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An object with moment of inertia I1 is rotating freely (with no torque applied) with angular velocity w. Another object of moment of inertia I2 is placed on it and begins rotating with it. What is the new angular velocity of the combined system? (hint: use angular momentum conservation)
A tennis ball is shot vertically upward in an evacuated chamber with an initial speed of 20.0 m/s at time t=0. How high does the ball rise
Jack and Jill are on two different floors of their high rise office building and looking out of their respective windows. What is the height between the two window ledges
if an electron is confined to a region of size 35.2 nm, what is the minimum possible uncertainty in its momentum
A bird flies 25.0 m in the direction 55° east of south to its nest. What are the northward and westward components of the resultant displacement of the bird
A pipe has a narrow end compared to the other end. The area of the narrow section is one-half the area of the wide section. find the velocity of the water in the wider section
You want to create a spherical mirror with a focal length of +15.0 cm. Will the mirror be concave or convex
A sled is being pulled along a horizontal surface by a horizontal force of magnitude 600 N. Find the instantaneous power created by force
A rock of mass m = 1.1 kg is tied to a string of length L = 2.5 m and is twirled in a vertical circle, what is the tension when the rock is at the bottom
We pass a laser beam through a double slit. On a screen 18.52 m away, we observe a series of bright lines which are 3.4 mm apart. What is the distance between the two slits
he car is suspended beneath the helicopter by a steel cable. Illustrate what is the lift force exerted on the air by the helicopter's rotor?
An AC adapter for a telephone-answering unit uses a transformer to reduce the line voltage of 120 V (rms) to a voltage of 10.0 V. What is the rms power delivered to the transformer
The sun transfers enegry to the earth by radiation at a rate of approximately 1.00kW per square meter of surface. what would be the length of its sides in kilometers and in miles
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