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You drop a rock in a pond and observe a wave propagating on the surface of the pond. How can you estimate the frequency, speed. and wavelength of the wave?
A fighter plane is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. Find the work done on the plane by the catapult
Since volume is inversely proportional to pressure, volume decreases as pressure increases.
A cord is used to vertically lower an initially stationary block of mass M = 30 kg at a constant downward acceleration of g/5. Find the kinetic energy of the block
Skid is going to attempt a field goal by kicking the football from a point 40 yards out from the goal. The ball must clear the cross bar that is 3m off of the ground. Skid kicks the ball with a velocity of 20m/s at an angle of 45 degrees.
a dynamite blast at a quarry launches a rock straight upward and 2.3 s later it is rising at a rate of 14 ms. assuming
a grade 30 cast iron pressure vessel has a sealed head diameter of 20 inches. it uses ten 1 14 unf steel studs that are
A 10 gram bullet is fired horizontally with a speed of 155 m/s into a 0.3 kilogram block that is initially at rest at the edge of a table of height 1.225 meter, obtain the horizontal distance the block will traverse before landing on the ground
A block of mass 2.00kg starts at rest at the top of a ramp that is inclined delta= 40.0 degrees with the horizontal. The block slides down the ramp a distance of 3.60 meters where it contacts a relaxed spring with K=300N/m. If the coefficient of k..
Identical objects are located at the same distance from two spherical mirrors, A and B. The magnifications produced by the mirrors are mA = 4.1 and mB = 2.0. Find the ratio fA/fB of the focal lengths of the mirrors.
The centers of a 14kg lead ball and a 110g lead ball are separated by 8.0cm. What gravitational force does each exert on the other
A 1000-W motor power a hoist used to lift cars at a service station. If it is replaced with a 2,000W motor, determine how long would it take
he rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation, Calculate a numerical value for the intensity of sunlight
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