Answer:
Explanation:
Given:
the displacement as the function of time:
here time is in seconds and the displacement in meters.
Now we differentiate this eq. of displacement to get the equation of velocity:
According to given the velocity is 
at some time:
& is the only time for (t>=0) instances when the particle will have a velocity of but in the opposite direction.
Answer:
Explanation:
Initial velocity u = V₀ in upward direction so it will be negative
u = - V₀
Displacement s = H . It is downwards so it will be positive
Acceleration = g ( positive as it is also downwards )
Using the formula
v² = u² + 2 g s
v² = (- V₀ )² + 2 g H
= V₀² + 2 g H .
v = √ ( V₀² + 2 g H )
Okay, I am going to use solar prominence and solar flares.
So, Solar Prominence is a large, bright, gaseous feature extending outward from
the Sun's surface, often in a loop shape. Prominence are anchored to
the Sun's surface in the photo-sphere, and extend outwards into the Sun's
corona.
A solar flare is a sudden flash of brightness observed near the Sun's
surface. It involves a very broad spectrum of emissions, requiring an
energy release of up to 6 × 10²⁵ joules of energy (roughly the
equivalent of 160,000,000,000 megatons of TNT, over 25,000 times more
energy than released from the impact of Comet Shoemaker–Levy 9 with
Jupiter).
Hope this helps
The object does not move.
Explanation:
Power is current times voltage.
P = IV
And from Ohm's law, voltage is current times resistance.
V = IR
So if we solve for I in Ohm's law and substitute into the power equation:
I = V/R
P = (V/R) V
P = V² / R
Given that P = 7 W and V = 7 V:
7 = 7² / R
R = 7 Ω
Make sure you copied the problem correctly. If you did, the answer key may be wrong.
