Which of the following is an example of a lever?
a. knife
b. screw
c. nutcracker<...
Physics, 03.02.2020 11:00 heids17043
Which of the following is an example of a lever?
a. knife
b. screw
c. nutcracker
d. pencil sharpener
Answers: 2
Physics, 21.06.2019 20:20
Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2
Answers: 2
Physics, 22.06.2019 02:30
Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz
Answers: 1
Physics, 22.06.2019 10:50
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.
Answers: 1
Physics, 22.06.2019 18:00
Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly
Answers: 2
Arts, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Chemistry, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Chemistry, 13.02.2021 01:00
History, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00
Mathematics, 13.02.2021 01:00