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a 100 w lightbulb is plugged into a standard 120v outlet how much does it cost per month 30 days toleave the light
a sled may be either pulled with a rope or pushed from behindassume that in either case the propelling force acts at an
the figure below shows a circuit with a battery and 3 resistorsthe resistors have values of 4omega 3omega and 6omega
two capacitors one 120 muf and the other of unknown capacitance are connected in paralel across a battery of emf 90v
an airplane propeller is rotating at 1900 rpma compute thepropellers angular velocity in radsb how many seconds does
a 80 g bullet is fired into a 90 kg wood block that is atrest on a wood table the block with the bullet embedded
a tennis ball of mass 570 g is held just above a basketballof mass 590 g with their centers vertically aligned
a 200 n scaffold is held upby a wire at each end the scaffold is 12 m long a 300 n box sits4 m from the left end what
an archer shoots an arrow toward a 300 g target that issliding in her direction at a speed of 350 ms on a
a motorist drives along a straight road at a constant speed of 150ms just as she passes a parked motorcycle police
a movie star catches a reporter shooting pictures of her at homeshe claims the reporter was trespassing to prove her
a 60kg astronaut is on a space walk away from the shuttle whenthe tether line breaks she is able to throw her 10kg
1- can you explain the differences between elastic collisionand inelastic collesion with some examples2- i dont fully
venus has a period of revolution of 225 earth days find the distance between the sun and venus as a multiple of earths
two long straight parallel wires of length 45 m carry parallel currents of 31 a and 11aa if the wires are separated by
the missle traveling at 15 ms exploded into parts with mass 6and 14 kg the velocity of the big part increased to 24
you are in charge of regulating the temperature of the swimming pool for the next olympic games the water in the pool
two astronauts comparing lunches one has an apple and the otherhas an orange they decide to trade astronaut 1 tosses
a projectile is fird with an inital speed ofvi20ms at an angle theta30o with the horizontal finda the values of vxi and
water density 1x103 kgm3 flows at 10 ms through a pipe withradius 0030 m the pipe goes up to the second floor of
at rest a cars horn sounds the note a 440hz the horn is sounded while the car is moving at a velocityv a bicycle is
two satellites of the same mass are in circular orbits of differentradii above the earths equator satellite a is in a
you are in charge of a cannon that exerts a force 17900 n on a cannon ball while the ball is in the barrel of the
a polar bear of mass 327 kg stands on an ice floe 129 cm thick what is the minimum area of the floe that will just
a 350g air track cart on a horizontal air track is attached to astring that goes over a pulley with a moment of inertia