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A model airplane flies ina horizantal circle at the end of a50 meter long control wire, with a speed of 40 m/s. The plane has amass of 1.25 kg. Calculate the tension in the wire if the planes wings make a constant 15 degrees angle with the horizontal.
two satelities s1 and s2 revolve round a planet in coplanar circular orbits in the same sense. their periods of
A 800 kg car is travelling forwards at + 25 m s?1 along a level road. What is the acceleration during skidding
A Carnot engine extracts 550 J of heat from a high-temperature reservoir during each cycle, compute the efficiency of the engine
A 47.3-cm diameter disk rotates with a constant angular acceleration of 2.70 rad/s2. It starts from rest at t = 0, Find the angular speed of the wheel
A cube of mass m = 7.15 kg is placed on an inclined plane of mass M = 6.67 kg, which makes an angle ? = 48.30° with the horizontal. What is the normal force on the inclined plane from the table underneath it
Consider a hot-air balloon. The deflated balloon, gondola, and two passengers have a combined mass of 315 kg, Then find the temperature of the air inside the balloon
An ocean liner leaves New York City and travels 18.0° north of east for 232 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the following directions.
A golf ball is hitwith an initial velocityof 60.0 m/s at an angle of 30 degress abovethe horizontal. How far does it travel
A white billiard ball with mass mw = 1.57 kg is moving directly to the right with a speed of v = 3.42 m/s, What is the final speed of the black ball
What is phase change as the light is reflected from the top
A 70 kg human body typically contains 140 g of potassium. Potassium has a chemical atomic mass of 39.1 u and has three naturally occurring isotopes.
Two forces, of magnitude F1 = 80.0 N and F2 = 45.0 N, act in opposite directions on a block which sits atop a frictionless surface. Find the work W1 done on the block by the force of magnitude F1= 80.0 N as the block moves from xi = -1.00 cm to xf =..
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