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A cable used to lift heavy materials like steel I-beams must be strong enough to resist breaking even under a load of 2.1 x 106 Newton. For safety, the cable must support twice that load.
(a) Obtain what cross-sectional area should the cable have if it's to be made of steel?
(b) Obtain by how much will a 7.0 meter length of this cable stretch when subject to the 2.1 x 106 N load?
The gravitational force exerted on a baseball is 2.11 N down. A pitcher throws the ball horizontally with velocity 15.0 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 174 ms. The ball starts from rest.
A 0.450kg rock is dropped 14.0m into 3.0kg of water. If all the rock's kinetic energy is converted to thermal energy in the water, what's the water's temperature increase
Laser beam with wavelength 632.8 nm is aimed perpendicularly at opaque screen with two identical slits on it, What are the double slit characteristics (slit width, slit separation)
the rotating loop in an ac generator is a square 25 cm on each side with 320 turns of wire in the loop. it is rosted at
a 5.45-kg ball hangs from the top of a vertical pole by a 2.19-m-long string. the ball is struck causing it to revolve
A uniform 20.0 kg chain 2.00 m long supports a 55.0 kg chandelier in a large public building. Find the tension in the bottom link of the chain
A 1050-kg sports car is moving westbound at 15.0 m/s on a levelroad when it collides with a 6320-kg truck driving east on the sameroad at 10.0 m/s. At what speed should the truck have been moving so that it andcar are both stopped in the collision
A student at another university repeats the experiment you did in lab. Her target ball is 0.860 m above the floor when it is in the target holder, What is the kinetic energy (in joules) of the target ball just after it is struck
Light from an argon laser strikes a diffraction grating that has 5330 grooves per centimeter. Determine the wavelength of the laser light
To practice Problem-Solving Strategy 5.2 Dynamics problems. A 30.0kg- box is being pulled across a carpeted floor by a horizontal force of 230N, What is the acceleration of the box
The rotational spectrum of the HCl molecule contains lines with wavelengths of 0.0604, 0.0690 ,0.0804 ,0.0964 , and 0.1204 mm. What is the moment of inertia of the molecule
The distance between two successive maxima of a transverse wave is 1.20m. Eight crests, or maxima, pass a given point along the direction of travel every 12.0s. calculate the wave speed.
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