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Q. How much work must be completed to accelerate a baton from rest to an angular speed of 7.79 rad/s about its center? Consider the baton to be a uniform rod of length 0.596m and mass 0.495kg.
Q. A butterfly at eye level is 23 cm in front of an plane mirror. You are behind the butterfly, 51 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?
A dog trots 3.6 meters east and 5.0 meters north. What are the magnitude and direction of the dog's displacement with respect to the original position.
To water the yard you use a hose with a radius of 3.50 cm. Water flows from the hose with a speed of 1.10 m/s. If you in part block the end of the hose so the effective radius is now 0.55-cm, with what speed does water spray from the hose.
When light with a wavelength of 206 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 2.57 x 10-19 J. find the wavelength (in nm) of light that should be used to double the maximum kinetic energy of ..
A daredevil is shot out of a cannon at 43 degrees to the horizontal with an initial seed of 25m/s. A net is positioned at a horizontal distance of of 50m from the cannon from which it is shot. At what height above cannon should the net be placed i..
A skier, weighing 453 n, is skiing down a slope that has an incline of 29 degrees above the horizontal. Compute the acceleration of the skier (coefficient of kinetic friction between the skis and snow is 0.21)
A diver 50 m deep in 10 degrees Celsius fresh water exhales a 1.2 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 35 degrees Celsius? Suppose that the air bubble is always i..
A worker stands still on a roof sloped at an angle of 21° above the horizontal. He is prevented from slipping by a static frictional force of 400 N. Find out the mass of the worker.
A 74 trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0 m/s. How can I find how much he depresses it if there is a spring constant of 6.2*10^4.
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
Calculate the force required to move an object.
Assuming that the total retarding force on the diver is constant at 55.0 N with the parachute closed and constant at 3600 N with the parachute open, what is speed of the diver while he lands on the ground.
The light ray makes an angle of α = 32.1° with the normal line at the boundary of linseed oil and water. find the angles θ1 and θ2. Note that n = 1.48 for linseed oil.
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