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A helicopter is ascending vertically with a speed of 5.0 m/s. At a height of 14 meter above the Earth, a package is dropped from a window. Find how much time does it take for the package to reach the ground?
find the horizontal distance the ball would travel if the same spring were aimed 32.0 deg from the horizontal.
2 blocks are sliding to the right across a horizontal surface. In case A, the mass of each block is 3.0 kg. Derive an expression for the contact force and acceleration
A 480 W heating coil designed to operate from 100 V is made of Iron wire 0.548 mm in diameter, calculate the length of wire used
a man enters a tall tower needing to know its height. he notes that a long pendulum extends from the ceiling almost to
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
In a Young's double slit experiment, the slit separation is made to be exactly 4?. At what angle will the third bright fringe to the side of the central fringe occur? Caution: the angles involved are such that the approximation sin? is not valid.
A crate with a mass of 171.5 kg is suspended from the end of a uniform boom with a mass of 80.3 kg. The upper end of the boom is supported by a cable attached to the wall and the lower end by a pivot (marked X) on the same wall. compute the tensio..
We want to position a space probe along a line that extends directly toward the sun in order to monitor solar flares. How far from Earth's center is the point on the line where the Sun's gravitational pull on the probe balances Earth's pull?
A 21.5-g bullet is fired from a rifle. It takes 2.15 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 620 m/s. find the average net force exerted on the bullet
A Styrofoam box has a surface area of 0.86 m2 and a wall thickness of 2.0 cm. determine the thermal conductivity of the Styrofoam
A 0.500-kg glider, attached to the end of an ideal spring with force constant k=450 n/m, undergoes simple harmonic motion with an amplitude 0.040 m. Compute the maximum speed of the glider
Three identical resistors are connected in series. When acertain potential difference is applied across the combination, What power would be dissipated if the three resistors were connected in parallel across the samepotential difference
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