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A planet of mass m = 1.15 × 10^24 kg is orbiting in a circular path a star of mass M = 1.65 × 10^29 kg. The radius of the orbit is R = 2.85 × 10^7 km. What is the orbital period (in earth days) of the planet Tplanet?
n object is projected from the surface of the earth with a speed of 1.98×104 m/s. What is its speed when it is very far from the earth
q1. a rectangular conducting loop of wire is approximately half-way into a magnetic ?eld b out of the page and is free
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
Two point charges Q1 = 3.6 µC and Q2 = 8.0 µC are initially very far apart. They are then brought together, How much work does it take to bring them together
q1. imagine a free electron and a free proton held midway between the plates of a charged equivalent plate capacitor.
A wheel with rotational inertia .146 kg-m2 turns through 40 rev as it slows down from an angular speed of 1.5 rad/s to a stop, what is the angular deceleration
A rigid vessel contains ammonia as liquid and vapor in equilibrium at 8 bar with a quality of 0.02. The mass of liquid ammonia is 1000 kg. How much volume does the liquid ammonia occupy
the total volume of a new house is 800 m3. before the heat is turned on the air temperature inside is 10degc and the
A soccer ball is kicked with an initial horizontal velocity of 16.0 m/s and an initial vertical velocity of 18.0 m/s. How far from where it was kicked will the ball land
A hockey player is standing on his skates on a frozen lake when an opposing player skates by with the puck, moving at a uniform speed of 12m/s. How long does it take to catch the opponent
A 700 N car traveling at 25m/s.The breaks are applied suddenly and the car slides to a stop. The average breaking force between the tires and the road is 7100 N.How far will the car slide once the breaks are applied.
A proton is released from rest in a uniform electric field of magnitude 421 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in..
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