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A football quarterback throws a pass at an angle of 30.5°. He releases the pass 3.50 m behind the line of scrimmage. His receiver left the line of scrimmage 2.1 s earlier, going straight down-field at a constant speed of 7.50 m/s. With what speed must the quarterback throw the ball so that the pass lands gently in the receiver's hands without the receiver breaking stride? Assume that the ball is released at the same height it is caught and that the receiver is straight downfield from the quarterback at the time of release. (Ignore any effects due to air resistance.)
A cannon is launched at an angle of 45.00 and the cannon ball lands 301 m away. What was the velocity of the cannon ball
A 2.40cm × 2.40cm square loop of wire with resistance 1.10×10?2? has one edge parallel to a long straight wire. calculate the current in the loop
A nuclear power plant is 24% efficient, meaning that 24% of the power it generates goes into producing electricity. The remaining 76% is wasted as heat. The plant generates 680 MW of electric power. If each fission releases 200 MeV of energy, how man..
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
The electric potential at a position located a distance of 19.8 mm from a positive point charge of 7.80×10-9C, Calculate the value of the second charge
A magnifying lens with a focal length of 5 cm is held 4 cm from an object that is 1cm tall. Find the image distance from the lens
Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9m and flies at constant altitude in a northerly direction with a speed of 750km/h .If the vertical component of the Earth's magnetic field is 5.3×10^?6T , and its horizontal component is..
Light from a helium-neon laser (l=608 nm) passes through a circular aperture and is observed on a screen 2.15 m behind the aperture. What is the diameter (in mm) of the hole
A 4.6muC charge is at the center of a cube 6.5 cm on each side. What is the electric flux through one face of the cube
What is the relationship between the change in Kinetic Energy and the change in Gravitational Potential Energy of a system
An airtight box has a removable lid of area 2.46 × 10-2 m2 and negligible weight. find the magnitude of the force required to pull the lid off the box
theres an electron in a one-dimensional potential well of width lz in the z direction withnbspinfinitely high potential
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