Q: A helicopter is ascending vertically with a speed of 2.00 m/s. At a height of 160 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
Attempt:
[how long it takes to reach the height]
v=delta d/time
2=160/time...
Q: How long does it take a car to cross a 30 m-wide intersection after the light turns green, if it accelerates from rest at a constant 2.00 m/s^2?
Attempt: V=V0 + at; x-x0/t=v0+at; x-x0=v0+at^2; x=v0+x0+at^2; 30=0+0+2t^2; 15=t^2.
The square root of 15 ended up being my final answer, when...
Q1: What is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 3.85 plus or minus 0.06 m?
I found the volume of the original sphere, as well as one with a radius of 3.91. I then subtracted the volumes to find the difference between the two, divided that by the...
i'm working on a packet that i need to finish immediately! quick responses would be appreciated! my question involves simplifying circuit problems. a complex circuit is shown, and it asks what the total resistance of the circuit is. i assumed that each wire coming from the junction represented...
I've come across a booklet on understanding electricity, and it's been very interesting, but I've hit a rut! The packet says that the sum of the voltage drops of resistors equals the source voltage. How is that possible? Were the voltage to continuously drop, wouldn't no voltage exist at all...