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A small ball is located at the origin and has as charge of +3.9 nC. At a distance of 5.8 cm the electric field has a magnitude of 10422 N/C. What is the direction of the electric field, away or toward the ball? B. What is the electric field magnitude at a point located at 17.4 cm from the ball? C. If you plugged new numbers into Coulomb's Law to answer part (b) you took the hard route. Consider a new situation. At a distance r1 you find an electric field of magnitude E1. What is the electric field at a point located at r2 = 3r1?
An Emergency Vehicle Siren is designed to emit an 8000 Hz sound. You hear a 9143 Hz tone as it approaches you at 40.0m/s and a 7273 Hz tone as it recedes at 32 m/s. What is the temperature of the air
A series RLC circuit is connected across a 10.0 kHz source. The 1.2 H inductor and 1000 ? resistor are fixed whereas the capacitor is variable. What average power will be dissipated
A 0.21-kg pinecone falls 15 m to the ground, where it lands with a speed of 9 m/s, How much work was done on the pine cone by air resistance
An arrow is fired horizontally with a speed of 68. m/s directly at the bulls eye of a target 50 m away. When fired, the arrow is 120-m above the ground. How far short of the target does it strike the ground.
In an experiment, light of wavelength 600 nm falls on two slits which are spaced at a distance of .5 mm. What is the distance of the slit to the screen
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
Suppose that by stirring 921 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy
how is the graph of the total volume of a bathtub while the water inflow rate follows a seesaw pattern for half of the time and the similar pattern for outflows on the other half.
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
A car is driven east for a distance of 47 km, then north for 25 km, and then in a direction 29° east of north for 29 km. find (a) magnitude (in km) of car's total displacement from its starting point and (b) the angle (from east) of the car's total..
A solid sphere is released from rest on an incline. When it reaches the bottom, what fraction of its total kinetic energy is rotational
he potential difference between two parallel conducting plates in vacuum is 410 V. What is the kinetic energy of the alpha particle
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