Answer:
hello your question is incomplete below is the missing part
What is the x component of the bird’s average velocity
answer : 33.926 km/h
Explanation:
Time = 2.82 h
Distance flown by bird = 99.8 km in a direction ; 42.7 degrees east of North ( N.E )
Taking North to be the positive y direction and East to be the positive X direction
<u>Calculating the x component of the birds average velocity </u>
Distance OA = 99.8 km
X component of velocity is expressed as (Vx)= Δx / Δt
looking at triangle ABC ; Δx = (OA) sin∅
Therefore ( Vx ) = [( 99.8 )*sin(42.7°)] / 2.82
= -95.67 / 2.82 ≈ - 33.926 km/h
considering North to be positive y direction and east to be positive X direction. the x component of the velocity will be = 33.926 km/h
Answer:
Explanation:
<u>Energy Stored on a Capacitor</u>
This energy is stored in the electric field present when a voltage V is applied to a capacitor C. It can be computed by the formula
We can compute the energy by knowing the power dissipated in the flashlamp is P=8 W in a time of
Solving the first equation for C
(a) 29.8 m/s
To solve this problem, we start by analyze the vertical motion first. This is a free fall motion, so we can use the following suvat equation:
where, taking upward as positive direction:
is the final vertical velocity
is the initial vertical velocity (zero because the pebble is launched horizontally)
is the acceleration of gravity
s = -25.0 m is the displacement
Solving for vy,
(downward, so we take the negative solution)
The pebble also have a horizontal component of the velocity, which remains constant during the whole motion, so it is
So, the final speed of the pebble as it strikes the ground is
(b) 29.8 m/s
In this case, the pebble is launched straight up, so its initial vertical velocity is
So we can find the final vertical velocity using the same suvat equation as before:
(downward, so we take the negative solution)
The horizontal speed instead is zero, since the pebble is initially launched vertically, so the final speed is just equal to the magnitude of the vertical velocity:
v = 29.8 m/s
(c) 29.8 m/s
This case is similarly to the previous one: the only difference here is that the pebble is launched straight down instead than up, therefore
Using again the same suvat equation:
(downward, so we take the negative solution)
As before, the horizontal speed instead is zero, since the pebble is initially launched vertically, so the final speed is just equal to the magnitude of the vertical velocity:
v = 29.8 m/s
We notice that the final value of the speed is always the same in all the three parts, so it does not depend on the direction of launching. This is due to the law of conservation of energy: in fact, the initial mechanical energy of the pebble (kinetic+potential) is the same in all three cases (because the height h does not change, and the speed v does not change either), and the kinetic energy gained during the fall is also the same (since the pebble falls the same distance in all 3 cases), therefore the final speed must also be the same.
Answer:
The other angle is 120°.
Explanation:
Given that,
Angle = 60
Speed = 5.0
We need to calculate the range
Using formula of range
...(I)
The range for the other angle is
....(II)
Here, distance and speed are same
On comparing both range
Hence, The other angle is 120°