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a 96 g bullet is fired into a stationary block of wood m 505 kg the bullet imbeds into the block the speed of the
a 87kg block slides with an initial velocity of 166msec up a ramp inclined at 274 degrees with the horizontal the
a meter stick is rotated about the end labelled 000 cm therefore that the other end of the stick moves during an arc
discuss whether any work is being done by each of the following agents and if so whether the work is positive or
a hiker who weighs 637 n is strolling during the woods and crosses a small horizontal bridge the bridge is uniform
the sun emits electromagnetic waves including light equally in all directions the intensity of the waves at the earths
a weight lifter raises a 1057 n weight a vertical distance of 190 min a time interval of 215 s calculate the power
a boy of mass 487 kg is initially on a skateboard of mass 200 kg moving at a speed of 104 ms the boy falls off the
a 780-kilogram child starts from rest from the top of a frictionless slide that is 54 meters tall the bottom of the
an ideal heat engine operates at a thermal efficiency of 25 when the high temperature reservoir operates at a
two narrow slits are illuminated by a laser with a wavelength of 507 nm the interference pattern on a screen located x
a sound wave of frequency 1440 hz propagating through air at 0 degrees celsius has a pressure amplitude of 170 pa what
a child operating a radio-controlled model car on a dock accidentally steers it off the edge the cars displacement 086
compute the average speed and average velocity of a complete round trip in which the outgoing 250 km is covered at 95
a beam of natural light with an irradiance of 430 wm2nbsp impinges on the first of two consecutive ideal linear
wrongly called for a foul an angry basketball player throws the ball straight down to the floor if the ball bounces
a uniform rod rotates in a horizontal plane about a vertical axis during one end the rod is 600m long weighs 100 n and
trucks can be run on energy stored in a rotating flywheel by an electric motor getting the flywheel up to its top speed
a block of mass 47 kg slides 20 m from rest down an inclined plane making an angle of 24 o with the horizontal if the
the flywheel of a steam engine runs with a constant angular velocity of 150 revmin when the steam is shut off the
a baseball pitcher throws a 44 ms fastball the baseball bat reverses the balls velocity and it leaves the bat at 56 ms
a 120-g rifle bullet is fired by a speed of 380 ms into a ballistic pendulum with mass 60 kg suspended from a cord 700
when light of wavelength 493 nm passes during a single slit of unknown width the diffraction pattern displays a
a charge q is distributed uniformly around a thin ring of radius r the ring is rotating about an axis through its
an electric field is directed out of the page within a circular region of radius r 300cm the magnitude of the electric