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A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is its angular speed at the instant it goes through an angular displacement of 4.2 rad?
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Question: A point charge q1 = +2.40 μC is held stationary at the origin. A second point charge q2 = -4.30 μC moves from point a (x = 0.150 m, y =0) to point b (x = 0.250 m, y = 0.250 m). What is the electric potential ...
A 0.900 kg hammer is moving horizontally at 9.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact. (s) What was the average force exerted on the nai ...
Question: Part A: What focal length does the lens need? Assume that it is a thin lens. Part B: How far should you place the lens from the slide? The response must be typed, single spaced, must be in times new roman font ...
Question: A solid disk of mass m1 = 9.6 kg and radius R = 0.24 m is rotating with a constant angular velocity of ? = 30 rad/s. A thin rectangular rod with mass m2 = 3.4 kg and length L = 2R = 0.48 m begins at rest above ...
Question: Suppose an earthquake shakes you with a frequency of 9.5 Hz as it passes and continues on to another city 75 km away, which it reaches in 15 s. What is the wavelength of the earthquake, in meters? The response ...
Question: The resistivity of a wire is given by R=pL/A. Where p is the resistivity of the material, L is the length of the wire and A is the cross sectional area of the wire. a) If the diameter of the wire is .35mm calcu ...
A ball rolls off a table with a horizontal velocity of 5 m/s if takes 0.6 seconds for it to reach the floor a) what's the vertical component of the ball's velocity just before it hits the floor b) what's the horizontal c ...
Question: Rotational Kinetic Energy and Conservation of Energy Ranking Task The five objects of various masses, each denoted m, all have the same radius. They are all rolling at the same speed as they approach a curved i ...
Question: The total translational kinetic energy of the molecules of a sample of gas at 421 k is 3.95x10^4j. How many moles does the sample comprise? Find the average translational kinetic energy of a single molecule. Th ...
Question: A rock climber stands on top of a 60 m high cliff hanger a pool of water. He throws two stones vertically downward 1.0 s apart and observes that they cause a single splash. The initial speed of the first stone ...
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