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A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, she notices the rope makes a 10.0O angle (from horizontal) behind her and a 25.0O angle (from horizontal) ahead of her. What are the tensions in the rope in front and behind her?
A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.
A 1.5kg- block of ice is initially at a temperature of -7.0C a)If 2.6×10^5J of heat are added to the ice, what is the final temperature of the system? b)Find the amount of ice, if any, that remains.
A battery with \Epslion 12.0 V delivers a termal voltage of 11.2 V to a 45.0 V to a 45.0 \Omega load resistor. Calculate The value of the battery's internal resisance
A hockey puck struck by a hockey stick is given an initial speed of 10 m/s. how far will the puck slide before stopping
In a certain chemical process, a lab technician supplies 231J of heat to a system. What is the increase in the internal energy of the system
A proton (mass 1.67 × 10 ?27kg) is moving at 1.15 ×10 ?6m/s directly toward a stationary helium nucleus (mass 6.64 × 10 ?27kg). After a head-on elastic collision, what is the helium's velocity
A closely wound, circular coil with radius 2.10cm has 830 turns. What must the current in the coil be if the magnetic field at the center of the coil is 5.00×10?2
A 0.600 kg ball falls directly down onto concrete, hitting it with a speed of 13.5 m/s and rebounding directly upward with a speed of 3.00 m/s. What is the impulse on the concrete
A 1400kg elevator accelerates upward at 1.30m/s2 for 11.0m , starting from rest. How much work does gravity do on the elevator
A hypothetical neutral atom has 93 electrons and a nucleus of mass m = 2.23e-25 kg. Calculate the speed of orbit of this electron
Suppose that a disk rotates through five revolutions in 4 seconds. What is the angular rotational velocity
The thrust produced by a single jet engine, m = 6700 kg, creates a force of F = 67000 N. It takes the jet a distance of d = 0.8 km to take off. What is the take-off speed of the jet vt in m/s
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