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A tennis ball is struck at the base line of the court, 11.5 m from the net. The ball is given an initialvelocity with a horizontal component equal to 27.0 m/s at an initial elevation of 1.21 m.
a) What vertical component of initial velocitymust be given to the ball, such that it barely clears the 1.00 mhigh net?
b) How far beyond the net will the ball hit the ground?
A cannon tilted up at a 30° angle fires a cannon ball at 65 m/s, What is the ball's impact speed on the ground below
An atom of U238 spontaneously decays into two components. One is a small fragment that is ejected with a speed of 1.50x107 m/s, what are the masses of the fission products
If 600 j of heat are added to 50 g of water initially at 20 degrees C. What is the final temperature of the water
A closed box is filled with dry ice at a temperature of ?78.4 °C, while the outside temperature is 22.8 °C. Find the thermal conductivity of the material from which the box is made
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
A projectile is fired with an initial speed of 65.2 m at an angle of 34.5? above the horizontal on a long flat firing range. find The maximum height reached by the projectile
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, What is the energy lost by the pendulum
Calculate the location of the center of mass of the Earth-Moon-Sun system during a full Moon. A full Moon occurs when the Earth, Moon, and Sun are lined up. make Use of a coordinate system in which the center of the sun is at x=0 and the Earth and..
A metal ball with a mass of 3.77·10^-6 kg and a charge of +4.79 mC has a kinetic energy of 6.21·10^8 J. It is traveling directly at an infinite plane of charge with a charge distribution of +4.05 C/m^2. If it is currently 1.39 m away from the plane o..
A sample of liquid has an initial volume of 1.5L. The volume is reduced by 0.2mL, when the pressure increases by 140kPa. What is the bulk modulus on the liquid
If the wavelength of ultrasound in soft tissue is 0.308 mm, what is the frequency producing this wavelength
A person of mass M lies on the floor doing leg raises. His leg is 0.85m long and pivots at the hip, How far does the entire body's center of mass rise
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