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Brain injuries generally occur any time the brain's acceleration reaches 100 g for even a short time. Consider a car running into a solid barrier. With an airbag, the driver's head moves through a distance of 20 cmwhile the airbag stops it. Without an airbag, the head continues forward until the seatbelt stops the torso, causing the head to stop in a distance of only 5.0 cm.
Part A Find the maximum speed with which the car can strike the barrier without causing brain injury, using an airbag.
Part B Find the maximum speed with which the car can strike the barrier without causing brain injury, without using an airbag.
iron atoms have been detected in the sun's outer atmosphere, some with many of their electrons stripped away. What is the net electric charge(in coulombs) of an iron atom with 26 protons and 7 electrons? Be sure to include the algebraic sign (+ or..
The amount of internal enrgy needed to raise temperature of .25kg of water by .2 degreesCis 209.3J. How fast must a .25kg baseball travel in order for its kinetic energy to equal this internal energy.
what is the maximum amount the spring may be stretched and the box remain at rest.
Ina mass spectrometer, ions are directed into a magnetic field, where they curve around in the field and strike a detector. If several singly ionized atoms travel at the equal speed through the magnetic field, would you expect them all to be defle..
In making raspberry jelly, 887 g of raspberry juice is combined with 930 g of sugar. The mixture starts at room temperature, 23.0°C, and is slowly heated on a stove until it reaches 220°F, How much energy does the mixture absorb
What is the size of the frictional force acting on the car
What is the average induced emf in the coil in mV. If he is crossing a river where the current is 1.60 km/h, in what direction should his boat be headed if he wants to reach the point directly opposite his starting point.
W hat is the ratio of an amplitude of the damped oscillations
Mary needs to row her boat across a 100-{rm m}-wide river that is flowing to the east at a speed of 1- {rm m/s}. Mary can row the boat with a speed of 2- {rm m/s} relative to the water.
Which color has the highest index of refraction
A space station, in the form of a wheel 184 m in diameter, rotates to provide an "artificial gravity" of 7.40 m/s2 for persons who walk around on the outer rim. Find the rotational frequency of wheel (in revolutions per minute) that will produce t..
When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find out the maximum height H to which she rises above the end of the track.
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