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A spring length of 40 cm, if given a force of 200N, increased spring length of 8 cm. Then spring is cut into two equal parts, and both parallelized. How much effort is needed so that the spring is still increasing length of 8 cm, when installed in parallel?
A bullet shot straight up into the air returns to it's starting point in 10 seconds. What is the initial speed of the bullet
A train is moving parallel and adjacent to a highway with a constant speed of 33 m/s. What is the speed of the car just as it passes the train
A thermodynamic system undergoes a process in which its internal energy decreases by 455 J. Find the energy transferred from it by heat
A m = 10 kg block is released from a height of h = 3 m. It travels down a frictionless circular shaped ramp to the bottom where it encounters a rough surface. Find the coefficient of kinetic friction for the rough surface
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
question1using a simply pulley or rope system a crewman on an arctic expedition is trying to lower a 6.30 kg crate to
The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. It is allowed to slide down the incline. What are they at the bottom of the incline
three point charges are placed on the y-axis a charge q at ya a charge -2q at the origin and a charge q at y-1 . such
Consider a relativistic particle of mass m and kinetic energy T. Derive an expression for the particle's speed u in terms of T and m. Find the percent discrepancy for each case
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
A 190 kg block is pulled at a constant speed of 4.4 m/s across a horizontal floor by an applied force of 138 N directed 37° above the horizontal. Illustrate what is the rate at which the force does work on the block?
A starship that was traveling at 0.7 c just returned from a 4-year voyage. If the time means 4.0 years of earth time, how much time elapsed on the ship? If the time means 4.0 years of ship time, how much time passed on earth?
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