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1. What is the significance of a zero vector?
2. Can the dot product be negative? If yes, what must be the condition?
3. Can you reason why the dot product of two vectors is known as the scalar product?
A girl of m1=60 kg springs from a trampoline with an initial upward velocity of Vi=8.0 m/s. what is the speed of the girl immediately before she grabs the box
A jet plane traveling 1840 kilometer per hour (511 m/s) pulls out of a dive by moving in an arc of radius 5.40 kilometer, determine what is the planes acceleration
A 60.0-kg runner expends 300 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
tall corporation purchased 75 percent of light corporations voting common stock on january 1 20x2 at an amount equal to
The speed of a bobsled is increasing because it has an acceleration of 2.1 m/s2. At a given instantin time, the forces resisting the motion, including kineticfriction and air resistance, total 450 N. The mass of the bobsledand its riders is 240 kg.
Sound 1 has an intensity of 35.0 W/m^2. Sound 2 has an intensity level that is 2.7 dB greater than the intensity level of sound 1
High-speed photos of a 220 microg flea jumping vertically indicate that the jump lasts 1.2 ms, What is the flea's change in momentum during its jump
A 8 g bullet has a speed of 180 m/s and embeds itself into a 500 g block. What is the speed of the block after the collision
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
Suppose a block of mass M is sliding down an inclined plane which makes an angle t with the horizontal. What is the work done by friction as the block travels a distance d along the plane
A beam of red laser light (? = 633 nm) hits a black wall andis fully absorbed. If this exerts a total force of F = 5.5 nNon the wall, how many photons per second are hitting the wall
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 19.0 days on average to complete one nearly circular revolution around the unnamed planet.
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