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a boy throws a rock with a rock with an initial velocity of 2m/s at 30 degree above the horizontal. how long does it take for the rock to reach the maximum height of its trajectory?
A man does 4,335 J of work in the process of pushing his 2.80 103 kg truck from rest to a speed of v, over a distance of 27.5 m. determine the horizontal force exerted on the truck
A block is given an initial velocity of 5 m/s up a frictionless 20 ° incline. How far up the incline does the block slide before coming (momentarily) to rest.
A 6 ornament is hanging by a 1.30 wire when it is suddenly hit by a 3.00 missile travelling horizontally at 10.0. The missile embeds itself in the ornament throughout the collision.
A centrifuge in a medical laboratory is switched on and rotates through 3900 revolutions. determine the final angular speed of the centrifuge
Your friend has a near point of 129 cm, How close can she hold a magazine and still read it clearly
Sunlight shines directly on to the wall of a large soap bubble (n = 1.33) which is floating in air (n=1). What is the minimum thickness it could have to produce completely destructive interference for blue light (%u03BB = 475 nm)
what is the thermal kinetic energy in 1kg of oxygen gas at 20 degrees celsius? What fraction of this energy is translational
A 4 g bullet has a speed of 250 m/s and embeds itself into a450 g block. How far does the block slide after the collision before coming to rest
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
A train is travelling up a 4.40 incline at a speed of 3.30 when the last car breaks free and begins to coast without friction. How long does it take for the car to come to rest? How far does the car travel.
A uniform electric field has a magnitude 330 N/C and is directed along the +y-axis. what is the change in potential energy for this charge
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
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