Answer:
A mirror that has a reflecting surface that is recessed inward is called concave mirror
Answer:
The energy of one photon is 2.21x10⁻²⁴ J. Multiplied by 10²⁵ is 22.10 J.
Explanation:
The energy (E) of a photon is:

Where:
h: is the Planck's constant = 6.62x10⁻³⁴ J.s
λ: is the wavelength of the radiation = 8.97 cm
c: is the speed of light = 3.00x10⁸ m/s

Hence, the energy of one photon is 2.21x10⁻²⁴ J.
Now, if we multiply the answer by 10²⁵ we have:

I hope it helps you!
Answer:
75 km/s^2
Explanation:
Divide the final velocity by the time needed to reach the final velocity.
(1500 m/s) /.02s = 75,000 m/s^2 = 75 km/s^2
90% of stars in the solar system are main sequence stars.
Answer: The client must be advised while preparing a goal either for a treatment or for a fitness class.
Explanation:
The client goal must be set in a way that it should be measurable, attainable, time-bound.
The measurable goal is the in the sense that the client can measure own success.
The attainable is in the sense the client can achieve and perform all set plans in the goal.
Time-bound is in the sense that the client can devote sufficient time to obtain success.