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A 11kg hammer strikes a nail at a velocity of 8.7m/s and comes to rest in a time interval of 7.4ms
What is the impulse of the given nail?
What is the average force acting on the nail?
A 1200 kg boat is traveling at 80 km/h when its engine is shut off. The magnitude of the frictional force fk between boat, Find the time required for the boat to slow down to 40 km/h
Two loudspeakers in a plane, 5 m apart, are playing the same frequency. If you stand 14 m in front of the plane of the speakers, What is the frequency of the sound
Sketch on Eratosthenes' method, if two observers are due north and south of each other and are separated by 700 km, what is the circumference of their spherical world if they see same star on their meridian at altitudes of 26 degrees and 47 degrees r..
A spectral line from the left side of Saturn's rings, as you see them, is at a wavelength slightly shorter than the same spectral line measured from the right side of Saturn's rings. Which way (direction) is Saturn rotating and why?
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
At time a grinding wheel has an angular velocity of 22.0. It has a constant angular acceleration of 33.0 until a circuit breaker trips at time = 2.20. From then on, the wheel turns through an angle of 431 as it coasts to a stop at constant angular de..
For silver electrode (hint: click just below the word "cesium"), what is the highest energy of an electron ejected by light of 250 nm.
A pilot releases a package from a plane flying horizontally at a constant speed. When the package reaches the ground below, what is the horizontal location of the plane
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
To a first approximation, the velocity of sound in air for different temperatures can be calculated as v=(331+0.6T) m/s, How far away was the lightning
A block of mass 0.6 kg is moving up a 40 degree inclined plane at a speed of 2 m/s. how far up the plane will the block go before stopping
A tennis player swings her 1000g racket with a speed of 11m/s, If the tennis ball and racket are in contact for 12ms, find the average force that the racket exerts on the ball
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