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a ball of mass m moving with velocity vivec strikes a vertical wall figure 1 the angle between the balls initial
three athletes are tugging on a ring martha pulls with a force of 150 n in the northerly direction eveylyn pulls with a
a rotating merry-go-round accelerates uniformly from rest to make one complete revolution in 2s if a person sitting on
one end of a uniform rod of length 4l and weight fg is supported by a cable the other end rests against the wall where
a cart is set rolling across a level table at the same speed on every trial if it runs into a patch of sand the cart
a 5 cm tall object is placed 20 cm to the left of a converging lens with focal length of 10 cm1 where is the created
the ultracentrifuge is an important tool for separating and analyzing proteins because of the enormous centripetal
the mass of a certain planet is 615times1023 kg and its radius is 2535 km what is the acceleration due to gravity on
a steel ball of mass 05 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 ms
the filament of an incandandescent light bulb is a very thin solid cylindrical shape with a total length of 450 mm and
a bullet of mass m and speed v passes completely through a pendulum bob of mass m the bullet emerges with a speed v2
two thermal reservoirs hot th 124degc and cold tc 100degc are put into thermal contact by a lead slab the slabs
high-speed stroboscopic photographs show that the head of a 260 g golf club is traveling at 54 ms just before it
planet x is 347 times more massive than earth and its radius is 103 times earths radius how many times more would you
a tennis player receives a shot with the ball 00600 kg traveling horizontally at 560 ms and returns the shot with the
a satellite is in a circular orbit around the earth the period of the satellite is 254 hr calculate the radius of the
a skier starts from rest at the top of a hill that is inclined at 102deg with the horizontal the hillside is 150 m long
a 290 kg child on a 100 m long swing is released from rest when the ropes of the swing make an angle of 310deg with the
the task is to design a rocket which will accelerate a payload of mas 100 kg from a velocity of 0 ms to 6000 ms in
water is flowing in a horizontal pipe of variable cross section where the cross-sectional area is 110times10-2 m2 the
a rectangular fish tank measures 25 cm by 70 cm by 40 cm high the tank is filled with water to a depth of 37 cmwhat is
a swimming pool is 50 m long by 23 m wide and is less deep at one end than at the other the depth at the shallow end is
a washer is constructed from soft steel density p 79bull103 kgm3 its inside and outside dimensions are 200 cm and 330
an early method of measuring the speed of light makes use of a rotating slotted wheel a beam of light passes through
a pulsar is a rapidly rotating neutron star that emits a radio beam the way a lighthouse emits a light beam we receive