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Consider two vectors F~1 and F~2 with magnitudeF1 = 56 N and F2 = 66 Nand where θ1 = 294 ?and θ2 = 204 ?. The angles are measured from the positive x axis with the counter-clockwise angular direction as positive.What is the magnitude of the resultant vectorkF~ k, where F~ = F~1 + F~2 ? What is the direction of this resultant vectorF~ ? Use counterclockwise as the positive angular direction, between the limits of -180?and +180?as measured from the positive x axis.Answer in units of ?.
12 electrons are equally spaced and fixed around circle of radius 0.5 cm. Relative to V = 0 at infinity, what are the electric potential and electric field at the center C of the circle due to these electrons?
a battery with an emf of 12.00 v has an internal resistance r. when connected to a resistor r the terminal voltage is
An airplane traveling at 80.5 m/s dives at an angle of 30o below the horizontal. Determine from what height is the bomb dropped
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
Block A (5.70 kg) is resting on a smooth (no friction) horizontal surface. Find the acceleration (magnitude and direction) of block
a student with a mass of 80.0 kg runs up three flights of stairs in 12 s. the student has gone a vertical distance of 8.0 m. what is the student's power
The biochemistry that takes place inside cells depends on various elements, such as sodium, calcium and potassium that are dissolved in water as ions. These ions enter cells during narrow pores in the cell membrane known as ion channels.
An object of length 3.00 cm is inside a plastic block with index of refraction 1.40. find where is the object relative to its image
a convex spherical mirror has a focal length of magnitude 7.20 cm.a what is the location of an object for which the
A 2.60 kg container made of silver is initially at room temperature 20 Degree C. 1.45 liters of warm water is poured into this container. What is the total heat capacity of the silver container?
An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam
The gravitational potential energy U(r)of a mass mdue to a mass density ρ(r)satisfies ∇^2 U= 4πGmρ, whereGis the gravitational constant. If the earth is considered to be a uniform sphere of mass M, radius R, show that thegravitational potential en..
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