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A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers and it is found to be 795 m. In the kitchen of the spaceship the chef sets the oven timer for 1.40 hours to make roast beef. How much time does the roast beef spend in the oven when measured by external observers at rest?
A tobagan with a mass of 15kg is being pulled with an applied force of 45N at an angle of 40 degrees to the horizontal. What is the acceleration if the force of friction opposing the motion is 28N.
you look over at a really expensive diamond fish bowl. the fish in the bowl is at an angle of 75 to the normal. what angle does light exit the fish bowl
A hydraulic system uses a large piston with a 1-m radius and a small piston with a 0.10-m radius. If the smaller piston is displaced two meters then how far is the larger one displaced
Communications satellites are placed in a circular orbit where they stay over a fixed point on the equator. Find average speed of the satellite in geosynchronous orbit
A circular disk, centered at the origin of a coordinate system, is rotating at a constant angular velocity ?0. In Cartesian coordinates, what is the velocity vector of the point P located at the cartesian coordinate (1,1).
What average force athletes legs apply on a ground
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. What are your reaction time
A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. How many centimeters behind the glass
Car 1 has a mass of m1 = 65000 kg and a velocity of v01 = +0.80 m/s. Car 2 has a mass of m2 = 92000 kg and a velocity of v02 = +1.2 m/s, overtakes car 1 and couples to it. Determine the velocity of their center of mass (a) before and (b) after the co..
If the bee walks on the stick with a speed of 1.44 cm/s relative to the still water, what is the speed of the stick relative to the water
A 60.0g ice cube can slide without friction up and down a 33.0 slope. what distance will it travel up the slope before reversing direction
The diameter of the aluminum cylinder is measured to be: (4.935 ±0.003)cm. The hanging mass (paint bucket and 5kg) for a Mechanical Equivalent of Heat experiment is recorded as (5.2977 ±0.0002)kg. Calculate the work done cranking the aluminum cylin..
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