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two horizontal forces 241 n and181 n are exerted on a canoe if thethese forces are applied in the same directions find
an aluminum wire has the same resistanceas a copper wire of the same length find the ratio of the aluminumwires
it takes a force of 850 n to compressthe spring of a toy popgun 0203 m toload a 0153 kg ball with what speed will the
consider the earth and a cloud layer 800m above the planet to bethe platesof a parallel-plate capacitoraif the cloud
high-intensity desk lamps are rated at 30 w but require only 13 v they contain a transformer that converts 125 v
an electric power station is producing 1 x 103 w of power that is to be sent to a small town located 11 km away eachof
an ac generator has 70 rectangular loops on its armature each loopis 15 cm long and 8 cm wide the armature rotates at
an arrow with a mass of 80 g is fired at an angle of 30 degree tothe horizontal it strikes a target located 5 m above
a motor has an armature resistance of 25 ohms if it draws 10 a when running at full speed and connected to a 100 v line
a 250 g piece of lead is heated to 300 celsius and placed into a beaker containing 500 ml of water how much heat energy
the drawing shows four point charges the valueof q is 30 muc and thedistance d is 063 m find the total potentialat the
a mass connected to a horizontal spring sits on a frictionlesstable the mass is moved to compress the spring and the
a styrofoam slab has thickness h and densityrhos when a swimmer of mass m isresting on it the slab floats in fresh
normal atmospheric pressure is 1013 multiplied by 105 pathe approach of a storm causes the height of a mercury
consider rutherfordrsquosexperiment would the estimated size of the nucleus be greater smaller or the same if he has
there are two stable isotopesof the element lithium one of them has three neutrons and the other has four all other
two parallel circularrings of radius r1 m have their centers on the x-axis separated bya distance of 2 m planes of the
a box with a mass of 10 kg is moving to the right its initialspeed is 2 ms after traveling 3 m its speed is 4 ms
a cat spots a flowerpot that sails first up and then down past an open window the pot is in view for 050 seconds and
what energy is released in mev during a reaction in which 167 x10-25 kg of material is converted to energya 50 x 10-14
when blowing across a narrow mouth glass the less wter in the glass the deeper the frequency heard but if the top of
kathy buys a sports car that can accelerate at the rate of 49 mss she decides to test the car by racing with her friend
a child wants to pump a bicycle tire so that its pressure is25x105 pa above that of atmospheric pressure if the child
a wheel of diameter 30 cm has a 40-m cord wrapped around itsperiphery starting from rest the wheel is given a constant
a singly charged ion of iodine makes 7000rev in a field of 450mt in 1290ms calculate its mass in atomic mass units