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A small rocket is powered upward on a lift off by an engine thrust of 12000 Newton. If the resulting upward acceleration is 6.4m/s2, determine what is the mass of the rocket?
A 2.00 kg block of ice is placedagainst a horizontal spring that has force constant k = 220 N/m andis compressed 0.037 m. What is the speed of the block after it leaves the spring
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.72 x 10^-6 T. What is the intensity S of the wave
A lid is put on a box that is 14 cm long, 13 cm wide, and 8.0 cm tall and the box is then evacuated until its inner pressure is 7.3 104 Pa. How much force is required to lift the lid at sea level
Two polarizers are oriented at 38 degrees to one another. Light polarized at a 19 degree angle to each polarizer passes during both. What percent reduction in intensity takes place?
Two pencils have the same average density (500 kg/m^3). The mass of the mechanical pencil is twice the mass of the conventional pencil. Which accelerates at the greater rate
A potential difference of 14.0 V is applied across a wire of cross-sectional area 5.01 mm2 and length 745 km. What type of wire is this
positive point-charges of 16.5 muc are fixed at two of the vertices of an equilateral triangle with sides of 2.45 m
An arrow of mass 20 gram is shot horizontally into a bale of hay, striking the hay with a velocity of 60 m/s. Obtain the average stopping force acting on the arrow
An electron is released from rest at a perpendicular distance of 10.8 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 8.1 μC per meter. What is the magnitude of the electron's initial acceleration..
Two negative point charges are separated by 16 and feel a mutual repulsive force of 1.55. The charge of one is three times that of other.
After getting a drink of water, a hamster jumps onto an exercise wheel for a run. Find the work done by the hamster to get the exercise wheel moving
A rope of mass M and length L0 lies on a frictionlesstable with a length 'l' initially hanging ove theedge. How fast is the rope moving
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