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A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. The final situation is observed to be all water at 18°C. What was the mass of the ice cube?
__________ g
Two solenoids of radii 2 cm and 5 cm are coaxial. They are each 25 cm long and have 380 and 960 turns, respectively. Find their mutual inductance in mH
A small fly of mass 0.21g is caught in a spider's web. What is the value of the effective spring stiffness constant k for the web
q1. an electric circular saw is designed to reach its final angular speed starting from rest in 1.40 s. its average
Two guns aimed at 10 degrees above the horizontal are fired at the same time, bullet A travels at twice the speed of bullet B. Which bullet will hit the ground first
A 1400 kg car carrying four 96 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
A concave mirror (R = 64 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 40.0 cm from the mirror, How far from the wall should the mirror be located
A 5-g bullet is fired into a 1.4-kg block that is resting on a frictionless surface and is attached to a spring with spring constant 312 N/m. After impact, the block with the embedded bullet slides 8 cm across the table, compressing the spring, b..
A bucket filled with dirt of mass 22 kg is suspended by a rope that hangs over a pulley of mass 31kg and radius 0.15 m. everything is at first at rest.
Two point charges are placed along a horizontal axis with the following values and positions: +2 µC at x = 0 cm and - 21 µC at x = 21 cm. At what point (the coordinate) along the x axis is the electric field zero? Expess the answer (in cm) with one d..
Starting from rest, a 5.50-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the normal force
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