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A rocket in outer space has a payload of 4530.0 kg and 1.597·105 kg of fuel. The rocket can expel propellant at a speed of 3.300 km/s.
Assume that the rocket starts from rest, accelerates to its final velocity, and then begins its trip. How long will it take the rocket to travel a distance of 3.82 ·105 km (approximately the distance between Earth and Moon)?
Assume that positive -axis is directed toward the direction of motion of cart 2.
A person stands in a stationary canoe and throws a 5.22 kgstone with a velocity of 8.20 m/s at an angle of 34.0 degrees above the horizontal. find the horizontal recoil velocity (magnitude and direction) of the canoe
An engine with an output of 247.0 W has an efficiency of 36.0 %. It works at 9.00 cycles/s. How much heat is rejected each cycle
A 2.0 kg, 30-cm-diameter disk is spinning at 300 rpm. How much friction force must the brake apply to the rim to stop it in 3.0 s? find the force by the definition of torque
A hot air balloon has just lifted off and is rising at the constant rate of 1.30 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. how much time does it take for the camera to reach her
A base on Planet X fires a missile toward an oncoming space fighter. The missile's speed according to the base is 0.81 c. How fast is the space fighter traveling relative to Planet X
A casette player is said to have a signal-to-noise ratio of 58 dB, whereas for a CD player it is 95 dB. What is the ratio of intensities of the signal and the background noise for each device?
A space traveler weighs 535 N on earth. What would the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth.
a boat takes 3.00 hrs to travel 25.0 km down a river then 6.00 hrs to return. how fast is the river moving
A small spherical mass of 8.25 × 10-2 kg and charge of q2 = - 0.40 µC hangs from a thread. What is the tension in the thread
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. What is the current coming from the wall socket
Robin hood aims a 500 g arrow at a 2 kg bird perched on a tree. The arrow is released with a speed of 40 m/s at an angle 30 degrees to the horizon. How far from the tree base do the bird and arrow land
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