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Water is flowing through a pipe (area 4.2 cm2) that connects to a faucet adjusted to have an opening of 0.48 cm2. If the water is flowing at a speed of 5.5 m/s in the pipe, what is its speed as it leaves the faucet?
the horizontal and the chair slides along the floor. Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
A 43.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 346 N. Find the child's speed at the lowest point
Decide about the validity of Ampere's Law. Ampere's Law is valid.
A test charge of +2*10^-7 C is located 5cm to the right of a charge +1*10^-6 C and 10 cm to the left of a charge -1*10^-6 C. The three charges lie on a straight line
A thin film of glass (n = 1.48) floats on a liquid of n = 1.35 and is illuminated by light of ? = 600 nm incident from air above it. Find the minimum thickness of the glass
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
A tiger leaps horizontally from a 6.5 m high rock with a speed of 4.1 m/s. How far from the base of the rock will she land
a 5 kg mass is attached to the end of a 1.0-m string. The system is whirled in a horizontal circular path. What is the maximum speed of the mass if the string is not to break
Three balls A, B, and C, with masses of 2.7 kg, 1.1 kg, and 1.2 kg, respectively, are connected by massless rods, find the acceleration of the center of mass of the three-ball system
A wooden raft has a mass of 69 kg. When empty it floats in water (density 1000 kg/m3) with 25% of its volume submerged. What mass of sand can be put on the raft
The temperature of 2.10 kg of water is 34 °C. To cool the water, ice at 0 °C is added to it. The desired final temperature of the water is 11 °C, determine how much mass m of ice should be added.
What frequency will hear after the train passes
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