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a hot air balloon is rising upward with a constant speed of 10 ms when the balloon is 4 m above the ground the
a diver springs upward with an initial speed of 7 ms from a diving board that is 2 m above the watera what is the
earthquakes generate sound waves inside earth unlike a gas earth can experience both transverse s and longitudinal p
to sell her plan to the city council the architect wants to build a model to a scale which is one-sixteenth actual size
two point charges q1 450 nc and q2 220 nc are separated by 450 cma what is the electric potential at a point midway
an x-ray tube is similar to a cathode-ray tube electrons are accelerated to high speeds at one end of the tube if they
a typical microwave oven has a power consumption of about 1200 w estimate how long it should take to boil a cup of
the force of attraction between a -400 c and 108 c charge is 400 n what is the separation between these two
a wire of length l has a resistance r if it is cut into three equal lengths that are placed side by side and tightly
a rocket launched at 70 degrees to the horizontal has a constant net acceleration of 8 ms2 along this direction for 65
amorosa who is on a balcony 40 m above the ground throws the key to her heart at 37 degrees below the horizontal to
three resistors 26and 12 are in parallel connected across a dc voltage source of the total current through this circuit
a uniform 200 chain 200 long supports a 550 chandelier in a large public buildinga find the tension in the bottom link
condense 98000 lbshr of atmospheric pressure steam which has a latent heat of vaporization of 970 btulb the design
a playground is on the flat roof of a city school 5 m above the street below see figure the vertical wall of the
two capacitors c1 280 microf and c2 410 microf are connected in series and a 180-v battery is connected across thema
a student bikes to school by traveling first 110 north then 0300 west and finally 0100 south if a bird were to start
a single mass m1 42 kg hangs from a spring in a motionless elevator the spring is extended x 130 cm from its
entrance and exit ramps for freeways are often circular stretches of road as you go around one at a constant speed you
a gray kangaroo can bound across a flat stretch of ground with each jump carrying it 11 from the takeoff pointa if the
an object moves with constant acceleration 445 ms2 and over a time interval reaches a final velocity of 124 msa if its
a trained dolphin leaps from the water with an initial speed of 12 the trainer releases the ball at the horizontal
in a game of basketball a forward makes a bounce pass to the center the ball is thrown with an initial speed of 42 at
in 2004 baseball player adam dunn hit the longest home run ever hit in great american ballpark in cincinnati he hit a
a trained dolphin leaps from the water with an initial speed of 102 the trainer releases the ball at the horizontal