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If 40 g of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity?
How much ice must melt in order to cool the hot water down to this temperature?
What lengths of ship three sides according to the observer
A student removes a 10.50 kg stereo from a shelf that is 1.802 m high. The amplifier is lowered at a constant speed to a height of 0.75 m. What is the work done by a) person and b) gravitational force that acts on the amplifier.
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
Two negative chrges are placed on the x-axis. A charge of -11.4 micro coulmbs is placed at x=0cm and another charge of -5.4 m/C is placed at x=119cm. where on the x axis is the total field between the two charges zero? Answer in cm
A rod is initially at a uniform temperature of 0 o C throughout. One end is kept at 0oC , and the other is brought into contact with a steam bath at 100 o C.
In a ballistics test, a 23-g bullet travelling horizontally at 1300 m/s goes through a 40.0 cm-thick 450-kg stationary target and emerges with a speed of 900m/s. The target is free to slide on a smooth horizontal surface.
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
Find out an angular momentum of the system
a car with a mass 1865 kg is travelling west and slows down uniformly to 8.5 m/s over a distance of 108 m. calculate the initial speed of the car if the required braking force is 7525 N
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
assume a bar 2.5 m long expands 0.5 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
Find out the least compression of the spring
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