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A 285 Kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at 25degrees above the horizontal. The coefficient of frictinobetween teh boat ottom and the ramp's surface is 0.150, and end of the ramp is 2.00 m above the water surface. (a) Assuming the engines are cut off when the boat hits the ramp, whatis the speed of the boat as it leaves the ramp? (b) what isthe speed of the boat when it strikes the water again? Neglect any effects due to air resistance.
A violin string 15.2 cm long and fixed at both ends oscillates in its n = 3 mode. The speed of waves on the string is 273 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
Two blocks are travelling towards eachother. The first has a speed of 10cm/sec and the second has a speed of 60 cm/sec. compute the velocity of the first block after collision
On a summer day, the air conditioning breaks down and the air inyour classroom becomes very warm and muggy with a vapor pressure of20 hPa and a temperature of 25 degree Celsius. what is the virtul temperature of the air?
Determine the amplitude and phase of the resultant motion when two sinuosidal motions having the same frequency and traveling in the same direction are combined, if their amplitude are 3.0 com and 4.0 cima they differe in phave by pi/2 radians.
A diver proposed using a plastic bag full of air, immersed in water, as an underwater lens. what shape should the air pocket have
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 120 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
A 2.0 microF capacitor and a 4.0 microF capacitor are connected in parallet across a 300V potential difference. Calculate the total energy stored in the capacitors
a point charge q = +87.1 micro coulombs is held fixed at the origin. A second charge, with mass m = 0.0576 kg and charge q = +3.5 micro coulombs, Find the electric potential energy of the system of charges
An electron is placed at the origin of a coordinate system O, close to the surface of the Earth. A second electron is placed on the Y-axis at coordinate y so that the electrostatic force on the electron at the origin balances the gravitational force...
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window
What if initially a charge 2.0 C is put on shell #1 with radius 3.2 m, then a far away shell #2 (initially neutral) with radius 8.1 m is connected to shell #1 by a long conducting wire. What is the electric potential V on shell #1
Find the net downward force on the tank's flat bottom, of area 1.60 m^2, exerted by water and air inside the tank and air outside the tank.
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