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A 4kg watermelon is balanced on Bruce's shaved. R. Lee Ermey, who hates watermelons with every fiber of his being, shoots a 50g arrow at it with a speed of 30m/s. The arrow passes through the melon and emerges at 18m/s. Find the speed of the melon as it flies off Bruce's head.
a glider on an air track carries a flag of length l through a stationary photo gate which measures the time interval
After the Sun exhausts its nuclear fuel, its ultimate fate will be to collapse to a white dwarf state. Calculate the surface free-fall acceleration
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. Determine the intensity level of the infrasound
A hunter wishes to cross a river that is 1.4km wide and flows with a speed of 5km/h parallel to its banks.
a 30.0 g ball of clay traveling east at 7.50 ms collides and sticks together with a 30.0 g ball of clay traveling north
A person exerts a horizontal force of F = 190 N in the test apparatus. (h of arm = 0.34 m. And h of flexor muscle= .054 m) Find the horizontal force M that his flexor muscle exerts on his fore arm.
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 1.11 eV. What is the width of the square well
What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly.
A walkway suspended across a hotel lobby is supported atnumerous points along its edges by a vertical cable above eachpoint and a vertical column underneath. through what distance does the point move down
An exoplanet of mass 7.4e26 kg orbits its parent star at an angle of inclination of 28.9 degrees. determine the period of the exoplanet in days
Unpolarized light with intensity I0 is sentrst through a polarizer with the polarizing axis aligned in the vertical direction, and then through a second polarizer with the polarizing axis oriented 30° from the vertical. What is the intensity of the o..
An air spaced parallel plate capacitor has an initial charge of 0.05 uC after being connected to a 10 V battery. Calculate the work done in pulling the plates apart
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