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How much energy is required to place four positive charges, each of magnitude +5.0 mc, at the vertices of a square of side 2.5 cm? Choose one way of assembling the charges and com1pute the potential at each empty vertex as this set of charges is assembled. Be sure to clearly explain the order of assembly.
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet and by the star on this object is zero. DATA: Mstar= 1.90E+30 kg, Mplanet= 6.90E+25 kg, Dpla..
You propose a new temperature scale with temperatures given in ?M. You define 0.0 ?M to be the normal melting point of mercury, What is the normal boiling point of water
A child in a boat throws a 6.0 kg package out horizontally with a speed of 10m/s. Compute the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 29kg and that of the boat is 55.0 kg. Overlook water ..
In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 2.50 m/s at an angle of 15.5° above the horizontal. It is released 0.73 m above the floor. What horizontal distance does the ball cover ..
water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. what is the net charge of all these electrons
A homogeneous cylinder of radius 24.0cm and mass 40.0kg is rolling without slipping along a horizontal floor at 8.30m/s. How much work is needed to stop the cylinder
What is the electric potential energy of three equal positive charges of 1.33 µC while they are arranged to form a triangle 2.10 x 10-3 m on a side.
When a 0.2 kg mass is suspended from a vertically hanging spring it stretches the spring from its original length of 0.5 cm to a total length of 6.0 cm. what is the maximum speed of the mass as it oscillates
An 800-N billboard worker stands on a 4.0-m scaffold supported byvertical ropes at each end. what is the tension in the ropenearest the worker
A softball player hits the ball and starts running toward first base. Utilize the particle model to draw a motion diagram showing her position and her average velocity vectors through the first few seconds of her run.
A loop of wire with cross-sectional area 1 m2 is inserted into a uniform magnetic field with initial strength 2 T. Find the magnitude of the induced EMF in loop of wire
A concave makeup mirror is designed so the virtual image it produces is four times the size of the object when the distance between the object and the mirror is 11.5 cm. What is the radius of curvature of the mirror?
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