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Q. A 2200 kg sport utility vehicle travelling at 86 km/h can be stopped in 0.15 s if it hits a concrete wall. Presume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of car both before and after the crash, and the velocity changes in 0.15 s.
Q. Find out the gravitational force of attraction between the moon and the earth, given the following: Me = 5.98 x 1024kg, Mm = 7.25 x 1022 kg,d = 3.85 x 10^8m
A flea pulls on a puck with force 7 microN at an angle of 30?. Another flea pulls on the puck with force 2 microN at an angle of -60?.
The metal equilateral triangle in the figure, 20 {rm cm} on each side, is halfway into a 0.10 {rm T} magnetic field.What is the magnetic flux through triangle.
What is EMF in the secondary circuit
imagine the water is in freefall as it drops. What charge must be on each plate.
What is the acceleration in m/s of a 0.001kg bullet if the force of recoil gives an acceleration of 4.390 m/s? The gun has mass of 0.20 kg.
The coefficient of expansion of iron and zinc
A 0.6 kg block of ice is sliding by you on a very slippery floor at 3.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0035 seconds.
What is magnitude of the momentum
What resistive force (assumed to be constant) does the wood exert on bullet? How long does it take the bullet to come to rest.
Before throwing a 1.49 kg discus, an athlete rotates it along a circular path of radius 1.18 m. The maximum speed of the discus is 25.7 m/s.
The drill pipe has an outer diameter of 75 mm, a wall thickness of 6 mm, and a weight of 0.8 kN/m. If it is subjected to a torque and axial load as shown.
On a day of 30 degrees celcius, full sun, how hot would a granite paver get? Will a dark grey one get much hotter than an off white coloured one.
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