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a planet with a radius of 6.00 x 10^7 m has a gravitational field of magnitude 30.0 m/s2 at the surface. what is the escape speed from the planet?
In a circus act at the Ringling Bros. and Barnum Bailey Circus, a human cannonball was fired from a large cannon with a muzzle speed of 87 km/h. How far from the cannon did he land
One design challenge for a capacitor-powered electric car is that the voltage would change with time as the capacitors discharge. what fraction of energy would still be left
An engine has an efficiency e1. The engine takes input heat QH from a hot reservoir and delivers work W1. The heat rejected by this engine is used as input heat for a second engine.
The ballistic pendulum is a device used to measure the speed of a projectile, such as a bullet. calculate the speed immediately after collision
Water at a pressure of 3.4 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 7.00cm in diameter. The pipes taper down to 2.6 cm in diameter by the top floor, 28m above.
A double slit experiment has two different colors. The second-order bright fringe using 650nmred light is in the same place as the third-order bright fringe of the other color
Two point charges Q1 = +4.10 nC and Q2 = ?2.60 nC are separated by 45.0 cm. What is the potential energy of the pair of charges
A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, each angled 30 from the vertical. what is the mass of the landing craft
A charge of 190 µC is at the center of a cube of edge 75.0 cm. No other charges are nearby. Find the total flux through each face of the cube
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71451 km), What is the period of the spacecraft's orbit
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
A passenger car traveling due east at 53.6 m/s passes a truck traveling due east at 13.4 m/s. What is the frequency heard by the driver of the car
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