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Q 1. Displacement is which of the following types of quantities?A. vectorB. magnitudeC. DimensionalD. scalarQ2. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration?A. 0.64 m/s2B. 0.78 m/s2C. 0.21 m/s2D. 0.46 m/s2E. 0.97 m/s2Q3. Jeff throws a ball straight up. For which situation is the vertical velocity zero?A. on the way upB. on the way back downC. both a and c are correctD. at the topE. none of the aboveQ4. A railroad train travels forward along a straight track at 80.0 m/s for 1 000 m and then travels at 50.0 m/s for the next 1 000 m. What is the average velocity?A. 65.0 m/sB. 70.0 m/sC. 68.3 m/sD. 61.5 m/sE. 63.7 m/sQ5. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is the average velocity?A. 3.4 m/sB. 1.7 m/sC. 2.5 m/sE. 4.2 m/s4. Zero
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
An electron moves in a circular path perpendicular to the constant magnetic field with a magnitude of 2.00 mT. The angular momentum of the electron about the center of the circle is 5.50 multiplied by 10-25 J•s.
What is a stopping distance
A ferrari race car on the straight road starts from rest, accelerating at 2.00 m/s^2 until it reaches a speed of 20.0m/s. Then the car travels for 20.0 s at the constant speed until the brakes are applied, stopping the truck in a uniform manner in an..
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
Block A in Figure is given an initial velocity of 6 m/s up the incline. Declare of a block on a inclined plane.
A 378 N, uniform, 1.56 m bar is suspended horizontally by two vertical cables at each end. Cable A can support a maximum tension of 502.0 N without breaking, and cable B can support up to 397.0N. You want to place a small weight on this bar. What is ..
An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium and released, undergoing harmonic oscillations on a frictionless surface with period T0. The experiment is then repeated with a mass of 4m. The sub..
With the power supply disconnected, the dielectric material is removed and the potential difference between the plates is measured to be 500 V. What is the dielectric constant of the material that was at first used to fill the gap between the plates.
Assume, instead, that the observer had been moving away from Earth with a speed of 0.80c. How much time would observer have measured for the car to be filled in this case.
What is the horizontal component of velocity
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