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A particle of mass m=5 kg is at rest at t=0 seconds. A horizontal new force F(t)= 6t^2 - 4t + 3 is acting on the particle between t=0 and t=5 seconds. Find the speed, v, of the particle at t=5 seconds.
A roller-coaster car moves 207 ft horizontally and then rises 119 ft at an angle of 30° above the horizontal. What is its displacement from its starting point
The fundamental vibrational frequency of HCl molecule is v=2990.946cm^-1 and its equilibrium dissociation energy is De=445.0 kJ/mol. Evaluate the frequency for v=0-->5 pure vibrational transition in HCl in Hz assuming it as a Morse oscillator.
A tank holds a layer of oil, of thickness To = 1.43 m, that floats on a layer of syrup of thickness Ts = 0.640 m, What is the index of refraction of the oil
A box with a total surface area of 1.11 m2 and a wall thickness of 3.1 cm is made of an insulating material. Find the thermal conductivity of the insulating material
the weight of the block on the table is 380 N and that of the hanging block is 175 N. What is the acceleration of the two block
There are some people who believe that Earth has a twin that orbits directly opposite the sun with exactly the same orbital elements and in the saem direction and thus unseen from Earth. The two planets are exactly 180 degrees opposed when they oc..
The current in a 100 watt lightbulb is 0.700A . The filament inside the bulb is 0.120mm in diameter. What is the electron current in the filament
A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of ? = 55..
A block of mass m = 15.5 kg rests on an inclined plane with a coefficient of static friction of ?s = 0.13 between the block and the plane. What is the force of gravity along the plane
A blue ball is thrown upward with an initial speed of 22.8 m/s, from a height of 0.9 meters above the ground. 2.8 seconds after the blue ball is thrown, How long after the blue ball is thrown are the two balls in the air at the same height
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. How much energy is stored in the flywheel
a winch is used to drag a 295n crate up a ramp at a constant speed of 84.0 cms by means of a rope that pulls parallel
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