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A spark plug in an automobile engine consists of two metal conductors that are separated by a distance of 0.63 mm. When an electric spark jumps among them, the magnitude of the electric field is 4.65*107 V/m. What is the magnitude of the potential dissimilarity ΔV between the conductors?
A 35.0-g bullet moving at 475 m/s strikes a 3.2-kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 225 m/s. How fast is the bag moving while the bullet exits.
A light bulb is connected to a 240 Vwall socket. The current in the bulb depends on the time t according to the relation I = (2.121 A) sin[ (439.6Hz) t ]. What is the resistance of the bulb's filament?
A large capacitance of 2.00 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
A box is pushed across the floor against a constant frictional force. The box is pushed across the room to the east in 30 seconds and returned to its starting point (pushed to the west) in 60 seconds.
An empty storage tank has a volume of 135 ft3. What is the buoyant force exerted on it by the air
A projectile launched vertically from the surface of the Moon rises to an altitude of 316 km. What was the projectile's initial speed
A vinyl record plays at 33.3 rpm. Assume it takes 9 s for it to reach this full speed, starting from rest. What is its angular acceleration during the 9 s?
Planet X rotates in the same manner as the earth, around an axis through its north and south poles, and is perfectly spherical. How long is the day on Planet X
A bat can detect very small objects, such as an insect whose length is approximately equal to one wavelenth of the sound the bat makes. what is the smallest insect the bat can detect
A mountain climber jumps a 2.4 -wide crevasse by leaping horizontally with a speed of 7.2. find the height difference between the two sides of the crevasse
Draw a careful diagram of the set up of the reference point method of finding an image. explain how you found the object and image distances
With its double helix structure, DNA is coiled like a spring. A biophysicist grabs the end of a DNA strand with optical tweezers, What's the DNA spring constant
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