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A 2.0 m long rod has a density explained by λ = a + bx, where λ is the density in kilograms per meter of length, a = 5.0 kg/m, b =4.0 kg/m2, and x is the distance in meters from the left end of the rod. The rod rests horizontally with its ends each supported by a scale. What do the two scales read?
a 1.5-kg object is attached to an ideal massless spring with a spring constant of 20 nN/M OSCILLATES on horizontal, Find the frequency of the oscillations
you are a part of a citizens group evaluating the safety of a high school athletic program. to help judge the diving
The temperatures indoors and outdoors are 299 and 312 K, respectively. How much heat is removed from the house
A 1055 kg van, stopped at a traffic light, is hit directly in the rear by a 735 kg car traveling with a velocity of +2.25 m/s. What is the final velocity of each vehicle
A cylindrical glass of water (H2O) has a radius of 4.42 cm and a height of 11.8 cm. How many moles of water molecules are contained in the glass
When you lift a bowling ball with a force of 82 N the ball accelerates upward with an acceleration a. If you lift with a force of 89 N, the ball's acceleration is 7 multiplied by a.
A potter's wheel (a solid, uniform disk) of mass 5.7 kg and radius 0.65 m spins about its central axis. A 2.1 kg lump of clay is dropped onto the wheel at a distance 0.41 m from the axis. Calculate the rotational inertia of the system.
A particle is located at r=(4.1i+3.1j+5.6k)m . A force F=(9.5j-3.5k)N acts on it. What is the torque, calculated about the origin
aluminum has a density of 2700 kgm3. what is the resistance of an aluminum wire 0.12 cm in diameter and 80 m long? what
A lantern with a 6v, 0.5W bulb uses a battery with emf 6v and internal resistance 3 ohms. How much Power is actually delivered to the bulb
A spring gun is used to launch a metal ball horizontally from a height h1=75.0cm above the floor, What is the height h2 of this taller table
A 2000kg car starts from rest at the top of a 5.00m longdriveway that is sloped at an angle of 20 degrees with thehorizontal. find the speedof the car at the bottom of the drive way
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