Top of the window the windowsill
A flower pot fell of a windowsill and falls past the window below. you may ignore air resistance. it takes the pot .470s to pass the window, which is 1.80m hight. how far is the top of the window below the windowsill from w/c the flower pot fell?
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Reduce the naive estimate by precisely 55 orders of magnitude or more. Yet, if the dark energy is not quantum vacuum energy, what is it?
What is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (Assume the cars do not have negative lift.)
A 19 g rifle bullet traveling 210 m/s buries itself in a 3.4 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement.
The fundamental mode of agiven string under a given tension is at frequency f_1. If we pulled the string four times tauter, what is now the frequency of the new fundamental mode in terms of the old f_1.
A negative charge -21.00μ C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges?
man pushes a lawn mower on a level lawn with a force to 200 N. If 50% of this force directed horizontally, how much work, in J, is done by the man in pushing the mower 7.2 m?
A gas is compressed at a constant pressure of 0.800 atm from 10.00 L to 3.00 L. In the process, 370 J of energy leaves the gas by heat. What is the work done on the gas?
In a series RLC AC circuit, the resistance is , the inductance is mH, and the capacitance is μF. The maximum potential is V, and the angular frequency is rad/s. Calculate the maximum current in the circuit.
An artillery shell is fired with an initial velocity of 300 m/s at 46° above the horizontal. To clear an avalanche, it explodes on a mountainside 48.5 s after firing. What are the x and y components of the shell where it explodes, relative to
An oil drop carries one excess electron and weighs 9.3 10-15 N. What electric field strength is required to suspend the drop so it is motionless?
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