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An electron has a momentum py = 1.20 × 10-25 kg.m/s. What is the minimum uncertainty in its position that will keep the relative uncertainty in its momentum (Δpy/p) below 2.2%?
Mattwe pulls his little sister sarah in a sled on an icy surface, with a force of 60 N at an angle of 37 ° upward from the horizontal. If he pulls her a distance of 12m, then determine the work done by matthew?
a boy throws a ball upward from the top of a tower with a speed of 12ms. on the way down it just misses the thrower and
to place a communications satellite into a geosynchronous orbit at an altitude of 22240 mi above the surface of the
The size of a slide is 35 mm X 35 mm. Its image is formed on the screen 4.0 m from the lens of the projector. The focal length of the lens in the projector is 10 cm. Discover the object distance of the slide. Discover the size of the image on the scr..
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
Blake passes a parked police car at a constant speed of 29 m/s. At that instant the police car starts from rest with a uniform acceleration of 2.15 m/s2. How far in distance does Blake get before being overtaken by the police car?
The engineer of a passenger train traveling at 25 meter per second sights a freight train whose caboose is 200 meter ahead on the same track. Obtain the speed of the passenger train just before the collision
Hoover Dam was built in the 1930s to provide electricity for the southwest U.S. and to prevent the wild Colorado River from flooding. how does pressure vary with depth along the wall of the dam
A 4 kg hammer is accelerated at 4m/s^2 before striking a nail for 1.6 sec find the force of the hammer
A portable 3.5 kw wate heater is immersed for 3 minutes in a plastic filled with 20 kg of water at 20C. what will be the final temperature of the mixture given specific heat of water at 4186 j/gkC.
a 25 kg child on a 2m long swing is released from rest when the ropes of the swing make an angle of 25 degrees with the vertical, neglecting friction, find the childs speed at the lowest position
A 0.210–A current is charging a capacitor that has circular plates 15.8 cm in radius. The plate separation is 4.00 mm. What is the time rate of increase of electric field between the plates?
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