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A grenade with a mass of 0.4 kg is thrown with an initial speed of 11 m/s at an initial angle of π/7 rad relative to the horizontal. When it is at the exact apex (top) of its trajectory, it explodes into two fragments, one has a mass of 0.1 kg the other has a mass of 0.3 kg. A total of 80 kJ of kinetic energy is added to the fragments. The velocities of the two fragments are completely horizontal at the instant of the detonation. Where do the fragments land?
The angle of incidence at a solid/liquid boundary is 60.4°, and the index of refraction of the solid is n = 1.96. Find what must be the index of refraction of the liquid such that the direction of the light entering the liquid is not changed
q1. a trapeze artist swings in simple harmonic motion with a period of 7.0 s. the acceleration of gravity is 9.81 ms2.
You want to design the loop-the-loop toy. The idea is that a ball of mass m=0.01 kg, determine the minimum height necessary for the ball to remain in contact with the track during the whole loop-the-loop journey
A rocket moves upward, starting from rest with an acceleration of 32.0 m/s2 for 4.32 s. How high does it rise above the ground
at a grinding wheel has an angular velocity of 27.0 . it has a constant angular acceleration of 35.0 until a circuit
three particles of charge q are at the corners of an equilateral triangle of side length a.a at what point if any in
In an internal combustion engine, air at atmostpheric pressureand a temperature of about 20 degrees celcius is compressed in the cylinder by a piston to 1/9 of its original volume, Estimate the temperature of the compressed air
A Bead with a mass 10g can slide without friction on a circular motion massless hoop that is in a vertical plane and has a radius of 5 cm. The hoop rotates at a constant rate of 4rev/s about a vertical diameter.
An advanced space probe in the twenty-first century travelsfrom the earth with a speed of 5.00 x 106 m/s relativeto the earth and then returns at the same speed. find the difference in the elapsed times on the two clocks
A roller-coaster car moves 227 ft horizontally and then rises 115 ft at an angle of 31.0° above the horizontal. What is its displacement from its starting point
the ball leaves the students hand with a speed of 12.0 when the hand is 2.20 above the ground. how long is the ball in
a wire with a current of 2.9 a is at an angle of 35.0 degrees relative to a magnetic field of 0.89 t. find the force
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