Answer: True
Explanation: Light enters your eye through the lens which then hits the retina which is located in the back of your eye.
The initial velocity used by the flea to jump straight upward is 3.1 m/s
<h3>Data obtained from the question</h3>
The following data were obtained from the question:
- Acceleration due to gravity (g) = 9.8 m/s²
- Maximum height (h) = 0.49 m
- Final velocity (v) = 0 m/s (at maximum height)
- Initial velocity (u) =?
<h3>How to determine the initial velocity</h3>
The initial velocity used by the flea to jump upward can be obtained as follow:
v² = u² – 2gh (since the ball is going against gravity)
0² = u² – (2 × 9.8 × 0.49)
0 = u² – 9.604
Collect like terms
u² = 0 + 9.604
u² = 9.604
Take the square root of both sides
u = √9.604
u = 3.1 m/s
Thus, the initial velocity is 3.1 m/s
Learn more about motion under gravity:
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Answer:
de Broglie wavelength of the bullet is 3.093 x 10⁻³⁵ m
Explanation:
Given;
mass of bullet, m = 28 g = 0.028 kg
velocity of the bullet, v = 765 m/s
de Broglie wavelength of the bullet is given by;
λ = h / mv
where;
λ is de Broglie wavelength of the bullet
h is Planck's constant = 6.626 x 10⁻³⁴ J/s
λ = h / mv
λ = (6.626 x 10⁻³⁴ ) / (0.028 x 765)
λ = 3.093 x 10⁻³⁵ m
Therefore, de Broglie wavelength of the bullet is 3.093 x 10⁻³⁵ m
The space between them is shrinking at (60+40)= 100 mph. It started out being 120 miles. To shrink to zero will take
(120 miles) / (100 mph) = 1.2 hours
That's 1 hour and 12 minutes.
Answer:
r = 2.55 m
Explanation:
Given that,
First charge, q₁ = 32.2 μC
Second charge, q₂ = + 12.3 μC
The force between charges, F = 0.544 N
We need to find the distance between charges. The force between two charges is given by the formula as follows :
So, the charges are 2.55 m apart.
