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Q. A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area of 2.5 x10-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force F of magnitude 2 N is exerted on the plunger, making medicine squirt from needle. Resolve the medicine's velocity as it exits the needle. Assume that the pressure in the needle remains equal to 1 atm and that the syringe is horizontal. I got an answer of 12.60 m/s and was wondering if it was correct.
A boy shoots a BB gun horizontally at a target 15 m away. The gun is aimed directly at the center of the target, but the small metal BB hits 56 cm lower. avoid any air resistance, what was the initial speed of the BB.
An air puck of mass 0.029 kg is tied to the string and allowed to revolve in a circle of radius 2.0m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of surface, and a mass of 2.6 kg is tied to it...
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground as he slows down.
A brick is thrown vertically upward with an initial speed of 4.90 m/s from the roof of a building. If the building is 98 m tall, how much time passes before brick lands on the ground.
approsimate the terminal speed of a wooden sphere (density 0.890 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.)
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
You and a friend each drive 67 km. You travel at 88.1 km/h, your friend at 952.6 km/h. How long would your friend wait for you at the end of the trip.
A flight attendant pulls her 73 N flight bag a distance of 245 m along a level airport floor at a constant velocity. The force she exerts is 45 N at an angle of 54° above the horizontal.
determine the value of IG. The support at B does not move while the measurement is taken. For the calculation, the horizontal location of G should be determined.
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
The speakers produce the same single-frequency tone in either drawing and are in phase. The speed of sound is 343 m/s. Find the single smallest frequency that would produce both constructive interference in drawing 1 and destructive interference in d..
If the distance between two slits is 0.031 mm and the distance to a screen is 2.50 m, find the spacing between the first- and second-order bright fringes for yellow light of 500 nm wavelength.
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