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A motorist drives north for 32 min at 85 km/h and then stops for 15 min. He then continues north, traveling 125 km for 2.0 h.
(a) What is his total displacement?
(b) What is his average velocity?
A thin disk of mass 4.9 kg and radius 23 cm is suspended by a horizontal axis perpendicular to the disk through its rim. Find the period of the subsequent simple harmonic motion
an ac power generator produces 60 a (rms) at 4000 v. the voltage is stepped up by an ideal transformer, what is the turn ratio of the transformer
Suppose that a person in Tilted Land throws a ball straight up at 20 m/s. Where does the ball hit the ground?
Define potential difference. What is the difference between electric potential and electric potential energy? What is the unit for potential difference
Light of wavelength 665 nm is used to illuminate normally two glass plates 12 cm in length, How many bright fringes appear along the total length of the plates
A 685 kg car stopped at an intersection is rear-ended by a 1470 kg truck moving with a speed of 12.5 m/s. find the final speed of both vehicles after the collision
A gardener pushes a box of tools across a driveway by applying a 20.5- N force that pushes downward at an angle of 34.9 o with respect to the horizontal
Is it possible for both the pressure and volume of a monatomic ideal gas to change without causing the internal energy of the gas to change?
You have a string with a mass of 0.0125 kg. You stretch the string with a force of 9.75 N, What is the wavelength of the standing wave you create in the string and What is the frequency
A car of mass 1,000 kg starts from rest and accelerates to a velocity of v = 24 m/s in a time interval of ?t = 11 seconds. what force is needed for this acceleration
a block of mass 0.244 kg is placed on top of a light vertical spring of force constant 4 925 nm and pushed downward so
Suppose you're skiing up a 20m tall slope at the indicated angle of inclination. What minimum initial speed must you have at the bottom to just make it to the top
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