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a racing dog is initially running at 100 ms but is slowing downa how fast is the dog moving when its kinetic energy has
radioactive isotopes are often introduced into the body through the bloodstream their spread through the body can then
the temperature of 200 moles of argon gas is lowered from 280 102 k to 190 102 ka find the change in the internal
an infinitely long line of charge has a linear charge density of 500times1012 cm a proton is at distance 120 cm from
while an elevator of mass 832 kg moves downward the tension in the supporting cable is a constant 7730 n between t 0
suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months as
a bird is launched at a speed of 25 meters per second at an angle of 29deg to horizontal from a height of 13m above the
an electron and a positron have masses of 911 10-31 kg they collide and both vanish with only electromagnetic radiation
two flexible balls rolling along a frictionless horizontal surface collide with each other the larger of the balls
a diffraction grating 230 mm wide has 5780 rulingscalculate the distance d between adjacent rulingsfind the angle at
a target glider whose mass m2 is 340 g is at rest on an air track a distance d 53 cm from the end of the track a
consider two transformers transformer a has 300 turns on its primary and 500 turns on its secondary transformer b has
a black wood stove with surface area 46 rm m2 is made from cast iron 40 rm mm thick the interior wall of the stove is
three resistors with values 1 ohm 2 ohm and 4 ohm are connected in series in a circuit with a 9v battery what is the
a wire of thickness d 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid a current i 01 a
an ac generator consists of a coil with 50 turns of wire each with an area of 002 m2 the coil rotates in a uniform
a rock stuck in the tread of a 630-cm-diameter bicycle wheel has a tangential speed of 280 ms when the brakes are
an archer standing on a 15deg slope shoots an arrow 20deg above the horizontal as shown in the figure how far down the
a magnetic computer disk 70 cm in diameter is initially at rest a small dot is painted on the edge of the disk the disk
you are pulling your younger sister along in a small wheeled cart you weight 650 kg and the combined mass of your
a solid sphere of radius 8 cm and mass 5 kg is sitting on a level table and is attached with a string over a pulley
suppose that 12 mol of nitrogen gas in contact with a thermal reservoir that holds the temperature fixed at t098c has
a cannonball is fired out of a cannon at 50 ms at 45 degrees above horizontal on level grounda how long will the
a daredevil on a motorcycle leaves the end of a ramp with a speed of 390 ms as in the figure below if his speed is 368
a physics student playing with an air hockey table a frictionless surface finds that if she gives the puck a velocity