Physics, 03.07.2020 23:01, boportsmouth7908
In a crash test, a car of mass 1.41×10^3 kg collides with a wall and rebounds. The initial and final velocities of the car are vi=−15.4 m/s and vf=2.87 m/s, respectively. If the collision lasts for 0.154 s, find the following.
a. The impulse delivered to the car due to the collision.
b. The size and direction of the average force exerted on the car (Indicate the direction with the sign of your answer.)
c. Suppose the car doesn't rebound off the wall, but the time interval of the collision remains at 0.158 s. In this case, the final velocity of the car is zero. Find the average force exerted on the car. (Indicate the direction with the sign of your answer.)
Answers: 2
Physics, 22.06.2019 10:10, sadie960
Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.
Answers: 1
Physics, 22.06.2019 20:20, Webber07
An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states
Answers: 1
In a crash test, a car of mass 1.41×10^3 kg collides with a wall and rebounds. The initial and final...
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