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A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 7.76 m/s at the bottom of the rise. Find the translational speed at the top.
In a certain region of space, the electric potential is given by V= 6y. The potential V is given in volts, the coodinate y is given in meters. Find the direction of the electric field
The random noise level of a buzzing mosquito is 32dB and that heard in a typical classroom is 71dB. How many mosquitos are required to make a noise level equivalent to that heard ina typical classroom
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 365 cal/g.
Body A in the figure weighs 122 N, and body B weighs 33.5 N. The coefficients of friction between A and the incline are, What is the acceleration of A if A is initially at rest
A mass m=10kg is oscillates between two springs k 1 =100N/m and k 2 =200N/m. what is the maximum velocity of the mass
A constant current of I = 15 A exists in a solenoid whose inductance is L = 42.2 H. The current is then reduced to zero in a certain amount of time. If the current goes from 15 to 0 A in a time of 75 ms, what is the emf induced in the solenoid
A convex Lens of focal length 18 cm is used as the magnifying glass. At what distance from a tiny insect should you hold this lens to get a magnification of +3.00.
A galvanometer has a coil resistance of 100 ohms and gives a full scale deflection when the potential difference across it is 0.0005 V. What size resistor (with a value measured in ohms) is required
q1. a 0.440-kg blue bead slides on a frictionless curved wire starting from rest at point where h 1.40 m. at point the
What diameter must a helium filled balloon have to float with neutral buoyancy? The mass of the empty balloon is 2.0g
An ideal gas expands at a constant pressure of 2.1 atm from 446 mL to 844 mL. Heat then flows out of the gas, What is the total heat flow into the gas
A 46.0-kg girl is standing on a 159-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, What is the velocity of the plank relative to the ice surface
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