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You are an astronaut, and you observe a small planet to be spherical. After landing on the planet, you set off, walk straightahead, and find yourself returning to your spaceship from theopposite side after completing a lap of 25 km. You hold a hammerand a falcon feather at a height of 1.4 m, release them, andobserve them to fall together to the surface in 29.2s. What is the mass of the planet?
A rotating water pump works by taking water in at one side of the rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120m starts from rest and accelerates at 30.50 rad/s2.
a tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.33 ms. the car is
Calculate the electrical potential at the center of the square described as follows: Four charges are placed at the corners of a 20 cm square
A parallel plate capacitor has plates each of area 100 cm^2, what is the average charge density on the positive plate?
Iterates until convergence is reached (the previous guess for the velocities is not significantly different from the current guess and calculates the friction factor for the current guess of velocities.
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
Three concentric uniformly charged isolating shells (hollow spheres) of radii 6cm, 10cm, and 20cm each carry a charge. The smallest shell carries 3nC, the medium 4nC, and the largest shell 5nC. Here, concentric means that all three shells share th..
nitrogen dioxide is formd in the following reaction n o2 no2 the equilibrium constant k at 25 c is
A roller coaster shown below is built in your town. The radius of the circular part is 20 meters. As a physics student, you are invited to take the first ride. Find the speed of the car at the top of the circle
A 2.00-mol sample of hydrogen gas is heated at constant pressure from 302 K to 414 K. Calculate the energy transferred to the gas by heat
Use the worked example above to help you solve this problem. A cylinder contains2.15mol of helium gas at19.0°C. What is the average kinetic energy per molecule
A 12 turn loop of wire in the plane of the whiteboard has adiameter of 46cm and has a clockwise current of 7.32A. A magneticfield of .0453 T is directed from the floor to the ceiling.
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