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During a ballet performance a ballerina leaps into the air. If the dancer leaped at 90 degrees, and landed 0.53 seconds after the leap, what was the dancers initial speed?
A force that varies linearly with time according to a relation F = 4t N is applied to an object travelling with a speed of 16-m/s. If the force decelerates the object to a complete stop in 5s, determine the object's mass. Imagine the force is at f..
A 0.57-mH inductor and a 131-? resistor are placed in series with a 24-V battery. What is the maximum energy stored in the inductor
An empty sled of mass 25kg slides down a muddy hill with the constant of 2.40m/s. The slope of the hill is inclined at the angle of 15 degrees with the horizontal.
An 8kg mass is observed traveling with a speed of .08*c. What is the relativisitic momentum
A 200 gm block of metal is heated to 100 degrees Celcius in boiling water. This block is after placed in an aluminum calorimeter cup (mass - 30gm; c - .22 cal/g degrees C) containing 180 gm of water at 20 degrees C.
The spaceship Lilac, based on the Purple Planet, is 755 m long, as measured at rest. At what fraction of the speed of light is Lilac moving
A 10 μF capacitor is charged to 15 V. It is next connected in series with an uncharged 5.00-μF capacitor. The series combination is finally connected across a 50.0-V battery, as diagrammed. Find out the new potential differences across the 5-μF an..
Calculating plants maximum possible thermal and actual efficiency.
Calculate the maximum allowable force that can be applied to stop a 1000 kg vehicle if the maximum allowable acceleration is 2.5 g.
A small statue has a height of 3.8 cm and is placed in front of a concave mirror. evaluate the focal length of the mirror
A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. find the increase in temperature of the nail after 3 blows from the hammer
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted, find the cutoff wavelength
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