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Displacement d1 is in the yz plane 58.4° from the positive direction of the y axis, has a positive z component of 5.99 m. Displacement d2 is in the xz plane 27.6o from the positive direction of the x axis, has a positive z component, and has magnitude 1.86 m. What are:
i) d1• d2
ii) d1× d2 ( x, y and z components)
iii) the angle between d1 and d2
What is the horizontal distance between elbow and the point where the weight of the forearm acts.
Vector A~ has a magnitude of 9 and points in the positive x-direction. Vector B~ has a magnitude of 19 and makes an angle of 38? with the positive x-axis
An ideal spring of negligible mass is 13.00 long when nothing is attached to it. When you hang a 3.00- weight from it, you measure its length to be 14.50 .If you wanted to store 10.0 of potential energy in this spring, what would be its total leng..
In a second training exercise, the centrifuge speeds up from rest with a constant angular acceleration. When the centrifuge reaches an angular speed of 2.50 rad/s.
What would be the final temperature of 100g of 16°C water when 107 g of 40°C iron nails are submerged in it? (The specific heat of iron is 0.12 cal/g °C. Here you must equate the heat gained by the water to the heat lost by the nails.)
An archer shoots an arrow horizontally at a target 17m away. The arrow is aimed straight at the center of the target, but it hits 59cm lower.
Find out the final speeds of the two objects. What is the angle at which the object with mass 3m is scattered?
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
A stationary radar operator determines that a ship is 17 km south of him. An hour later the same ship is 21 km southeast. If the ship moved at constant speed and always in the similar direction, what was its velocity during this time.
The coefficient of kinetic friction between the rock and the surface is 0.300. Illustrate what average thermal power is produced as the rock stops?
A 125 g wire is held under a tension of 218 N with one end at x = 0 and the other at x = 12.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 12.0 m. At time t = 25.5 ms, pulse 2 is sent along the wire from the end at x = 0. A..
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