17. When no air resistance acts on a projectile, its horizontal acceleration is a) g. b) at right angles to g. c) centripetal. d) zero.

If the half-life of $\vert -131$ is 4.1 days, how many days would it take for only $3.2\times 10^{-2}$ grams of $\vert -131$ to be left in Mr. Miller's body if Dr. Goodie started him on an initial dose of 6.5 grams? (Round your answer to two decimal points) $\square $

What time(s) ) of day would I the gnomon cast the shortest shadow?(Select all that apply.) sunrise sunset noon midnight afternoon

Multiple Choice Question Which item would be considered the most elastic? A candy bar A cup of coffee A car

A common use of a diffraction grating is to Multiple Choice focus light onto the retina. split light into different polarizations. separate light into its separate wavelengths. reflect light into a different direction.

Do you expect the gnomon's shadow to be shorter r longer or r the same length if you I measured it 1 hour before your first marked I time? $\square $

Which of the following properties must be measured to determine the masses of stars in a typical binary system? Choose one or more: A. the radii of the two stars B. the velocities of the two stars C. the average separation between the two stars D. the period of the orbits of the two stars

What is the impact of increasing sector width on temporal resolution? Temporal resolutior decreases Temporal resolution increases There is no effect on temporal resolution Resolution is increased and multiplied by two

Which flow tube length had the greatest flow rate? A 10 mm B 20 mm C 30 mm D 40 mm E All flow tube lengths had the same flow rate.

Two bicyclists are accelerating forward at the same rate. Biker 1 has less mass than Biker 2 Which statement describes the net force on the bikers? A. The net force on Biker 1 is in the backwards direction. B. The net force on Biker 2 is greater than on Biker 1. C. The net force on both bikers is changing. D. Both bikers experience the same net force.

Geraint Thomas of Great Britain won the 2018 Tour de France. Suppose he had 140Nm of torque about the crankshaft of his bike after applying a force of 800N vertically.What is the length of Geraint's crankshaft on his racing bike? 2.52mm 112,000mm 175mm 5.71mm