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A cube of ice is taken from the freezer at -8.9 degrees C and placed in a 93 g aluminum calorimeter filled with 329 g of water at room temperature of 20.0 degrees C. The final situation is observed to be all water at 17.0 degrees C. What was the mass of the ice cube?
A tsunami is generated by an earthquake off the coast of Alaska. It has a wavelength of 677 km. It travels at a distance of 3536 km in a period of 5.49 hr. What is the frequency of the wave in Hz?
A parallel-plate air capacitor has a capacitance of 300 {\rm pF} and a charge of magnitude 0.250 \mu {\rm C} on each plate. The plates are 0.500 {\rm mm} apart. What is the surface charge density on each plate
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2. A. 11.2 seconds B. 12.1 sec..
q1. a wheel 66.0 cm in diameter accelerates uniformly from 211 rpm to 395 rpm in 7.5 s. how far will a point on the
A proton moves with a speed of 2.4 106 m/s horizontally, at the right angle to a magnetic field. What magnetic field strength is required to just balance the weight of the proton and keep it moving horizontally.
You (height of your eyes above the water, 1.75 \rm m ) are standing 2.00 \rm m from the edge of a 2.50-\rm m-deep swimming pool. How far from the side of the pool is your cell phone
A 1 530-kg automobile has a wheel base (the distance between the axles) of 2.70 m. Find the force exerted by the ground on each wheel
A 1.00kg black (m) us on a frictionless plane inclined at 20 degrees. The block is attached to a spring (k = 25N/m) that is fixed to a wall at the bottom of the incline. how far does it drop before coming to rest
the vehicle is used to transport supplies to and from the bottom of the 25-present grade. each pair of wheels one at a
Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
1. List real-life communications systems that use the wideband modulations. 2. Explain the reasons in which binary RF digital modulations are more power efficient than M-ary binary digital modulations.
A box is put on a slide to move it from one part of a factory to another the slide is at an angle of 20 degrees below the horizontal the coefficient of friction between the box and slide is 0.352 what is the acceleration of the box.
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