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A 2000-kg car travelling at an initial speed of 50 km/h skids to a stop with a constant acceleration.
If the coecient of kinetic friction between the locked tires and the road is 0.50. Determine the length of the skid marks.
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Question: A small, 300 g cart is moving at 1.90 m/s on an air track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. Part A: What is the speed of the large c ...
Question: Part A: The electric potential along the x-axis is V =200x2V, where x is in meters. What is Ex at x =0m? Express your answer as an integer and include the appropriate units. Part B: What is Ex at x =3m? Express ...
An ideal gas of molecules (of mass 3.3 x 10 -27kg) is at temperature 400 K and density 0.1 kg/m3. The gas is confined within a cube of side length 2 m. What is magnitude of the average force experienced by one of the wal ...
Question: A student standing in a canyon yells "echo," and her voice produces a sound wave of frequency of f = 0.56 kHz. The echo takes t = 3.5s to return to the student. Assume the speed of sound through the atmosphere ...
Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 2.55 µC. (a) What is the potential difference between the plates? (b) If the charge is kept constant, what will be the po ...
Question: A stretched spring stores 3.4 J of energy. How much energy will be stored if the spring is stretched three times as far? The response must be typed, single spaced, must be in times new roman font (size 12) and ...
Question: The position of a particle moving along an x axis is given by x = 14.0t2 - 3.00t3, where x is in meters and t is in seconds. Determine (a) the position, (b) the velocity, and (c) the acceleration of the particl ...
Question: Oppositely charged parallel plates are separated by 5.31 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? N/C (b) What is the ma ...
Question: A sensitive gravimeter at a mountain observatory finds that the free fall acceleration is 0.0075 m/s^2 less than that at sea level. What is the observatory's altitude? The response must be typed, single spaced, ...
Question: An object is 40 cm in front of a concave mirror with focal length of 20 cm. what is the postition of the image using ray tracing? The response must be typed, single spaced, must be in times new roman font (size ...
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