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The diameter of a locomotive wheel is 1067 mm when measured at zero degrees Celsius. Calculate the difference in the number of wheel rotations required to travel a distance of 200 kilometres for temperatures of -25 and 35 degrees Celsius. Assume that the wheel material is steel. The coefficient of expansion for steel is 11x10-6 m/Cm.
the base of a record player is a disk that has a mass of 2 kg and a diameter of 34 cm. a child spins it so it rotates
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground s..
On a pleasure cruise a boat is traveling relative to the water at a speed of 6.58 m/s due south. Relative to the boat, a passenger walks toward the back of the boat at a speed of 1.84 m/s. What is the magnitude of the passenger's velocity relative to..
A hiker's trip consists of three segments. Path A is 8.0 km long heading 60degrees north of east. Path B is 7.0km long in a direction due east. Path C is 4.0 km long heading 315 degrees counter clockwise from east.
Through a fierce battle by an alien ship all power has been cut to your star ship. Only life support systems are working! your captain comes to you and asks you to design a spring launcher fixed to the star ship that will give a 12.5 kg quantum photo..
Calculate the average speed of the toy car
A pendulum of length I = 2 in and mass m = 0.2 kg is swinging from the ceiling. The amplitude of the oscillation is θmax = 10 degrees. Compute the total force acting on the bob at the lowest point P of the trajectory Give magnitude and direction.
A busy chipmunk runs back and forth along a straight line of acorns that has been set out between his burrow and a nearby tree. At some instant the little creature moves by a velocity of -1.41 m/s.
Calculate the acceleration of an electron that moves through the same magnetic field as in the example, as the same velocity as the proton
On vacation, your 1100 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.10 m/s2. What is the net force acting on the car
Write a basic physics essay about either, energy, temperature, or specific heat. Define work and energy; kinetic energy, gravitational potential energy.
Ramon has a coherent light source with wavelength 586 nm. What is the minimum width of the screen if Ramon wants to display three interference maxima
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