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A pump is required to lift 20 kilogram of water per minute through a height of 4.00 meter. Find what output power rating in watts should the pump motor have?
a parallel-plate capacitor has plates with area 0.0105 m2 separated by 1.00 mm of teflon.a calculate the charge on the
Light with ? = 760 nm is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at ? =3°. What is the width of the slit
You have a 1200W microwave. When you put a cup of water in for 8 minutes only half evaporates. How efficient is your microwave
a muon with half-life 1.52 micro secondsin its own frame travels 60 km. what is that distance in the frame of the muon
A converging lens (f = 14.9 cm) is located 24.6 cm to the left of a diverging lens (f = -7.07 cm). Locate the final image of the stamp relative to the diverging lens
A window washer pushes his scrub brush up a vertical window at constant speed by applying a force as shown in the figure below.The brush weighs 12.7 N, θ =54.5° and the coefficient of kinetic friction isμk = 0.154.
A spring is hanging from the ceiling. Attaching a 700 physics book to the spring causes it to stretch 27 in order to come to equilibrium. Spring constant 25 N/m: -From equilibrium, the book is pulled down 10cm and released. What is the period of osci..
A satellite in Earth orbit has a mass of 102 kg and is at an altitude of 2.10 106 m. (Assume that U = 0 as r ? ?.), What is the potential energy of the satellite-Earth system
A magnetized sewing needle has a magnetic moment of 11.04 mA · m2. How much work must be done on the system to move the needle from the minimum to the maximum potential energy orientation
As part of a safety investigation, two 1900 cars traveling at 25 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
After a golf ball is hit it takes off with an initial speed of 26.2 m/s and at an angle of 39.5° with respect to the horizontal. The golf field is flat and horizontal.
Consider three point charges located at the corners (points 1, 2, and 3) of a right triangle with sides "a", where q1 is located at corner 1, q2 at corner 2, and q3 at corner 3, Find the resultant force exerted on q3
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