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a uniform stick 1.5 meters long With a massive 220 kg is pivoted at its center a 3.9 kg bullet is shot through the stick midway between the pivot and one end of the stick the bullet approaches at 250 m/s and leaves at 140 m/s
What is the angular speed of the spinning stick after the collision?
When a certain photoelectric material is illuminated with red light (?=715) and then blue light (?=400), calculate the work function of the material
14g of nitrogen gas at 0°C and 1 atm is compressed in an isochoric process to an pressure of 20 atm. How much heat is inputted into the gas
A particular guitar string is supposed to vibrate at 191- Hz, but it is measured to actually vibrate at 210- Hz. By what percent should the tension in string be changed to get the frequency to the correct value.
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. (a) How long does it take to give the wagon a velocity of 7.4 m/s west? (b) How far from the starting po..
What's the advantage of launching space vehicles from high flying aircraft in place of from the ground.
An ideal spring with a spring constant of 16 N/m is suspended vertically. What is the extension of the spring when the speed is a maximum
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
A 55.5-kg ice skater is moving at 4.08 m/s when she grabs the loose end of a rope, Determine the force exerted by the horizontal rope on her arms
We drop a 26-g ice cube (0C) into 1000 g of water (20C). Find the total change of entropy of the ice and water when a common temperature has been reached
A hollow sphere of radius 0.15 m, with rotational inertia I = 0.078 kg m2 about a line through its center of mass, What is the speed of the center of mass of the sphere at the initial position
The ball has the speed of 12.1 m/s and is moving in a direction of 33.4 degrees east of north, relative to the ground.
A charge Q1 = 6u is at the origin of an x y coordinate system, What are the magnitude and direction of the force of Q2 on Q1, What are the magnitude and direction of the force of Q3 on Q1
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