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Consider a star of mass M=10Msun, composed entirely of fully ionized C-12. Its core temperature is 6*10^8K. a. What is the mean particle mass mbar in units of m(hydrogen)?
A converging lens with a focal length of 12.2cmforms a virtual image 8.50mm tall, 16.6cm to the right of the lens. Determine the position of the object
A 52.0 kg ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.0 turns each second. The distance from one hand to the other is 1.50 m. Biometric measurements indicate that each hand characterist..
At a construction site, a 63.0 bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 83.0 box on the horizontal roof. The cable pulls horizontally on the box, and a 45.0 bag of g..
The construction of a flat rectangular roof (5.15 m × 7.44 m) allows it to withstand a maximum net outward force of of 2.33 × 104 N. At what wind speed will this roof blow outward
A 73.0-kg parachutist falling vertically at a speed of 6.60m/s impacts the ground, what is the average force exerted on the parachutist by the ground
Water falls without splashing at the rate of 0.210 L/s from a height of 3.90m into a 0.590 kg bucket on a scale. If the bucket is originally empty, what does the scale read 4.00 s after water starts to accumulate in it.
A 23-g lead bullet is shot with a speed of 320 m/s into a wooden wall. Assuming that 60% of the kinetic energy is absorbed by the bullet as heat (and 40% by the wall), what is the final temperature of the bullet
A point charge with q1 = +1.9 C is located at x = ?3.0 m, y = 0, and a second point charge with q2 = +6.5 C is at x = +1.0 m, y = +2.0 m. (a) What is the force exerted by q1 on q2? magnitude N direction ° counterclockwise from the +x-axis (b) What..
A 3.18-nF parallel-plate capacitor is charged to an initial potential difference ?Vi = 100 V and is then isolated. How much work is required to withdraw the porcelain sheet
An object of 30 kg mass is pulled with a force 1.2 * 10^2 N at angle ?=30 degree over the distance 5 meter.If the coefficient of friction is 0.2, what is workdone by the force of friction
You drive 96km/h east for 29min , then 76km/h north for 46min . Let the +x-axis point east and the +y-axis north. Find your average speed for the entire trip
Starting with the left-most column, populate the boxes from left to right without skipping empty boxes. Ties should be grouped in the same box
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