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A circular conducting ring is split into two semi-circles. The top half has a positive charge (Q) evenly distributed, and the bottom half has a negative charge (-Q), also evenly distributed. In which direction is the electric field exactly in the center of the ring?
1) upward2) to the right3) downward4) to the left5) The electric field is zero in the center of the ring.
A block with mass m = 7.0 kg is attached to two springs with spring constants kleft = 37.0 N/m and kright = 48.0 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitud..
At 28.0 m below the surface of the sea (density = 1 025 kg/m3), where the temperature is 5.00°C, obtain the volume of the bubble just before it breaks the surface
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.00 10-28 kg, what is the speed of the heavier fragment
A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of ? = 55..
In the AC circuit shown in Figure P33.5, R = 70.0 ohms and the output voltage of the AC source is Vmax*sin(wt). (a) If VR = .250*Vmax for the first time at t = .010 s, what is the angular frequency of the source? (b) What is the next value of t for w..
A person can see clearly up close, but cannot focus on objects beyond 82.0cm . She opts for contact lenses to correct her vision. Is she nearsighted or farsighted
How far from a point on the floor directly below the edge. Why is it a good idea to have your hand extended forward when you are getting ready to catch the fast moving baseball with your bare hand.
The electric field intensity between two parallel plates separated by 25mm is 8000 N/C. How much work is done by the electric field in moving a -2uC charge from the negative plate to the positive plate?
An electric field of 16000 N/C is directed along the positive x-axis. What is the electric force on an electron in this field
How much energy is required to move a600kg object from the Earth's surface to an altitude twice the Earth's radius
A man applies a force of F = 3.00 102 N at an angle of 60.0° to a door, x = 1.90 m from the hinges. Find the torque on the door
A 76 g, 31 cm long road hang vertically on frictionless horizontal axle passing through its center a 10 gram ball of clay travelling horizontally at 2.6m/s hits and stick to the very bottom tip of the rod. To what maximum angle, measured from ..
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