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A sign weighing 498 N is suspended at the end of a uniform rod 4.04 m long weighing 663 N as shown below. What is the tension in the support cable if it makes an angle of 43.3 deg with the support rod?
Think about a communications satellite in geosynchronous orbit. It sits approximately 35,786 kilo meter above the Earth's equator.
The helium-neon laser you have used in this lab produces photons with an wavelength of 632.8 nm at a power of 3 milliwatts. How many photons are emitted from the laser every second
A block with mass of .6 kg has an initial speed of 4 m/s and slides along a horizontal surface with a kinetic frictional force of 700 N. How far will the spring be compressed
An airplane has a mass of 2.6 x10^6 kg, and the air flows past the lower surface of the wings at 95m/s. If the wings have a surface area of 1200m2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the air?..
Suppose that three astronauts outside a spaceship decide to play catch. All three astronauts have the same mass and are equally strong. How long will the game last
Multiple-Concept Example 11 reviews the concepts that are important in this problem. What is the radius of a hydrogen-filled balloon that would carry a load of 4390 N
A bumper car with mass m1 = 129 kg is moving to the right with a velocity of v1 = 4.50 m/s. A second bumper car with mass m2 = 86.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Suppose the surface..
An object weighs 302 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 220 N. When it is immersed in oil, it weighs 257 N. what is the density of the object.
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.90 m/s at an angle of 23.0° below the horizontal. Find the height from which the ball was thrown
A spring with a constant k of 30 N/m is stretched a distance of 20 cm (0.20m) from its original unstretched position
The drive propeller of a ship starts from rest and accelerates at 3.00 10-3 rad/s2 for 2.05 103 s. Find the total angular displacement of the propeller
Two narrow slits 54?m apart are illuminated with light of wavelength 510nm, What is the angle of the m=2 bright fringe in radians
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