1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rufina [12.5K]
3 years ago
7

Which of the following is not a benefit of improved cardio-respiratory fitness?

Physics
1 answer:
givi [52]3 years ago
8 0

I wanna say it’s D. Slower post exercise recovery time.

You might be interested in
What planet are people working on so they can move there
Nata [24]

Answer:

mars

Explanation:

just search it up

8 0
3 years ago
Read 2 more answers
The Back Saver Sit and Reach from the Fitnessgram measure this fitness component.
MAVERICK [17]
The correc answer is B.
7 0
3 years ago
The maximum wavelength For photoelectric emissions in tungsten is 230 nm. What wavelength of light must be use in order for elec
notka56 [123]

Answer:

λ = 1.8 x 10⁻⁷ m = 180 nm

Explanation:

First we find the work function of tungsten by using the following formula:

∅ = hc/λmax

where,

∅ = work function = ?

h = Plank's Constant = 6.626 x 10⁻³⁴ J.s

c = speed of light = 3 x 10⁸ m/s

λmax = maximum wavelength for photoelectric emission = 230 nm

λmax = 2.3 x 10⁻⁷ m

Therefore,

∅ = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(2.3 x 10⁻⁷ m)

∅ = 8.64 x 10⁻¹⁹ J

Now we convert Kinetic Energy of electron into Joules:

K.E = (1.5 eV)(1.6 x 10⁻¹⁹ J/1 eV)

K.E = 2.4 x 10⁻¹⁹ J

Now, we use Einstein's Photoelectric Equation:

Energy of Photon = ∅ + K.E

Therefore,

Energy of Photon = 8.64 x 10⁻¹⁹ J + 2.4 x 10⁻¹⁹ J

Energy of Photon = 11.04 x 10⁻¹⁹ J

but,

Energy of Photon = hc/λ

where,

λ = wavelength of light = ?

Therefore,

11.04 x 10⁻¹⁹ J = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/λ

λ = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(11.04 x 10⁻¹⁹ J)

<u>λ = 1.8 x 10⁻⁷ m = 180 nm</u>

5 0
2 years ago
What do understand by the efficiency of a machine? By using a block and tackel a man can raise a load of 720 N by an effort of 1
motikmotik

Answer:

Efficiency of a machine is how well the machine works and what the machine is capable of doing.

Mechanical advantage=Load/Effort.

720/180=4

6 0
3 years ago
A. If an electron in a hydrogen atom has an energy of −6.06 × 10^−20 J, which Bohr orbit is it in?
Orlov [11]

Explanation:

yea because cheese and jdouchvehdjdjdbsjjs d d d d d d d d d d djxjxjx s djxbsbs zjxh d d d

3 0
3 years ago
Other questions:
  • What is a shock wave and when is it produced
    12·1 answer
  • If we observe a star over 6 months and obtain a parallax angle (p) for the star, how can we calculate the distance to the star?
    12·2 answers
  • At a certain instant a rigid wheel is spinning about its center of mass with angular velocity of magnitude ω and angular acceler
    6·1 answer
  • If you have 500 g of water at 25oc and wish to heat it to 74o c, what is the specific heat of water
    14·1 answer
  • You drop a rock off the top of a building. It takes 4.5 s to hit the ground. How tall is
    6·1 answer
  • A shuttle changed velocity from 5.0 km/s to 11.9 km/s in 0.5 seconds. What is the acceleration of
    12·1 answer
  • A colored filter placed in front of a spotlight or floodlight to give the light beam a specific hue is called a:
    15·1 answer
  • A tennis racket hits a tennis ball with a force of F=at−bt2, where a = 1200 N/ms , b = 370 N/ms2 , and t is the time (in millise
    5·1 answer
  • Help fast I want the correct answer please does spectral diffusion cause light to scatter ​
    5·1 answer
  • When in orbit, astronauts experience weightlessness. What is this caused by?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!