selected so that
two thin lenses with a focal length of magnitude 150 cm the first diverging and the second converging are located 113