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a spring gun projects a golf ball at an angle of 45 degreesabove the horizontal the ball has a horizontal range of
a yo-yo has a rotational inertia of 930 gcm2 and amass of 110 g its axle radius is29 mm and its string is 130 cm long
if a physicist designs a circuit to operate at room temperature where the 100komega resistor carries out a current of 1
a 420-kg boy riding a 150-kg skateboard at a velocity of 550ms across a level sidewalk jumps forward to leap over a
a step-up transformer has 50turns on the primary coil and 500 turns on the secondary coil if this transformer is to
the current in an rl circuitincreases to 75 of its final value 229 s after the switch is closeda what is the time
an airplane is flying in a horizontal circle at a speed of 480kmhr banked for this turn the wings of the plane
a uniform cable of weight whangs vertically downward supported by an upward force ofmagnitude wat its top end1 what is
a 10-kg bucket is lowered by a rope in which there is 63n oftension what is the acceleration of the
a horizontal force of 280 nis exerted on a 20 kg discus as it is rotated uniformly in ahorizontal circle at arms length
a plane flies at 195 times thespeed of sound its sonic boom reaches a man on the ground 100 minafter the plane passes
it is common to see birds of preyrising upward on thermals the paths they take may be spiral-likeyou can model the
a 1 000-v battery a 3 000-w resistor and a 050-micro fcapacitor are connected in series with a switch the capacitor
a wreaking ball is hanging at rest from a crane when suddenly the cable breaks the time it takes for the ball to fall
a particular coal-fired electric power station uses75x109 kg of coal per year to produce 950 mw ofelectrical power the
a half-infinite well has an infinitely high wall at the origin and one of finite height u0 at x l like the finite well
a projectile is shot from the edge of a cliff h 105m above ground level with an initial speed of v0135 msat and angle
a roller coaster car crosses the top of a circular loop-the-loop attwice the critical speed what is the ratio of the
the third-order fringe of 610nm light is observed at an angleof 18 degrees when the light falls on two narrow slits how
the earth is nearly three times the distance from the sun as the planet mercurynbsp how many times more intense is the
saturn has an equatorial radius of 600 10 7 m and a massof 567 10 26 kga compute the acceleration of gravity at the
a wire has strength 6700n and is tied to two posts in the ground 70m apart if the wire is broke at the exact center by
an ambulance with a siren emitting a whine at 1500 hz overtakes and passes a cyclist pedaling a bike at 244 ms after
a 49 kg block is initially at rest on a horizontal frictionlesssurface when a horizontal force in the positive
the filament in an incandescent light bulb is made fromtungsten the light bulb is plugged into a 60 v outlet and draws