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a 140 kg iron horseshoe is taken from a forge at 950degc and dropped into 400 kg of water at 140degc assuming that no
two children with masses 31 kg on the left and 45 kg on the right sit at opposite ends of a 32 m long seesaw with mass
a wheel having a radius 050 m and inertia of 117 kg middot m2 is rotating freely at 54 revmin the wheel can be stopped
a 110m long ramp is inclined at 13 degrees to the horizontal a solid ball is released from rest at the top of the
one end of a string 30 m long is moved up and down with simple harmonic motion at a frequency of 60 hz the waves reach
a wheel 550 cm in diameter accelerates uniformly from 215 rpm to 370 rpm if in this process a point on the edge of this
squids and octopuses propel themselves by expelling water they do this by taking the water into a cavity and then
a person doing a chin-up weighs 680 n exclusive of the arms during the first 250 cm of the lift each arm exerts an
an old fashion record is spinning freely at 78 rpm revolutions per minute when another record is dropped lightly
a very long straight solenoid with a cross-sectional area of 186 is wound with 902 turns of wire per centimeter
a 66-n m torque acts on a wheel with a moment of inertia 175 kg m2 if the wheel starts from rest how long will it
just as it has reached an upward speed of 500 ms during a vertical launch a rocket explodes into two pieces photographs
two converging lenses having focal lengths of f1 111 cm and f2 200 cm are placed 500 cm apart as shown in the figure
a uniform 13-kg trap door is oriented horizontally and hinged as shown what is the magnitude of the torque on the door
a pot of water is boiling under one atmosphere of pressure assume that heat enters the pot only through its bottom
a closed box is filled with dry ice at a temperature of -887 oc while the outside temperature is 244 oc the box is
a piece of glass has a temperature of 710 degc liquid that has a temperature of 380 degc is poured over the glass
the heating element of a water heater in an apartment building has a maximum power output of 40 kw four residents of
a circular disk of radius 20 m rotates starting from rest with a constant angular acceleration of 200 rads2 what is the
whats your normal body temperature it may not be 986degf the oft-quoted average that was determined in the nineteenth
a 28 m long pendulum is released from rest when the support string is at an angle of 28deg with the vertical what is
a bicycle travels 141 m along a circular track of radius 30 m what is the angular displacement in radians of the
a suvey ship on an oceanographic mission sends out a test sound and detects the echo of the wave reflected from the
a spinning object has a moment of inertia of 16 kgm2 it is rotating at a rate of 1 rads if the moment of inertia