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Q1. If a disco disk is rotating with a person on it on the outer side, then if he moves inside (towards the center), the angular velocity will change-How will the energy be conserved?
Q2. a. What strength of electric field does a proton produce at the distance of another proton 5.0^-15m away?
b. What strength of electric field does this proton produce at the distance of the electrons, approximately 5.0^-10m away?
The nucleus of the hydrogen atom has a radius of about 1.1 Ã- 10-15 m. find the volume of the nucleus
A block with a mass m1 = 1.5 kg is pushed by a mass m2 = 1 kg against a spring with a force constant of k = 750Nm^-1. What is the period of the motion initially
What is the magnitude of the normal force exerted by the car.
A lightweight string of length 60cm is attached to the ceiling at points separated by distance. Three objects of equal mass are hung from the string, separating the string into 4 equal segments of length L. If θ = 40, find the measure of angle φ a..
A uniform disk with a mass of 130 kg and a radius of 1.1 m rotates initially with an angular speed of 950 rev/min. How much work must this force do to stop the wheel
the distance between the slits in the two-slit experiment is 1.50 x 10^ -5 m. What is the distance on the screen between the central bright fringe and the 4th order bright fringe
Two 480g blocks of wood are 2.0 m apart on a frictionless table. A 9.0g bullet is fired at 440m/stoward the blocks. What is the speed of the second block after the bullet stops
A box stands against the wall of a cylinder that is rotating. The cylinder has a radius of 30cm. What is the minimum consant speed (magnitude of linear velocity) the box must move so it doesn't slip
If a car traveling at 66 km/h will skid 20 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
A circuit consists of two 475-k%u03A9 resistors in series with an ideal 12.0-V battery. Calculate the potential drop across one of the resistors
q1.a thrill-seeking cat with mass 4.00 kg is attached by a harness to an ideal spring of negligible mass and oscillates
Suppose that inside a motor 33 A passes through a 250 turn circular loop that is 11.5 cm in radius. What is the magnetic field strength created at its center in T
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