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A soap box derby race car has a speed of 2 m/s as it passes the first check point and has a final speed of 20 m/s asit passes the second chech point. If 15 seconds of time elapses between checkpoints, what was the acceleration of the soap box car?
A ski gondola is connected to the top of a hill by a steel cable of length 680 m and diameter 1.5cm. As gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along cable. It is observed that it took 14 s for the p..
Joey, whose mass is 39kg, stands at rest at the outer edge of the frictionless 230kg merry-go-round, 2.2m from its center. What is the final angular speed of the merry-go-round
A uniform horizontalboard, 2.30m long, is in static equilibrium; it is supported 0.50m from its left end, while a vertical force of 21.0N is applied at the right end. How much force must be supplied by the support
Even as exploring a sunken ocean liner, principal researcher found the absolute pressure on the robot observation submarine at the level of the ship to be about 413 atmospheres. The density of seawater is 1025kg/m^3.
A flight attendant pulls her 65N flight bag a distance of 388m along a level airport floor at a constant velocity. The force she exerts is 38 N at an angle of 51° above horizontal.
a small 98.2 g cart is moving at 1.01 ms on an air track when it collides with a larger 1.15 kg cart at rest. after the
An empty parallel plate capacitor is connected between the terminals of a 2.8-V battery and charged up, what is the new voltage between the plates of the capacitor
An object is placed 19 cm to the left of a converging lens of focal length 25 cm, Find the position and magnification of the final image
What process or occurrence can create magnetic fields, Explain Coulomb's Law and how it relates to electric current
A coil has an inductance of 7.0 mH, and the current in it changes from 0.16 A to 1 A in 0.15 s. Discover the magnitude of the average induced emf in the coil during this period.
A 15 kilogram block rest on a level frictionless surface and it is attached by a light string to a 5.0 kilogram hanging mass, determine the tension on the connecting string
A photon is emitted when a hydrogen atom undergoes a transition from the n = 10 state to the n = 4 state. Calculate values for the following. (a) the wavelength nm (b) the frequency Hz (c) the energy of the emitted photon eV
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