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1) A mass m moves such that at time t its position is given by x(t) = b +ct^2 + de^(-kt) , where b, c, d, and k are constants. (a) What is the force on this particle at time t? (b) As t → ∞ what is this force? ($8)
2) A snowboarder with mass 60 kg is sliding up ?a hill with θ = 30° and with kinetic coefficient of friction between the snow and the board of μk= 1/10 (a) if the snowboarder's initial velocity is 10 m/s, how long will it take the board to stop? (b) How far will the board slide in this time? ($8)
3) A baseball is thrown at 50 m/s from a height of 1 meter at an angle θ = 30 . (a) How long will it take the baseball to come back to the 1 meter height?, and (b) at that point, how far in horizontal distance will the baseball have traveled? Neglect air resistance and assume the baseball is not spinning. ($8)
In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great deal during the day, What is the angle of his final position relative to the island
Suppose you added to the single slit an identical slit a distance d=0.25mm away from the first. What happens in the limit that d becomes arbitrarily large
Find the time elapsed before the block B separates from A.
A block of ice with mass 2.00 slides 0.895 down an inclined plane that slopes downward at an angle of 39.5 below the horizontal. what is its final speed
According to the Youth Risk Behavior Surveillance 2001 survey by the Centers for Disease Control and Prevention, 33.4% of the 9th-grade girls and 35.9% of the 12th-grade girls considered themselves overweight. Assume that these percentages are bas..
you push your physics book 1.50 m alone a horizontal tabletop with a horizontal push of 240 n while the opposing force
What are some essential skills for an effective project manager? How can these skills be developed? discussion post must be 300 words.
Suppose on a day when the atmospheric pressure is 101kNm-2 you inflate a spherical balloon to a diameter of 20cm.
suppose that an insulating container of negligible mass contains 0.1 kg of water at a temperature of 19 degrees c. now
In a diffraction experiment to determine the wavelength of light, if L is increased the value of x would be decease or increased or remaine the same?
In a performance test, each of two cars takes 8.0 s to acceleratefrom rest to 28 m/s. Car A has a mass of 1429 kg, and car B has amass of 1876 kg. Find the net average force that acts on(a) car A and (b) car B duringthe test.
a two metal spheres have identical size and contain charges of -6c and 14c. the spheres are touched together and then
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