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True or false:(a) If the electric field is zero in some region of space, the electric potential must also be zero in that region. true false(b) If the electric potential is zero in some region of space, the electric field must also be zero in that region. true false(c) If the electric potential is zero at a point, the electric field must also be zero at that point. true false(d) Electric field lines always point toward regions of lower potential. true false(e) The value of the electric potential can be chosen to be zero at any convenient point. true false(f) In electrostatics, the surface of a conductor is an equipotential surface. true false(g) Dielectric breakdown occurs in air when the potential is 3 times 106 V. true false
A certain gyroscope consists of uniform disk with a 50 cm radius mounted at the center of an axle that is 11 cm long and of negligible mass. what is the precession rate
A wave has a wavelength of 456m and a frequency of 200Hz. What is the period of the wave? What is the wave speed?
A startled armadillo leaps upward, rising 0.575 m in the first 0.195 s. What is its initial speed as it leaves the ground
A singly charged positive ion has a mass of 2.53 10-26 kg. After being accelerated through a potential difference of 238 V, Calculate the radius of the path of the ion in the field
Suppose you carry a bag of groceries weighing 100 N from your car to your kitchen, a distance of 61 m, without raising or lowering the bag
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, Determine the cheetah's average acceleration during the short sprint
Four identical charges (+2.2 %u03BCC each) are brought from infinity, Determine the electric potential energy of this group
A certain string can withstand a maximum tension of 31 N without breaking. A child ties a 0.33 kg stone to one end and, holding the other end, What is the speed of the stone as the string breaks
An instructor wants to use a lens to project a real image of a light bulb onto a screen 2.27 m from the bulb. what focal length lens will be needed
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
Graphically determine the resultant of the following three vector displacements: (1) 24 m, 36? north of east; (2) 18 m, 37? east of north; Determine the resultant direction
An AC adapter for a telephone-answering unit uses a transformer to reduce the line voltage of 120 V (rms) to a voltage of 10.0 V. What is the rms power delivered to the transformer
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