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Two 10 cm-diameter charged disks face each other, 29cm apart. The left disk is charged to - 50 nC and the right disk is charged to + 50 nC . What is the electric field E, both magnitude and direction, at the midpoint between the two disks? What is the force F on a -1.1nC charge placed at the midpoint?
The wind exerts a force of 325N north on a sailboat, while the water exerts a force of 425 N west on the sailboat. Find out the magnitude and direction of the net force on sailboat.
A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. find the horizontal component of initial velocity
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
q1. a 1000kg experimental rocket sled at rest on level frictionless rails is loaded with 50kg of propellant. it
The average speed of the atoms in a 3.9 g sample of helium gas is 607 m/s. Estimate the thermal energy of the sample
A house is 50.0 ft long and28.0 ft wide, and has 8.0 ft highceilings. What is the volume of the interior of the house in cubicmeters and in cubic centimeters?
A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the r..
A box with a total surface area of 1.11 m2 and a wall thickness of 3.1 cm is made of an insulating material. A 12.9 W electric heater inside the box maintains the inside temperature at 16.3C above the outside temperature. Find the thermal conductivit..
A 1 200-N uniform boom at f 5 65° to the horizon- tal is supported by a cable at an angle u 5 25.0° to the horizontal, calculate the tension in the support cable
An electric field in some region goes as E=15x^2 i N/C. Determine the charge in potential as you move from the orgin to point (2,2,9) m
A 1000 kg sports car accelerates from rest to 25.0m/s in 7.5s. What is the average power output of the automobile engine
A wooden block floating in seawater has half of its volume submerged. When the block is placed in mineral oil, 93% of its volume is submerged.
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