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Two parallel metal plates have area A = 255 cm2 and are separated by l = 0.50cm. They have a potential difference of 0.25 V. Find the numerical value of the electric field. What are the charge density and total charge on each plate? Draw the equipo- tential surfaces at 0.10 V and 0.20 V.
A freight train has a mass of 1.3 * 10^7 kg. how long doesit take to increase the speed of the train from rest to 90km/h
A 60 kg block is pushed 5m up a fricitonless incline to a height 1m above the ground. How much work is done by the person on the block pushing it up the incline
A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 4.1-kg block
A pendulum makes 24 oscillations in 39s. The period is 1.6 s 1. Find the pendulum's length
An object 6 cm high is placed 30 cm from a concave mirror of focal length 10 cm, Calculate size of image
A solid conducting sphere with a radius of 35.4 cm contains atotal charge of 5.46 mC, evenly distributed over its surface. What is the direction of the electric field at its surface?
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H (b) If this electron absorbs a photon and makes a transition to the 2p orbital
a guitar of bridge length l 0.76m has new strings put on it. the low e string has a linear density of p 0.08 kgm
A wooden raft has a mass of 90 kg. When empty it floats in water (density 1000 kg/m3) with 67% of its volume submerged. What mass of sand can be put on the raft without it sinking
A speeder is pulling directly away and increasing his distance from a police car that is moving at 27 m/s with respect to the ground. Find the speeder's speed with respect to the ground
In the Biomedical and Physical Sciences building at MSU there are 132 steps from the ground floor to the sixth floor. Each step is 16.6 cm tall. How many food Calories did the person burn during the walk
The satellite relays a radio signal from a transmitter near the North Pole to a receiver, also near the North Pole. Traveling at the speed of light, how long is the radio wave in transit
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