Answer:
the highest point the rocket reaches is
Explanation:
Hi
First of all we are going to use while the engine is on, so .
Second, we're going to find the speed as the engine shuts off, so we have
Third, we need the time when the rocket reaches max high after engine turns off, to do that we use , then we isolate t,
Finally we can find highest point by using
Answer:
V = 156.13 [cm³]
Explanation:
El volumen de un solido con forma de paralepipedo se puede calcular por medio de la siguiente formula:
donde:
V = volumen [cm³]
ancho = 3.4 [cm]
largo = 11.2 [cm]
alto = 4.1 [cm]
Ahora reemplazando.
Answer:
A certain battery can power a 100 Ohm-resistance device for 4 hours. How long can the battery power a 200 Ohm device? Ans: 8 ohms
Part B)
If you put two of these batteries in series with each other - still powering a device with the original 100 Ohm resistance - how long would the batteries last? (Note: you have two batteries now, so twice the energy to begin with than with one battery.)
t₁=8hr
t₂=2hr
Explanation:
Given that,
R₁ =100Ω
R₂ =200Ω
t₁ =4hr
Part A
The expression for energy dessipated across a resistor when it is connected with a single resistor (R) is
Here V is the voltage across the source, t is time
energy dissipated across 200ohms is the same as energy dissipated across 100ohms
rearrange the above equation t₂
Part b
Now two batteries are in series
total emf =2V
use the equation below
Answer: 0.081 kilogram/cubic meter
Explanation: p=m/v so 104/1278 is 0.081377151799687 or 0.081.
Answer:
Explanation:
The velocity of plane relative to earth is given by:
As the from given data.The velocity of plane relative to air is:
According to relative motion of velocity of the air relative to earth given by:
The magnitude is given as: