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A 40kg child slides down a frictionless playground slide, starting from rest at a height of 2.2 m. He leaves the bottom of the slide moving horizontally at some velocity(v1). He then immediately lands on a wagon (25kg) which rolls off with the child with velocity (v2). Rolling friction is .07 with the ground. The child's velocity is calculated to be 6.56 m/s and the child and wagon's velocity together is calculated to be 4.04 m/s. What is the distance the two roll to before stopping?
The drawing shows one horizontal wire with the current going up and one vertical wire with the current going to the right. Point A is dH to the right and dV above the intersection. Point B is dH to the left and dV below the intersection.
Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99*10^30 kg), and the orbital radius of Neptune of 3.00*10^1A.U
A magician wishes to create the illusion of a 2.17-m-tall elephant. He plans to do this by forming a virtual image of a 57.0 cm tall model elephant with the help of a spherical mirror. what radius of curvature is needed
A cylindrical storage tank has a radius of 1.43 m. When filled to a height of 3.60 m, What is the density of the solvent
Two radio antennas are separated by 2.00 m. Both broadcast identical 750MHz waves. If you walk around the antennas in a circle of radius 10.00 m, how many maxima will you detect.
A 1 200-N uniform boom at f 5 65° to the horizon- tal is supported by a cable at an angle u 5 25.0° to the horizontal, calculate the tension in the support cable
The left end of a long glass rod 8.00 in diameter, with an index of refraction 1.60, is ground to a concave hemispherical surface with radius 4.00. What is the index of refraction of the liquid
A typical compact disc stores information in tiny pits on the disc's surface. What's the frequency of electromagnetic waves that have a wavelength equal to the typical CD pit size
A 1,220-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 8,800-kg truck moving in the same direction at 20.0 m/s, What is the velocity of the truck right after the collision
The following three forces act simultaneously on the same object. A = 300 N, 300 N of E; B = 600 N, 2700; and C = 100 N due east. Find the resultant force using the polygon method
An expensive grand piano has been pushed to the top of the ramp 1.77 m high inclined at 28.90 degrees at the back of a moving van. How long will it take the piano to reach the bottom of the ramp
The centripital force of 45N is required to resolve a stone of mass 100g along a circular path of radius 50cm. Find the constant speed of the stone
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