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Q1. A car carrying a 75 kg test dummy crashes into a wall at 31 m/s and is brought to rest in 0.10 s. Find the average force exerted by the seat belt on dummy.
Q2. If a car traveling at 55 km/h will skid 24 m while its brakes lock, how far will it skid if it is traveling at 130 km/h when its brakes lock?
Q3. What is the current in amperes in the wire of radius R = 2.91 mm if the magnitude of the current density is given by (a) Ja =J0r/R and (b) Jb = J0(1 - r/R) in which r is the radial distance and J0 = 5.88 x 104 A/m2?
How much time is necessary for the torso to come to rest
A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.
W hat is the velocity of the gasoline in the tube
A person whose eyes are H = 1.64 m above the floor stands L = 2.3 m in front of a vertical plane mirror whose bottom edge is 38 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point o..
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
What is speed of the wind what is coefficient of static friction
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
Eight identical, non-interacting particles are placed in a cubical box of sides L = 0.2 nm. Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states if (a) particles are electrons and (b) particles..
Find an expression for work done by the gas
Compute the magnetic flux
While a force of 6.0 N is applied, pulling the spring to the right, the elongation of the spring is 0.030m from its equilibrium position. What is the force constant of the spring
What is magnitude of the breaking force
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