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A small ferryboat is 4.00 m wide and 6.00 m long. When a loadedtruck pulls onto it, the boat sinks an additional 4.90 cm into the water. What is the weight of the truck?
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a potters wheel moves uniformly from rest to an angular speed of 0.18 revs in 34 s.a find its angular acceleration in
12-gauge copper wire has a radius of 1.03times10-3m. a what is the resistance of 11.5m of this wire at 20degc? b how
How many square meters of PV would it take to provide 1KW(about 1/3 of the power needed per person for health and comfort)for a world population of 6 billion? If these cells werecrystalline silicon of 200 microns thick( 200x10-6),what is the minim..
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
When a potential difference of 221 V is applied to two plates of a parallel-plate capacitor, the inner surface of the positive plate carries a surface charge density of 40 nC/cm2. What is the spacing between the plates
Starting from rest, a 40 kg body reaches a speed of 8.0m/s in 2s. Calculate the force acting on the body?
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountain, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the easter..
What is the maximum speed with which a 1200 kg car can round a turn of radius 60.0m on a flat road if the coefficient of friction between tires and road is 0.65.
An insulated Thermos contains 138cm3 of hot coffee at 95 °C. You put a 12g ice cube at its melting point to cool the coffee. By how numerous degrees has your coffee cooled once the ice has melted and equilibrium is reached.
A simple pendulum consists of a ball connected to one end of a thin brass wire. The period of the pendulum is 1.25 s. find the change in the period of the heated pendulum
A heat engine takes in 1000 J of energy at 1000 K and exhausts 615 J at 200 K. What are the actual and maximum theoretical efficiencies of this heat engine
If a particle of mass 4.9 kg is moving east at 10 m/s and a particle of mass 19 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair
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