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A car starts at a position of x=2km and has a speed of 1 mph. After 56 s thecar has a speed of 44 mph. Determine the magnitude of the car's average acceleration during this time.
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him, What is the force of friction between the losing player's feet and the grass
The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively, What is the final overall magnification of the microscope
the planet mars has a mass of 6.42e23kg and a raduis(from its centre to the surface)of 3.38e6m. determine how heavy he would "feel" he weighed
the shear modulus of steel is 8.1x10^10N/m^2. a steel nail of radius 7.5x10^-4m projects 0.040m horizontally outward from thw wall. what is the vertical deflection of the other end of the nail
A 1.4 kg object at x= 2.00m, y = 3.10m moves at 3.96 m/s at an angle of 45 degrees north of east. Calculate the magnitude of the object's angular momentum
That is the sound from the organ bounces back and forth off the church walls many times before the sound inentsity decays away completely. If the reverberation time is 10s and the church has the approximate shape
Two objects moving with a speed v travel in opposite directions in a straight line. The objects stick together when they collide, and move with a speed of after the collision. What is the ratio of the final kinetic energy of the system to the initial..
A small block with mass 0.0525kg slides in a vertical circle of radius 0.0750m on the inside of a circular track. What is the magnitude of the normal force that the track exerts on the block when it is at the top of its path
a Two vehicles travelling on a road in the same direction collide. Vehicle 1 has a mass 1200 kg and is travelling at 30m/s. Determine the change in momentum of each vehicle
A balloon is filled with 5.45 liters of helium at a pressure of 1.25 atm and a temperature of 29.5° C. Find the mass of the helium
Two 2.3-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 battery. What is the charge before the Teflon is removed
A 2.00-cm-diameter parallel-plate capacitor with a spacing of 0.200mm is charged to 300V. What is the total energy stored in the electric field
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