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A truck tractor pulls two trailers, one behind the other, at a constant speed of 100 km/h. It takes 0.555s for the big rig to totally pass onto a bridge 450 m long. For what duration of time is all or part of the truck-trailer combination on the bridge?
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture? °C, What is the final temperature of the water after the ice has melted
consider a mass of 20kg on the left and another 10kg on the right connected by a rope and being pulled to the right
A 10 cm x 10 cm x 10 cm block of steel (density of steel =7900 kg/m3) is suspended from a spring scale. The scaleis in newtons. What is the scale reading if the block is in air
If you charge a capacitor C1 with a battery V, then disconnect the capacitor and use it to charge 3 capacitors C2-4 connected in series, what is the potential difference across each of the four capacitors?
questiona machine part consists of a thin 40.0 cm long bar with small 1.15 kg masses fastened by screws to its ends.
A tortoise can run with a speed of 0.10m/s, and a hare can run 20 times as fast. What is the length of the race
A capacitor is connected across an ac source that has voltage amplitude 61.0 A and frequency 81.5 Hz. What is the phase angle ? for the source voltage relative to the current? Does the source voltage lag or lead the current?
A jet of water squirts out horizontally from a hole near the bottom of the tank, Assume that x = 1.22 m and y = 1.55 m. What is the speed of the water coming out of the hole
What is the energy of a single photon of red light with a wavelength of 633 nm?
How much work did the movers do pushing a 160 kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
a rod 16.0 cm long is uniformly charged and has a total charge of -21.0 microc. determine the magnitude and direction
A massless string runs around two massless, frictionless pulleys. An object with mass m = 12.20 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at the constant..
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