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A star is orbiting an invisible companion once every 2560 days (remember to convert to years). The distance between the star and invisible companion is 8 AU. How massive is the system? Hint: Use Kepler's 3rd Law and give your answer in solar masses.
A 1400 kilogram car coasts on a horizontal road with a speed of 19 m/s. Determine the magnitude of the average net force on the car in the sandy section
The swimmer in the figure below propels himself forward by exerting a 142 N backward force on the water with his hand. He experiences a forward reaction force F of magnitude 142 N. Find the magnitude and direction of the torque exerted on the arm ..
two wooden blocks each of 0.50 kg mass are connected by a string that passes over a very light frictionless pulley. one
An object weighing 340 Newton in air is immersed in water after being tied to a string connected to a balance. The scale now reads 250 Newton, Compute what is the density of the oil
100 m3 /min of a gas mixture containing 1 mol % water and 99 mol % air is cooled at constant pressure of 1 bar from 200 °C to 25 °C. 50 % of the water in the inlet stream is condensed during this process. Calculate the cooling duty of the process ..
A 4.00-kg block is sliding up the plane on a 30.0 degree incline as shown in Fig. 5-5. If the coefficient of kinetic friction between the block and the incline is 0.700, what will be the acceleration of the block if a 50.0-N horizontal force pushe..
a 18.0 -m length of wire consists of 9.0 m of copper followed by 9.0 m of aluminum both of diameter 1.3 mm. a voltage
two stones are thrown simultaneously one straight upward from the base of a cliff and the other straight downward from
A massless, rigid board is placed across two bathroom scalesthat are separated by a distance of 2.00 m. Find the weight of the person
Three positive charges are arranged as shown at the corners of a rectangle. Find the magnitude of the electric field at the fourth corner of the rectangle. The value of the Coulomb constant is 8.98755 x 10^9 N.m^2/C^2. Answer in units of N/C. What..
a light ra reflects from a mirror hanging vertically on a wall in your bathroom, and the ray strikes a particular point on the opposite wall. what is the length L of the room
A plane mirror placed at a distance of 400cm in front of a girl. If the doctor's test card is fixed at 70cm behind the eyes of the girl, what is the distance of the image from the girl?
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