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a hoop of mass m2 kg and radius r005 m is rolling down an inclined plane of vertical height 1 meter at an angle of
a calculate the energy released by the alpha decay of 222rnb calculate the alpha radiation energyc calculate the energy
the isotope 64cu can decay by ec beta- and beta transtionsa calculate the q values for the three modes of decay to the
a cannon shoots a cannonball from the ground level ignore the height of the cannon to the top edge of a cliff that is
a car travels east at 94 kmh for 50 h it then travels 450deg east of north at 129 kmh for 50 ha what is the average
two boxes are connected to each other the system is released from rest and the 200kg box falls through a distance of
the horizontal and vertical components of the initial velocity of a football are 20ms and 30ms respectively assume that
suppose a manufacturing plant has an average sound intensity level of 970 db created by 25 identical machinesa find the
a spring-loaded gun fires a 0080-kg puck along a tabletop the puck slides up a curved ramp and flies straight up into
a 495 kg boy jumps on a 495 kg pogo stick with spring constant 3650 nma find the angular frequencyb find the frequencyc
a block of wood mblock 58 kg rests on a horizontal surface for which the coefficient of kinetic friction is 06 a
a leaf of area 36cm2 and mass 48times104kg directly faces the sun on a clear day the leaf has an emissivity of 085 and
a girl of mass 500 kg jumps off the bow of a 840-kg canoe that is initially at rest if her velocity is 290 ms to the
a 1400kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2400kg suv traveling
a 30 cm x 30 cm parallel plate capacitor has a 20 mm spacing the electric field strength inside the capacitor is 14 x
a 690-kg elevator starts from rest and moves upward for 350 s with constant acceleration until it reaches its cruising
1 a 610 g lead bullet traveling at 310 ms is stopped by a large tree if half the kinetic energy of the bullet is
a girl of mass 550 kg jumps off the bow of a 760-kg canoe that is initially at rest if her velocity is 330 ms to the
gas lanterns used on camping trips have mantles small lacy bags that give off light made from a rayon mesh impregnated
a black wood stove has a surface area of 220 m2 and a surface temperature of 185deg c what is the net rate at which
an engine absorbs 1698 j from a hot reservoir and expels 1205 j to a cold reservoir in each cyclea what is the engines
a particular engine has a power output of 400 kw and an efficiency of 220 assume the engine expels 8500 j of energy in
two stars are at rest 10times1014m apart this is about 10 times the diameter of the solar system the first star is the
a piano tuner stretches a steel piano wire with a tension of 1040n the wire is 0400m long and has a mass of
a steel tank contains 342 g of ammonia gs nh3 with molar mass 170 gmol at a pressure of 113 x 106 and a temperature of