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A 40-kg firl and an 8.4-kg sled are on the surface of a frozen lake, 15 m apart. By means of a rope the girl exerts a 5.2-N force on the sled, pulling it toward her.
(a) What is the acceleration of the sled?
(b) what is the acceleration of the girl?
(c) How far from the girl's intial position do they meet, assuming the force to remain constant? Assume that no frictional forces act.
Assume that 36% of the body of a person floating in the Dead Sea will be above the water line, Find the density of the water in the Dead Sea
Find the maximum altitude reached by the rocket.Find its total time of flight.
A 1600kg car takes a 50-m-radius unbanked curve at 17m/s, What is the size of the friction force on the car
Draw the field lines for two infinitely long wires one running along the y axis and one running along the x axis, both charged uniformly with lambda C/m. Make an expression for the electric field E at any point in the xy plane in terms of x and y...
A parallel-plate air-filled capacitor having area 44.0 cm2 and plate spacing 2.80 mm is charged to a potential difference of 620. V.
A parallel-plate air capacitor has a capacitance of 500 pF and a charge of magnitude 0.150 mu C on each plate. What is the surface charge density on each plate
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
Find out the intensity if the frequency is increased to 2.90 kHz while constant displacement amplitude is maintained.
John can hit a golf ball 310m on earth. on the moon's surface, g=1/6 gravity of earth, so how far could he hit the same ball if he could only achieve half an initial velocity achieved on earth.
a thin rod of length 10.3m and mass 20kg is supported at a 30 degree incline. one support is 2.4m and the other is 8.3m from the lower end of the rod, Find the normal force exerted on the rod by the upper support answer in units of N
What is the volume of the bubble when it reaches just below the surface of the lake, where temperature is 20°C.
What is the wavelength of the waves produced on the wire.
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