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An archer pulls her bowstring back 0.432 meter by exerting a force that increases uniformly from zero to 227 Newton.
(a) Obtain the equivalent spring constant of the bow?
(........) N/m
(b) Find how much work does the archer do on the string in drawing the bow?
(.........) J
Boxes are moved on a conveyor belt from where they are filled to the packing station 14m away. what is the minimum transit time for each box
A car is designed to get its energy from a rotating flywheelwith a radius of 1.50 m and a mass of475 kg. Find the kinetic energy stored in the flywheel
Charges of -11.5 nC and -22.1 nC are separated by 0.733 m. What is the potential midway between the two charges?
How many revolutions will the car have gone through.
a bird watcher meanders through the woods walking 0.519 km due east 0.759 km due south and 2.14 km in a direction
the work done by an external force to move a -8.20uc charge from point a to point b is 1.80times10-3j . if the charge
an astronaut is performing a space walk outside the international space station. the total mass of the astronaut with
Diffraction too occurs with sound waves. Consider 1100-Hz sound waves diffracted with a door that is97 cm wide. What is the angle (in degrees) among the two first-order diffraction minima?
For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. Find how much power would be dissipated in the wire, when carrying the maximum allowable current
A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. Illustrate what is the speed of the arrow as it leaves the bow?
A person pushes a 16.2-kg shopping cart at a constant velocity for a distance of 27.5 m on a flat horizontal surface. She pushes in a direction 32.3 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the mag..
A 108-g cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 76°C. What is the final temperature of the water after the ice has melted
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