Physics, 19.09.2020 01:01 graymonky12
You are jogging along Zuma beach when you see a flash of fire up on a cliff, and then you notice the splash
of a cannon ball next to you in the ocean. You instantly estimate from the puff of smoke) that the cannon
was fired a horizontal distance of 80 m from the top of a cliff 40 above your position Based on your
observation of the fiery explosion from the mouth of the cannon (as it was fired), you estimate that the
cannon bal was in the air for 3.0 seconds
What was the muzzle velocity of the cannon,
b. At what angle was it fired,
c. what is the y-component of its velocity just before it impacts the water,
d. and what is its velocity - magnitude and
e direction, just before it impects the water.
Answers: 3
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An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?
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Physics, 22.06.2019 20:00
Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.
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Physics, 23.06.2019 00:30
Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.
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You are jogging along Zuma beach when you see a flash of fire up on a cliff, and then you notice the...
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