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A 750kg research submarine lies at the bottom of a lake. Its volume is 3.1*10^5cm^3. How much force is needed to lift it by a cable?
A horizontal, 10 - m plank weighs 100N. It rests on two supports that are placed 1.0m from each end. What is the torque of the weight of the plank
What is total distance the bird travels by trains collide
Use 9.81 for the magnitude of the acceleration due to gravity.
A small car is pushing a larger truck that has a dead battery. The mass of the truck is twice as large as the mass of car. At one instant of time the car and truck both have an acceleration of 3.5 m/s2. Which of the following statements is true? D..
Zinc has a work function of 4.30 eV. A 4.80 eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron
A bat flies toward a wall at a speed of 5.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 29.0 kHz. What frequency does the bat hear in the reflected wave
A 1500-kg car moving east at 28.00m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
You are piloting a small plane that can maintain an air speed of 136.5 kt (knots, or nautical miles per hour) and you want to fly due north (azimuth = 000°) relative to the ground.
a horizontal circular platform rotates counterclockwise about its axis at the rate of 0.805 rad/s. You, with a mass of 67.3 kg, Calculate the total angular momentum of the system
A U-shaped tube open to the air at both ends contains some mercury with a density of 13,600 kg/m3. Calculate the gauge pressure at the water-mercury interface
If an inductor carrying a 1.40 A current stores an energy of 0.250 mJ, How much energy does the same inductor store if it carries a 2.9 A current
To fill a child's inflatable wading pool you use a garden hose with a diameter of 2.9 cm. How long will it take to fill the pool to a depth of 19 cm if it is circular and has a diameter of 2.4 m
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