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A positive charge of 5.00 oC is fixed in place. From a distance of 3.40 cm a particle of mass 6.50 g and charge +3.50 oC is fired with an initial speed of 72.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and starts traveling away?
Estimate the area of the plates needed to achieve a capacitance of 1 F, given the same air gap, What is the electric field between the plates
A person throws a rock straight up into the air. At the moment itleaves the person's hand it is going 33mph. When the rock reaches its peak, how fast is it going and whatis the magnitude and direction of its acceleration?
A stone thrown horizontally from a height of 5.87 m hits the ground at a distance of 13.90 m. Calculate the initial speed of the stone
The space between the plates of a capacitor is filled with water. By what factor does the water change the capacitance relative to that found when the plates are filled with air?
An electron is released from rest in an electric field of 2.13 x 10-10 N/C pointing to the right. After the electron has traveled a distance of 1.2 micrometers, what is its velocity?
The coefficients of static and kinetic friction between a 524crate and the warehouse floor are 0.665 and 0.320, respectively. find the acceleration of the crate after it has begun to move
In the figure above the mass to the spring is 0.2 kg. The spring's constant is 60 N/m. The mass is stretched to a position of 0.5 m and released. What is the work done by the spring
A 1.23-kg box slides up an incline plane with a speed of 8.6 m/s. If the angle of the plane with respect to the horizontal is 11 degrees, how long will it take for the box to come to rest
q1. a car carrying a 77-kg test dummy crashed into a wall at 27ms and is brought to rest in 0.1 s. demonstrate that the
The output voltage of an AC generator is given by ?v = (120 V) sin (80?t). The generator is connected across a 21.0-? resistor. Find the maximum current in the resistor
Electrons are ejected from a metallic surface with speeds ranging up to 4.60 × 105 m/s when light with a wavelength of 625 nm is used. a)What is the work function of the surface? b) What is the cutoff frequency for this surface?
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 24.0 s. How tall is the tower
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