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A placekicker must kick a football from a point 36.0 m (about39.0 yd) fm the goal, and the ball must clear the crossbar, whichis 3.05 m high. When kicked the ball leaves the ground with avelocity of 22.0 m/s at an angle of 46.0 to the horizontal.
(a) By how much does the ball clear or fall short clearing thecrossbar?
(b) Does the ball approach the cross bar while still rising orwhile falling?
Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.
A ball of mass m makes a head-on elastic collision with a second ball (at rest), What is the mass of the second ball
q1. a small turtle moves at a speed of 165 furlongs per fortnight. find out the speed of the turtle in centimeters per
A boat clashed on something and fell to the ocean floor, a few years later a few researchers sent a robot and found out that the pressure at the same level as the boat was 413 atm. The density of the seawater was 1025 kg/m cubed. what is the depht of..
A proton is accelerated from rest to 0.75c. Find the relativistic momentum of the proton moving at 0.75c.
A piece of glass has a temperature of 73.0 °C. Liquid that has a temperature of 37.0 °C is poured over the glass, determine the specific heat capacity of the liquid
A nonreflective coating (n = 1.40) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of a specific wavelength (vacuum = 535 nm), find the minimum nonzero thickness that the coating can have.
A light bulb is connected to a 120 V wall socket. The current in the bulb depends on the time t according to the relation I = (1.414 A) sin[ (125.6 Hz) t ]. What is the average power delivered to the light bulb
Two particles of masses M1 = 93000 kg and M2 = 4200 kg are initially at rest an a distance 148.1 km apart. How much time does it take for the particles to collide
The distance between between the 1st and 10th minima of a double-slit system is 18 mm, find the wavelength of light generating the interference pattern
A ball is thrown off the top of a building with a velocity v at an angle ? with respect to the horizontal. Find the total time of flight until the ball hits the ground
Assuming that the pass was thrown at the optimal 45 ^circ angle, evaluate what was the speed at which the ball left the quarterback's hand?
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