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A person going for a morning jog on the deck of a cruise ship is running toward the bow of the ship at 2.2 m/s while the ship is moving ahead at 7.5 m/s. what is the velocity of the jogger relative to the water? Later, the jogger is moving toward the stern of the ship. What is the jogger's velocity relative to the water now?
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
A boat moves slowly inside a marina with a constant speed of 1.50 m/s. How fast is the boat moving after accelerating for 5.00s
A baseball pitcher throws a baseball horizontally at a linear speed of 42.5 m/s (about 95 mi/h). find the tangential speed of a point on the "equator" of the baseball
The image of a tree on a 35 mm color slide is 1.7 mm high. It is to be projected onto a screen 8.0 m from the slide, and is to appear 559 mm high. What is the magnification of the system
A centrifuge in a medical laboratory is rotating at an angular velocity of 360 revolutions/minute. When it is switched off, it rotates 50 times before coming to rest. Find the constant angular deceleration of the centrifuge
a string vibrates at its third-harmonic frequency. the amplitude at a point 30 cm from one end is half the maximum
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
An electron microscope is designed to resolve objectsas small as 0.14 nm. What energy electronsmust be used in this instrument?
A 52.1-kg high-school student hangs from an overhead bar with both hands, What is the tension in each arm when the arms make an angle of 31.00 o with respect to the vertical
A 1.70-kg block slides with a speed of 0.985 m/s on a frictionless horizontal surface until it encounters a spring with a force constant of 695 N/m. Calculate the kinetic energy of the block
A plane is headed due west with an air speed of 224 m/s. Find the velocity of the plane relative to the earth
A rightward force of 15 N is applied 35 degrees above the horizontal to a 6 kg box to move it across a rough surface. Calculate the acceleration of the object
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