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
velikii [3]
3 years ago
9

How much physical activity do adults need?

Physics
2 answers:
serg [7]3 years ago
8 0
30? Physical activity
frutty [35]3 years ago
8 0
Aerobic activity. Get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity.
You might be interested in
What is amplitude?
nydimaria [60]
1. Frequency  is the number of complete waves that pass a point in a second.   2.Wavelength is the distance between two crests or two troughs.                     3.Time period <span> is the time it takes for one complete wave to pass a given point. 4. Amplitude is the height of the wave.   Hence option 4 is correct. </span>
8 0
3 years ago
Danny lowers the sails on his boat. He paddles upstream at 19 km/hr. The current is still running downstream at 15 km/hr. What i
Molodets [167]

Answer:

4 km/hr

Explanation:

The computation of the actual velocity is shown below:

Because the path of its paddles is opposed to the current direction, the real velocity can be determined by deducting the current velocity to its velocity while paddling

So, the actual velocity is

= Upstream - downstream

= 19 km/hr - 15 km/hr

= 4 km/hr

As we can see it is in positive, so it is an upstream direction  

3 0
3 years ago
What would happen if you place 2 Plane Mirrors parallel to each other?
e-lub [12.9K]

Answer:

No image will be observed.

Explanation:

Images that are created by mirrors are virtual images. This virtual image can only be seen by an observer. In this case, an infinite number of images or no image will be created here as both will be reflecting their own images. Light will continuously bounce back and forth reflecting the same image.

6 0
3 years ago
A copper bar of length h and electric resistance r slides with negligible friction on metal rails that have negligible electric
Elanso [62]
I think math is the best idea
3 0
3 years ago
Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm?
saw5 [17]
<span>Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. To find the mass of the substance, we need to multiply the volume occupied by the substance.

Mass = Density x Volume
Mass = 7.9 g/cm^3 (5.5 cm)^3
Mass = 43.45 g </span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • The time a basketball player spends in the air when shooting a basket is called the​ "hang time." the vertical leap l measured i
    7·1 answer
  • . Two people are pushing a car of mass 2000 kg.
    15·1 answer
  • What will happen to plant height if the amount of available light is reduced due to global dimming?
    8·1 answer
  • What causes a substance to change states of matter?
    7·1 answer
  • What is the meaning of the saying "the power of a lens is 1 dioptre "​
    11·1 answer
  • Who wants to be freinds
    14·2 answers
  • PLEASE help!!
    12·1 answer
  • Which lighting source has lower energy costs and a longer life but can be dangerous?
    14·1 answer
  • Friction always acts____ and in the ____ direction of the motion of an object ​
    9·1 answer
  • A 0.22 caliber handgun fires a 1.9g bullet at a velocity of 765m/s. Calculate the de Broglie wavelength of the bullet. Is the wa
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!