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a force in the negative direction of an x axis is applied for 34 ms to a 040 kg ball initially moving at 16 ms in the
a 105 kg fullback is running at 48 ms to the east and is stopped in 075 s by a head-on tackle by a tackler running due
pat kinch used a racing cycle to travel 7557 kmh suppose kinch moved at this speed around a circular track if the
in 1994 mata jagdamba of india had very long hair it was 423 m long suppose mata conducted experiments with her hair
with an average mass of only 300 g the ouse lemur of madagascar is the smallest primate on the earth suppose this lemur
an ostrich lays the largest bird egg a typical diameter for an ostrich egg at its widest part is 12 cm suppose an egg
in 1994 susan williams of california blew a bubble-gum bubble with a diameter of 584 cm if this bubble were rigid and
consider an ideal gas at 270 degrees celsius and 100 atmosphere pressure imagine the molecules to be uniformly spaced
the four strings pass over the bridge of a violin as shown below the strings make and angle of 720deg with the normal
two horses pull a large crate of negligible mass at constant speed across a barn floor by means of two light steel
an object of mass m 3 kg is released from a height h 5 m of the top of a rough 45 incline slides on a horizontal
an object of mass m 2 kg is located between two massless springs on a frictionless incline of 30o initially the
a ball bounces upward from the ground with a speed of 14 ms and hits a wall with a speed of 12 ms how high above the
1 at an accident scene on a level road investigators measure a cars skid marks to be 88 m long it is a rainy day the
1 how much work is required to stop an electron m 931x10-31 kg which is moving with a speed of 190x106 ms2 a
1 a 75 kg bobsled is pushed along a horizontal surface by two athletes after 45 m from rest the bobsled has a speed of
the temperature of a silver bar rises by 100degc when it absorbs 123 kj of energy by heat is 525 grams determine the
the four tires of an automobile are inflated to a gauge pressure of 17 105 pa each tire has an area of 0021 m2 in
a parallel-plate capacitor has fixed charges q and -q the seperation of the plates is then doubled by what factor does
a football is kicked at ground level with a speed of 400 ms at an angle of 350deg to the horizontal how much later does
on a frozen pond a 7 kg sled is given a kick that imparts to it an initial speed of v0 23 ms the coefficient of
a crate of mass 125 kg is pulled up a rough incline with an initial speed of 150 ms the pulling force is 100 n parallel
a mechanic pushes a 28 multiplied by 103 kg car from rest to a speed of v doing 5400 j of work in the process during
a flight attendant pulls her 70 n flight bag a distance of 378 m along a level airport floor at a constant velocity the
initially a 200-kg mass is whirling at the end of a string in a circular path of radius 0750 m on a horizontal