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Two in?nite plates of surface charge are separated by distance d. One plane has surface charge density +σ, and the other has surface charge density -σ. I would like ot know what is the p
A series RLC circuit with L = 15 mH, C = 3.1 F, and R = 4.7 is driven by a generator with a maximum emf of 120 V and a variable angular frequency 8700. Find phase angle (in degrees).
A bird sitting in a tree is traveling at 30 km/s relative to the faraway Sun. When the bird drops to the ground below, does it still go 30 km/s, or does this speed become zero?
What must the charge (sign and magnitude) of a 1.55 particle be for it to remain balanced against gravity when placed in a downward-directed electric field of magnitude 680?
Whats the difference between prokaryotes and eukaryotes; mode of reproduction, number of chromosomes, and shape of bacterial chromosome?
In any sensory system (sound, light, chemical), the lower limit of detection is often determined by the "background' noise level" of the sensory system. One could think of this as signals that are gen
A cannonball shot with an initial velocity of 143 m/s at an angle of 56° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is the can
When the power switch is turned off, you observe that the wheel stops in 45.0 s with constant angular acceleration due to friction at the axle. What torque does friction exert while this wheel is sl
A soccer player 'heads' a size 5 ball deflecting it by 46.0°, and keeps its speed of 15.90 m/s constant. A size 5 ball has a mass of approximately 0.421 kg. What is the magnitude of the impulse
How are the frequencies of various modes (n=1 is the first mode, n=2 is the second) related? The answer should be of the form fn="something" with an f1 in it.
Your brother has just purchased a new plastic model airplane. He places all the parts on the table in approximately the positions in which they will be located when the model is complete. His actions
A length of wire has a resistance of 800 omega. The wire is cut into N identical pieces which are then connected in parallel. The resistance of the parallel arrangement is 16.32 omega. Find N.
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was done by friction on Megan?
On the Wheel of Fortune game show, a solid wheel (of radius 7 m and mass 10 kg) is given an initial counterclockwise angular velocity of +1.26 rad/s. It then comes to rest after rotating through 3/
An aqueous solution when the [OH-] is 5.2 x 10-9 M?
A single household circuit operates at 120 V and is protected by a 20 A circuit breaker. How many 30 W lamps can be operated simultaneously without tripping the circuit breaker?
A banked circular highway curve is designed for traffic moving at 66 km/h. The radius of the curve is 207 m. Traffic is moving along the highway at 49 km/h on a rainy day. What is the minimum coeff
How does the cellular structure of Giardia allow it to cause disease in other organisms? What is Giardia's cellular structure?
Calculate the surface area to volume ratio of a a cube whose sides are 100 um in length to approximate the surface area to volume ratio of the fern spore cell
A ranger in a national park is driving at 54 km/h when a deer jumps onto the road 61 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration o
A particular organ pipe can resonate at 231 Hz, 385 Hz, and 539 Hz, but not at any other frequencies in between. Is it an open or a closed pipe?
A 0.507-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 15.1 N/m. The block rests on a frictionless surface. A 0.0500 kg wad of putty is t
Assuming independent assortment for all gene pairs, what is the probability that the following parent AaBbCc will produce a gamete of ABC
The mass of the resistor is 57. How much does the temperature of the carbon increase if the wire is pulled for 10 ? The specific heat of carbon is 710.
Find average energy of system as function of temperature and entropy of system.