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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
An athlete runs 400m, which is exactly one loop on an Olympic stadium, making consecutive 100m distances in: 10.1, 10.3, 10.2 and 10.0s
A 2.25kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.6N is required to hold the mass at rest when it is pulled 0.215m from its equilibrium position, Calculate the total energy of the oscillating..
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
A charged particle moves through a velocity selector at a constant speed in a straight line, Calculate the charge-to-mass ratio of the particle.
When on the ground, Ian's weight is measured to be 646 N. When Ian is on an elevator, his apparent weight is 743 N. What is the net force on the system
A 10.0-kW laser with a beam area of 10.0 cm2 is incident normally on a mirror. Assuming perfect reflection, what is the force due to radiation pressure on the mirror
What is the time constant of a 9.50 thick membrane surrounding a 4.0×10-2 diameter spherical cell? Suppose the resistivity of the cell membrane as and the dielectric constant is approximately 9.00.
A jet airplane is in level flight. The mass of the airplane is m = 8990 kg. What is the magnitude of the lift force acting on the plane
You sled down a hill of 45-m vertical height. The combined mass of you and your sled is 130kg. How much work was doen against friction during your decent
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
q1. a 3.20 box that is several hundred meters above the surface of the earth is suspended from the end of a short
If there is turbulence inside the pipe, then the required pressure to force the water through is significantly higher, so this is to be avoided.
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