Answer:
1 angstrom equals 0.1 nm.
To convert 5000 angstroms: 5000 angstrom = 5000 / 1 × 0.1 nm.
= 500 nm
To express 5000 angstroms in meters: 5000 angstrom = 5000 × 1 × 10^-10.
= 5 × 10^-7 m
Hope this explanation is useful for you.
A 100 W incandescent lightbulb emits about 5 W of visible light. (The other 95 W are emitted as infrared radiation or lost as he
1 answer:
Answer:
n = 1.89 x 10¹⁹ photons per second.
Explanation:
Given values:
Power of the bulb = 100 W
Visible light output = 5 W
Wavelength of visible light = 600 nm
Calculating the number of photons emitted each second:
Using the wavelength formula:
Photon energy:
U = h υ
U = 6.63 x 10⁻³⁴ × 4 x 10¹⁴
U = 2.65 x 10⁻¹⁹ J
Determining the number of photons:
n = 1.89 x 10¹⁹ photons/s.
You might be interested in
Answer:
The duration, t = 3.53 seconds
Explanation:
The following information is provided:
The equation to calculate the time t is expressed as:
...... (1)
Where
s denotes the distance in feet
We are to determine the duration taken by the stone to fall a distance of 200 feet, where s = 200 feet
Substituting the value of s into equation (1) yields:
t = 3.53 seconds
Thus, the time taken by the object is 3.53 seconds, which provides the required answer.
Answer:
Speeds of 1.83 m/s and 6.83 m/s
Explanation:
Based on the law of conservation of momentum,
where m represents mass,
is the initial speed before impact,
and
are the velocities of the impacted object after the collision and of the originally stationary object after the impact.
Thus,
After the collision, the kinetic energy doubles, therefore:
Substituting the initial velocity of 5 m/s provides the equation needed to proceed.
We know that
leads to
Using the quadratic formula leads us to solve for the speeds after the explosion, specifically where a=2, b=-10, and c=-25.
By substituting the values, the solution yields results for the speeds of the blocks, which are ultimately 1.83 m/s and 6.83 m/s.
Answer:
v = 66.4 m/s
Explanation:
We know that the aircraft starts off moving at a speed of
now we have
in the Y direction, we can apply kinematic equations
as there is no acceleration along the x-axis, the velocity in this direction remains unchanged
thus yielding