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a box of mass m1= 5 kg. rests on a smooth horizontal floor next to a box mass m2= 10 kg. if you push the smaller box with a force of 20 N, what is the acceleration of the boxes? What is the horizontal force exerted on by m1 by m2?
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. determine the total kinetic energy of the automobile
A mass of 3kg, is sitting on a 34° incline and is connected by a massless string over a pulley in the shape of a hollow cylinder, estimate the acceleration of the system
From the top of a 40.0m high cliff, two rocks are simultaneously thrown. One is thrown upwards at 20.0m/s, the other is thrown downwards at 8.0 m/s. How far apart are the two rocks after 1.5 seconds?
define the speed with which the cart reaches positions 3, 2, and 1 (in that order). Neglect friction. Let g = 9.81 m/s2.
You have three identical charged spheres, each with a charge of 4.10 µC. Find the magnitude of the electric field at the "empty" corner
A jetliner is moving at a speed of 216 m/s. The vertical component of the plane's velocity is 79.70 m/s. establishes the magnitude of the horizontal component of the plane's velocity.
A slide projector needs to create a 96 cm-high image of a 2.20 cm-tall slide. How far should you place the lens from the slide.
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. what is the final temperature of the coffee
Suppose a distant world with surface gravity of 5.28 m/s2 has an atmospheric pressure of 7.16 multiply.gif 104 Pa at the surface. Calculate the pressure at a depth of 10.0 m in the methane ocean
Problem 12.30: Singing in the shower. We all sound like great singers in the shower, due to standing waves, What are the wavelengths of the first two overtones for this shower
The archerfish successfully shoots down the resting insect by spitting water drops at the same angle 60^circ above the surface and with the same initial speed v as before. At what height h above the surface was the insect.
A shopper pushes a cart 50 m south down one aisle and then turns 90° west and moves 28 m. He then makes another 90° turn and moves 11 m.
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