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an object is 794 cm from the surface of a reflective spherical christmas-tree ornament 78 cm in diameterwhat is the
a diver shines a flashlight upward from beneath the water ata 380circ angle to the vertical at what angle does the
an engine moves a boat throughthe water at a constant speed of 15 ms theengine must exert a force of 60 kn to balance
a constant horizontal force f of magnitude 20 n is applied to awheel of mass 20 kg and radius 05 m the wheel rolls
a 12 g bullet moving horizontally strikes and remains in a 30 kg block initially at rest on the edge of table the
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
180 ml of hcl was required to titrate 100 ml of a 100 by mass naoh solution density11 gml what is the concentration of
lab 2 maximum range of a projectile due at the end of week 2 all simulations can be downloaded here this weeks file
calculate the ph of a solution containing 015 m acetic acid and 025 m sodium acetate for acetic acid ka 18 x 10-5