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A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.50 x 10^-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force vector F of magnitude 2.00 N is exerted on the plunger, making medicine squirt from the needle. Determine the medicine's flow speed through the needle. Assume the pressure in the needle remains equal to 1.00 atm and that the syringe is horizontal
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm above the ground, and it compresses by 50cm as he comes to rest.
Two small objects are connected by a string of length l and are initially positioned at rest on a horizontal plane. Charge of each object is q, mass is m. String is broken and objects start to slide away from each other on the horizontal plane. What ..
A camera has a lens with a focal length of 24.9 cm. how far from the film should the lens be placed
A 97.0-kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 12.0 m. The jumper reaches reaches the bottom of her motion 36.0 m below the bridge before bouncing back. We w..
A car drives over a hilltop that has a radius of curvature 120 m at the top of the hill with a speed of 20.0m/s. What is the normal force felt by the car tires
A Carnot engine has 40 g of helium gas as its working substance. It operates between two reservoirs of temperatures T1 = 400°C and T2 = 60°C. find the work generated by this engine during one cycle
A small boat is headed for a harbor 30 km directly northwest of its current position when it is suddenly engulfed in heavy fog. The captain maintains a compass bearing of northwest and a speed of 9.8 km/h relative to the water. The fog lifts 3.0 h..
Ocean waves (on a particularly nice summer day) move past at 1.8 waves/s. find the speed of the waves
A goalkeeper kicks a ball of mass 400 g in the air, which reaches a position of height 15.9 m above the ground corresponding to a horizontal distance 19.7 m from its initial position. What is the total work done on the ball
A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. It has a mass of 213 g. When placed in water, the block sinks. What volume of water did it displace.
Consider a series RLC circuit where R = 345 ? and C = 2.25 ?F. However, the inductance L of the inductor is unknown. What is the inductance of the inductor in millihenrys
A 50,000 kg locomotive is traveling at 50.0m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
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