Answer this please. thanks in advance!! please tel me a christma
2 answers:
Presuming that this tree is connected into a mains power source in the UK. The total output of the UK mains source is 230V. So if we share this voltage equally between 50 bulbs:
I'm not 100 per cent sure this is correct though and different countries may have different mains power supplies. Hope it helps anyway.
EDIT: This also does not take into account resistance in the bulbs and wires but is all I can tell you from the information provided in the question.
I'm not 100 per cent sure this is correct though and different countries may have different mains power supplies. Hope it helps anyway.
EDIT: This also does not take into account resistance in the bulbs and wires but is all I can tell you from the information provided in the question.
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Answer:
t = √2y/g
Explanation:
This is a projectile launch exercise
a) The vertical velocity in the initial instants ( = 0) zero, so let's use the equation
y = t -1/2 g t²
y= - ½ g t²
t = √2y/g
b) Let's use this time and the horizontal displacement equation, because the constant horizontal velocity
x = vox t
x = v₀ₓ √2y/g
c) Speeds before touching the ground
vₓ = vox = constant
=
- gt
= 0 - g √2y/g
= - √2gy
tan θ = Vy / vx
θ = tan⁻¹ (vy / vx)
θ = tan⁻¹ (√2gy / vox)
d) The projectile is higher than the cliff because it is a horizontal launch
Answer:
Tension on tendon = 1669800N
Explanation:
Detailed explanation and calculation is shown in the image below
