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In Denver, children bring their old jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground (Figure 4-18). Suppose that the tower height is h = 8.00 m, and that the bulls-eye's horizontal distance is d = 4.1 m from the launch point. If the pumpkin is thrown horizontally, what is the launch speed needed to hit the bulls-eye? (Neglect air resistance.)
What voltage must be applied to the 5.00 µF capacitor of a heart defibrillator to store 600 J in it, Find the amount of stored charge
What is the electric potential energy in joules of two electrons separated by 1.33 nm, What would be it be if the separation was doubled
An aluminum bar of mass 2.00kg at 300 C is thrown into a lake. The temperature of the water in the lake is 15.0 C; what is the change in total entropy Delta
A speedboat moving at 30 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of negative 3.5 m/s^2 by reducing the throttle. How long does it take boat to reach the buoy.
When resistors 1 and 2 are connected in series, the equivalent resistance is 21.4 ?. When they are connected in parallel, the equivalent resistance is 4.08
A car traveling at 18 {rm m/s} runs out of gas while traveling up a 24.0^circ slope. How far up the hill will it coast before starting to roll back down.
X rays of wavelength 0.0196 nm are directed in the positive direction of an x axis onto a target containing loosely bound electrons. determine the corresponding change in photon energy
Before starting this problem, review Conceptual. The force vector A has the magnitude of 75.0 newtons (N) and points due east. The force vector B has a magnitude of 101 N and points 72.9 ° north of east.
15. An object weighing 300 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. find the density of the object
Due to the wave nature of light, light shined on a single slit will produce a diffraction pattern, What is the width of the first order fringe
As the swimmer approached the Ontario shore, she encountered a cross current of 2 m/s [E 25 S]. Compute her velocity with respect to the crowd observing from the beach (with respect to the ground)
A 1.3-µF capacitor is connected to a 4.7-V battery. What is the magnitude of the charge on each plate?
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