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As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. The Body Mass Measurement Device on Skylab, a 1970s space station, had a spring constant of 606N/m . The empty chair oscillated with a period of 0.869s .
What is the mass of an astronaut who oscillates with a period of 2.25 when sitting in the chair?
An object is placed in front of a concave mirror with a 24.1-cm radius of curvature. A real image twice the size of the object is formed. At what distance is the object from the mirror
If you had an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating disk 3.50 m in diameter. The elevator is raised and lowered by turning the disk, and the cable does not slip on the rim ..
A space vehicle is coasting at a constant velocity of 15.1 m/s in the +y direction relative to a space station. find the direction of the vehicle's velocity relative to the space station
At one point in a pipeline the water's speed is 3.00m/s and the gauge pressure is 5.00x10^4Pa. Find the gauge pressure at a second point in the line
Typical large values for electric and magnetic elds attained in laboratories are about 1:0104 V/m and 2.0 T. Determine the energy density for each eld
A ball is kicked with initial velocity of 14.9 m/s in the horizontal direction and 15.7 in the vertical direction. At what speed does the ball hit the ground
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83, How much is the force of friction on the dresser
The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.3 m/s . Initially, the car is also traveling at a speed 19.3m/s, How much time is required for the car to pass the truck
If a car traveling at 62 km/h will skid 22 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
A soccer ball is kicked with an initial speed of 28 m/s at an angle of 22° with respect to the horizontal. Find the maximum height reached by the ball
A block of wood weighing 2N slides down a 37^0 inclined plane starting from rest and reaching 2 m/s. What is the kinetic coefficient of friction between the block and slide
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