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When attaching a mass of 50g on a force table at 90 degrees and an unknown mass at 0 degrees, you get an equilibrant mass to have 230 g positioned at 225 degrees. How big is the unknown mass in kg? Draw a picture to show this situation in terms of vector.
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
A uniform round tube of diameter 6.32 cm has two piston tops which are balanced at exactly the same height due to a mass m on the left side, what is the pressure at the bottom of the oil filled tube if the height of the pistons is initially 27.9 cm ..
A friend advised the owner of the bowl to keep it out of direct sunlight to avoid blinding the fish, which might swim into the focal point of the parallel rays from the sun. Is the focal point actually within the bowl
Assuming that the bricks are lifted with constant speed, illustrate what is the minimum power the motor must produce?
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
An irregularly shaped piece of metal has a weight of 8.840 N. It is suspended from a scale, which reads 7.320 N when the piece is submerged in water
A light beam is incident on heavy flint glass (n=1.65) at the polarizing angle. Angle of refraction is 31.22 degrees. determine the change in the intensity
Four equal point charges of +3.0 uC are placed in air at the our corners of a square that is 40cm on a side. find the force on any one of the charges
A heart defibrillator passes 11.0 A through a patient's torso for 5.00 ms in an attempt to restore normal beating, What was the path's resistance?
a gas at p=40kpa and T= 310K hass a mass density of 8.44*10^-2kg/m3, what is the rms speed of the atoms in the gas
A parallel plate capacitor has an electric field between its two plates of 525,000 V/m. The two plates are 2.2x10-5 m apart. find the speed of the proton when it reaches the negative plate
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