A 4.0m long steel, beam with a cross-sectional area of 1.0 x10-2m² and a young's modulus of
2.0 x1011 N/m2 is wedged horizontally between
two vertical walls. In order to wedge the beam,
it is compressed by 0.020mm. If the coefficient
of static friction between the beam and the walls
is 0.70 the maximum mass (including its own) it
can bear without slipping is :
(1) O
(2) 3.6kg
(3) 36kg
(4) 710kg

Describe the path of a ray that approaches a mirror parallel to the principal axis.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.