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Determine the speed at which Superman (mass=79.0 kilogram) must fly into a train (mass = 19186 kilogram) traveling at 85.0 kilometer per hour to stop it.
Running into the train at that speed would severely damage both train and passengers. Find the minimum time Superman must take to stop the train, if the passengers experience an average horizontal force of 0.580 their own weight.
Determine how far does the train then travel while being slowed to a stop?
In a head-on collision, a car stops in 0.3s from a speed of 30 m/s. What is the force applied to the driver by his seat belt during the collision
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
how many electrons should be removed from an initially uncharged spherical conductor of radius 0.200 m to produce a
Light at wavelength 589 nm from a sodium lamp is incident perpendicularly on a grating with 40900 rulings over width 82 mm
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
A .005 kg block having a velocity of 500 m/s hits a 5 kg wooden block at rest on a horizontal at an angle of 30 degrees from the horizontal
A pulley 18 in diameter is free to rotate about the horizontal axle. A 220 mass and a 420 mass are tied to either end of a massless string, and string is hung over the pulley.
The coefficient of friction between the ladder and ground is 0.6 and the ladder makes an angle, theta with the ground equal to 50 degrees. Explain how far up the ladder can an 800N man climb before the ladder begins to slip?
An object initially at rest experiences an acceleration 1.5m/s^2 for 6.0s and then travels at the constant velocity for another 8.0s. What is the objects average velocity over the 14s interval?
A proposed space station includes living quarters in a circular ring 52.0 m in diameter. At what angular speed should the ring rotate
A ball is thrown upward at a speed v0 at anangle of 53.0° above the horizontal. It reaches a maximumheight of 8.4 m. How high would this ball go
the hypodermic syringe in the figure below contains water. the barrel of the syringe has a cross-sectional area a1
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