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An elevator lifts a person 24.4 m with a force of 300. N in 15.0 s. What is the power of the elevator? a)300. W b)488 W c)7,320 W d)101,000 W
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Who invented the cellphone
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You drop a 30 g pebble down a well. You hear a splash 2.7 s later. Ignoring air resistance, how deep is the well? Assume g = 9.8 m/s2. a)0.79 m b)36 m c)71 m d)790 m
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Assuming no air resistance, how far will a 0.0010 kg raindrop have fallen when it hits the ground 30.0 s later. Assume g = 9.8 m/s2. a)294 m b)4410 m c)8820 m d)44,000 km
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What is the weight in newtons of a 2.45 kg laptop computer? Assume g = 9.8 m/s2. a)0.25 N b)4.0 N c)24 N d)240 N
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How much mass energy could be obtained from the complete conversion of a 235 g hamburger? a)7.05 x 107 J b)7.05 x 1010 J c)7.57 x 1011 J d)2.12 x 1016 J
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Can an object be increasing in speed as it's acceleration decreases?
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What is the kinetic energy of an 80.0 kg football player running at 6.0 m/s? a)240 J b)480 J c)1400 J d)2900 J
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A rocket moves upward, starting from rest with an acceleration of 29.4 m/s^2 for 3.98 s. it runs out of fuel at the end of 3.98 but does not stop. how high does it rise above the ground
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How high has a 45 g golf ball been driven if it has a potential energy of 2.06 J?
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How does the position of a hanging wall relative to the footwall give evidence of the stress placed on a rock layer?
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A sample of gold has a mass of 38.6 grams and a volume of 2 cm3. What is the density of gold
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Which of the following statements regarding processing is true?
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A bobsled has a momentum of 1500 kg*m/s to the south. Air resistance reduces its momentum to 750 kg*m/s to the south. What impulse is applied to the bobsled by the air resistance?
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How do convection currants affect the movement at the Mariana Trench?
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How do climate differences affect the movement at the Mariana Trench
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What is its time interval between the release of the ball and the time it reaches its maximum height? The acceleration of gravity is 9.8 m/s 2 and the maximum height is 3.8 m .
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Last question for now I promise !! I'm pretty sure the equation you have to use is Fgrav=(Gm1m2)/d2 but I'm not getting the correct answer
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A 40 kilogramstudent runs up a staircase to a floor that is 5.0 meters higher than her starting point in 7.0 seconds. the student's power output is
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