If there's no air resistance, then the diver keeps moving horizontally at 40 m/s, even after s/he jumps out of a perfectly good airplane.
Also, gravity ADDS 9.8 m/s of downward speed for every second the diver falls.
One second after leaving the airplane, the diver is moving horizontally at 40 m/s, and moving vertically downward at 9.8 m/s .
The question asks for the "downward velocity". That's 9.8 m/s .
The diver's TOTAL velocity is
√ (40² + 9.8²)
= √ (1,600 m²/s² + 96.04 m²/s²)
= √ (1,696.04 m²/s²)
= 41.2 m/s in some direction between
straight forward and straight down.
Answer:
Look at the attachment to see the work. It should be attached right below this, but if it's not, please let me know.
Explanation:
(I've never attached anything before so I'd like to know if it worked)
Answer:
162.8 K
Explanation:
initial current = io
final current, i = io/8
Let the potential difference is V.
coefficient of resistivity, α = 43 x 10^-3 /K
Let the resistance is R and the final resistance is Ro.
The resistance varies with temperature
R = Ro ( 1 + α ΔT)
V/i = V/io (1 + α ΔT )
8 = 1 + 43 x 10^-3 x ΔT
7 = 43 x 10^-3 x ΔT
ΔT = 162.8 K
Thus, the rise in temperature is 162.8 K.
Answer:work is force times distance
Explanation:to create a force u need energy and the greater the energy the greater the force is applied to an object.
