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A simple pendulum has a length L and a mass m. At its highest point, the pendulum mass is 0.25L above its lowest point. What is the speed of mass when it is at its lowest point? Express your answer in terms of m, L, and g.
Two sources have sound levels of 104dB and 62.3 dB. what is their combined intensity
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
A 4200 kg truck is parked on a 24° slope. How big is the friction force on the truck
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
Two speakers face each other and radiate coherently and in phase. The speakers are separated by a distance of 5.50 m, What is the wavelength of the sound
Coefficient of linear expansion for aluminium
How far must it now sail to reach its original destination. find the potential energy of the system.
A model-train transformer plugs into 120-V ac, What voltage is present across the tracks
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.0 inches. calculate the thickness of the shell
To get to a concert in time, a harpsichordist has to drive 120 miles in 2.09 hours. What is his average velocity for the entire trip
Three resistors with values 1.2 , 2.3 , and 5.0 , respectively, are connected in parallel in a circuit with a 5.0 V battery, what is the pwer delivered to the 5 ohm resistor
A 92-kg fullback, running at 5.0 m/s, attempts to dive directly across the goal line for a touchdown. What is the velocity of the football players after the collision
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