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a motor has a constant angular acceleration of 5revsec2 if the motor goes from low speed of 1200rpm tohigh speed in 5
a 20 kg object moving with a velocity of 50 ms in the positive x direction strikes and sticks to a 30 kg object moving
a block of mass 3kg is pulled along a flat surface with acord which makes an angle of 250 above the horizontalthe
if astronauts could travel at v 0970c we on earth would say it takes 420 0970 433years to reach alpha centauri 420
suppose the space shuttle is in orbit 320km from the earths surface and circles the earth about once every909 minutes
the length of a spaceship is measured to be exactly 13 its restlength a what is the speed parameter beta ofthe
the three air cartsshown in the figure have masses reading from left to right ofm 2m and 4m respectively initially the
a 15 kg playground ball is moving with a velocity of 30 ms directed 30 degrees below the horizontal just before it
a rotating wheel requires 50 s to complete 50 revolutions its angular speed at the end of the 50 s interval is 75 rads
a ball of mass m at one end of a string of length l rotates in avertical circle just fast enough to prevent the string
a spring is hung from the ceiling a 0400kg block is then attached to the free end of the spring whenreleased from rest
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult the
a submarine is 300 m horizontallyout from the shore and 143 m beneaththe surface of the water a laser beam is sent from
200 j enters a carnot engine from the hot reservoir held at400 k during the entire cycle 50 j of useful work
an anthropologist focuses her camera on a distant mountainpeak when she sees a very interesting looking monkey just 52
four polarizing sheets are placed one behind the other each onemaking an angle of 20o with the preceding one a
a 14700n car is traveling 25ms the brakes are applied suddenly and the car slides to a stop the average braking force
lab 2 maximum range of a projectile due at the end of week 2 all simulations can be downloaded here this weeks file
an experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at
one whale says to its friend 75 km away how long will it before the friend hear the speed of a soundin water is1500
a wheel is placed on a test stand so that it is free to turn on its axle if a constant net torque of 750 n m is
light of wavelength 589 nm is used to view an object under a microscope if the aperture of the objective has a diameter
a 30 kg particle with velocity v 50 ms i -60 ms j is at x 30 m y 80 m it ispulled by a 70 n force in the negative x
an undersea research chamber is spherical with an external diameterof 520 m the mass of the chamber whenoccupied is
a person walks in the following pattern 60 km north then 20 km west and finally 21 km south a how far in km and b at