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A mason working on a house drops a hammer from the top of a roof located 8.52 meters above the ground. Determine the time required for the hammer to reach the ground?
particals (mass of each =0.20kg) are placed at the 40-cm and100cm marks of a meter stick of negligible mass. what is the initail angular acceleration on the body
A circuit consists of a battery with a closed circuit, a terminal voltage of 12.0 V, and 1.0-?, 2.5-?, 5.5-?, and 7.0-? resistors connected in series, Calculate the equivalent resistance of the circuit
An electric field ofmagnitude 11000 N/C and directed upward perpendicular to theEarth’s surface exists on a day when a thunderstorm is brewing. A truckthat can be approximated as a rectangle 2.7 m by 3.2 m is traveling along a road that isinclined..
A baseball (m = 139 gram) approaches a bat horizontally at a speed of 38.5 m/s (86 miles per hour) and is hit straight back at a speed of 45.4 m/s (102 mi/h). find the average force exerted on the ball by bat
Estimate the speed of the water just before striking the turbine blades (overlook air resistance).
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
the string in the figure below is l 148 cm long has a ball attached to one end and is fixed at its other end. the
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.734 diopters. How far is her near point from her eyes
An electron traveling north enters a region where the electric field is uniform and points west. The electron:
A molecule of DNA (deoxyribonucleic acid) is 2.22 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Find the effective spring constant of the molecule
A hole of radius r has been drilled in a flat, circular plate of radius R. Find the moment of inertia for rotation about an axis through the centre of the plate
A factory robot drops a 10 kg computer onto a conveyor belt running at 3.1 m/s. How far is the computer dragged before it is riding smoothly on the belt
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