Answer:
a) t=0.9935s
b) d = 6.95m
c) Hmax=2.1m
d) Vf = (9.009,-6.48) m/s
Explanation:
First of all, the we calculate the components of the initial velocity:
For the time of the jump:
Solving the quadratic equation for t, we get:
t = 0.9935s
For the distance of her impact, we will need the time we just calculated:
To know the maximum height:
Using this value, we calculate the maximum height:
Finally, for the final velocity, we use the time of the jump t=0.9935s:
Voltage = (current) x (resistance) (Ohm's law)
Voltage = (15 A) x (18 ohms)
<em>Voltage = 270 volts</em>
Answer:
0.0483m or 48.3 mm
Explanation:
Let g = 10m/s2
At 8m, the pile has a potential energy of
P = mgh = 3000*10*8 = 240000 J
This energy is converted to kinetic energy once the pile drops down to the bottom:
Taking gravity into consideration, the net force acting on the pile once it hits the ground is
Therefore the net deceleration is:
We can find out how far it's driven into the ground with the following equation of motion:
where v = 0 is the final velocity, which is 0 because it stops, is the initial velocity when it hits the ground, a is the deceleration, and s is the distance it travels into the ground
or 48.3 mm
Answer:
A
Explanation:
A lunar eclipse occurs when the Moon enters the Earth's shadow. A solar eclipse occurs when the Moon's shadow falls on the Earth. They do not happen every month because the Earth's orbit around the sun is not in the same plane as the Moon's orbit around the Earth.
Cloud formation is a process which various types of clouds are formed, generally involving adiabatic cooling of ascending moist air.