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Three vectors , , and each have a magnitude of 52 m and lie inan xy plane. Their directions relative to the positive direction of the x axis are 30°, 193°, and318°, respectively. What are (a) the magnitude and (b) the angle of the vector + + , and (c) the magnitude and (d) the angleof - + ? What are (e) the magnitude ?
For a double-slit experiment, the inside edges of two 1.73-mm wide slits are separated by a distance of 1.35 mm. find the separation of the bright fringes on the screen
an empty rubber balloon has a mass of 0.0115 kg. the balloon is filled with helium at a density of 0.181 kgm3. at this
ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to retrieve the ball, How far did the car move while breaking
A 100 kg block is pulled at a constant speed of 6.2 m/s across a horizontal floor by an applied force of 123 N directed 27° above the horizontal. obtain the rate at which the force does work on the block
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountain, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the easter..
A horizontal 792-N merry-go-round is a solid disk of radius 1.43 m, Find the kinetic energy of the disk after 2.92 s
A kangaroo can jump over an object 2.70 m high. Calculate its vertical speed when it leaves the ground
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, meaning that much charge can be delivered at approximately 1.5 V.) what must the area of each plate be
A ferries wheel with radius 20 m which rotates counterclockwise, is just starting up. Find the magnitude of the passenger's acceleration at the instant
an electron is accelerated by a constant electric field of magnitude 305 nc.a find the acceleration of the electron.b
an automobile tire has a gauge pressure of 200 kpa cold. after being driven on a hot day the gauge pressure rises to
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