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Show transcribed image text Assuming you have 6.24 x 10^14 electrons and the surface area of the pail is 0.2 m^2, what is the charge density (C/m^2)?
A bat at flying east at 30 m/s sends out ultrasonic waves at 60kHz and receives them returned from an object moving east at 35.0 m/s, What is the sound frequency of the reflected wave as heard by bat
two 10-cm-diameter charged disks face each other 21 cm apart. both disks are charged to - 70 nc.the electric field
Problem 1 The 2-kg slider A is pushed along the curved bar by the slotted bar. The curved bar lies in the horizontal plane, and its profile is described by r = (0/7c + 1.5), where 0 is in radians and r is in meters. The angular position of the slo..
An object is placed 12 cm in front of a concave mirror whose focallength is 23 cm. The object is 3.6 cm tall. Determine (a) the location of the image,taking a real image as a positive value and a virtual image as anegative value.
A gas of 1.50×10^20 atoms or molecules has 0.900 J of thermal energy. evaluate the temperature of the gas
Two small stereo speakers are 2.8 m apart and act as a double-slit interference experiment with sound waves. If the opposite wall of the room is 7.5 m away and the sound frequency is 1.4 kHz, what is the distance among the two interference maxima nea..
The horizontal and vertical components of the initial velocity of a football are 20m/s and 30m/s respectively. What horizontal distance does the football travel during flight
The density of liquid water at the boiling point (100 degrees Celsius) is 958 kg m-3. By what factor does the volume of the water increase
A negative charge moves in the direction of a uniform electric field. Does the charge move to a position of higher or lower potential
An unknown tuning fork produces a beat frequency of 3Hz when played with a 440Hz fork, What is the frequency of the unknown fork
An electric heater is rated at 1300 W, a toaster is rated at 1150W, and an electric grill is rated at 1530 W. The three appliancesare connected in parallel to a common 123 V circuit.
What is the reading of spring scale
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