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Imagine a complete, fully-fueled Falcon9 rocket is in space, at some position between Earth and the moon. What are the two physics concepts that are responsible for rocket propulsion? Can the rocket be launched to a high velocity when launched in the vacuum of space, similar to when it is launched from Earth's surface? Can a rocket's speed ever exceed the speed of the exhaust gases that come from burning fuel? Imagine launching that rocket from Earth's surface, and, after some time, the rocket runs out of fuel while its nose is directed away from Earth. Will the rocket fall back to Earth, establish orbit, or proceed further into space? Explain your answers.
A spring with spring constant 36N/m is attached to the ceiling, and a 5.1-cm-diameter, 1.3kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
Large parallel conducting plates, each with area 4.0 m2, are separated by 0.06 m. The plates are connected to the terminals of a 12-volt battery. How much total charge is on the positive plate
Two cars leave a stoplight, one 0.5128 s before the other. The second car accelerates with twice the acceleration of the first. What is the ratio of their speeds at that instant
Explain how a mercury thermometer works. Include: What physical principle is at play? What factors affect the physical principle?
A 5000 Ω resistor and a 50 μF capacitor are connected in series at t=0 with a 6 Volt battery. Find the maximum charge stored on the capacitor
Assume that there is a very beautiful ornate crown, supposedly made of solid gold, how would you determine its density
A 7000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs, Find the car's initial speed
An airplane wing is designed so that the speed of the air across the top of the wing is 299 m/s, What is the lifting force on a wing of area 21.0 m2
Starting from t = 0, what is the first time (in seconds) that the y value will be A/2?
Two 2.50-cm-diameter disks spaced 2.00mmapart form a parallel-plate capacitor. The electric field between the disks is 4.60×105V/m. What is the voltage across the capacitor
Blood is pumped from the heart at a rate of 5.0 L/min into the aorta (of radius 1.0 cm). Determine the speed of blood through the aorta?
A diver makes 2.5 revolutions on the way from a 9.0-m-high platform to the water. find the diver's average angular velocity during a dive
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